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Filatova SA, Kamynin VA, Gladush YG, Krasnikov DV, Nasibulin AG, Tsvetkov VB. Dumbbell-Shaped Ho-Doped Fiber Laser Mode-Locked by Polymer-Free Single-Walled Carbon Nanotubes Saturable Absorber. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101581. [PMID: 37241998 DOI: 10.3390/nano13101581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023]
Abstract
We propose a simple dumbbell-shaped scheme of a Holmium-doped fiber laser incorporating a minimum number of optical elements. Mode-locking regimes were realized with the help of polymer-free single-walled carbon nanotubes (SWCNTs) synthesized using an aerosol (floating catalyst) CVD method. We show that such a laser scheme is structurally simple and more efficient than a conventional one using a ring cavity and a similar set of optical elements. In addition, we investigated the effect of SWCNT film transmittance, defined by the number of 40 nm SWCNT layers on the laser's performance: operating regimes, stability, and self-starting. We found that three SWCNT layers with an initial transmittance of about 40% allow stable self-starting soliton mode-locking at a wavelength of 2076 nm with a single pulse energy of 0.6 nJ and a signal-to-noise ratio of more than 60 dB to be achieved.
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Affiliation(s)
- Serafima A Filatova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., 119991 Moscow, Russia
| | - Vladimir A Kamynin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., 119991 Moscow, Russia
| | - Yuriy G Gladush
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel Str., 121205 Moscow, Russia
| | - Dmitry V Krasnikov
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel Str., 121205 Moscow, Russia
| | - Albert G Nasibulin
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel Str., 121205 Moscow, Russia
| | - Vladimir B Tsvetkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., 119991 Moscow, Russia
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2
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Jin L, Zhang Q, Zhang B, Gao Z, Yang S, Li L. Numerical analysis of hybrid mode-locking stability in a Ho-doped fiber laser. OPTICS EXPRESS 2023; 31:1141-1153. [PMID: 36785155 DOI: 10.1364/oe.478860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 12/05/2022] [Indexed: 06/18/2023]
Abstract
We numerically study a hybrid mode-locked holmium-doped fiber laser based on the coupled nonlinear Schrödinger equations, by introducing nonlinear polarization rotation and saturable absorber in a same cavity. Maps of mode-locking states related to the intracavity wave-plates are created to evaluate the stability of mode-locking. Nonlinear polarization rotation imposes negative effect of linear absorption and even reverse saturable absorption to the pulses in the hybrid cavity. Saturable absorber compensates the negative effect from nonlinear polarization rotation, then consequently contributes to the stability of single-pulse mode-locking states. The extension of pulse time duration indicates the dynamic synergy between nonlinear polarization rotation and saturable absorber rather than the static combination mechanism of them.
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3
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Ahmad H, Azri MFM, Ramli R, Samion MZ, Yusoff N, Lim KS. 2 μm passively mode-locked thulium-doped fiber lasers with Ta 2AlC-deposited tapered and side-polished fibers. Sci Rep 2021; 11:21278. [PMID: 34711908 PMCID: PMC8553755 DOI: 10.1038/s41598-021-99928-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 10/05/2021] [Indexed: 11/30/2022] Open
Abstract
In this work, mode-locked thulium-doped fiber lasers operating in the 2 µm wavelength region were demonstrated using tantalum aluminum carbide (Ta2AlC)-based saturable absorbers (SAs) utilizing the evanescent wave interaction. The Ta2AlC MAX Phase was prepared by dissolving the Ta2AlC powder in isopropyl alcohol and then deposited onto three different evanescent field-based devices, which were the tapered fiber, side-polished fiber, and arc-shaped fiber. Flame-brushing and wheel-polishing techniques were used to fabricate the tapered and arc-shaped fibers, respectively, while the side-polished fiber was purchased commercially. All three SA devices generated stable mode-locked pulses at center wavelengths of 1937, 1931, and 1929 nm for the tapered, side-polished, and arc-shaped fibers. The frequency of the mode-locked pulses was 10.73 MHz for the tapered fiber, 9.58 MHz for the side-polished fiber, and 10.16 MHz for the arc-shaped fiber. The measured pulse widths were 1.678, 1.734, and 1.817 ps for each of the three SA devices. The long-term stability of the mode-locked lasers was tested for each configuration over a 2-h duration. The lasers also showed little to no fluctuations in the center wavelengths and the peak optical intensities, demonstrating a reliable, ultrafast laser system.
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Affiliation(s)
- H Ahmad
- Photonics Research Centre, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
- Department of Physics, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - M F M Azri
- Photonics Research Centre, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - R Ramli
- Photonics Research Centre, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - M Z Samion
- Photonics Research Centre, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - N Yusoff
- Photonics Research Centre, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - K S Lim
- Photonics Research Centre, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
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Todorov F, Aubrecht J, Peterka P, Schreiber O, Jasim AA, Mrázek J, Podrazký O, Kamrádek M, Kanagaraj N, Grábner M, Baravets Y, Cajzl J, Koška P, Fišar A, Kašík I, Honzátko P. Active Optical Fibers and Components for Fiber Lasers Emitting in the 2-μm Spectral Range. MATERIALS 2020; 13:ma13225177. [PMID: 33212802 PMCID: PMC7696405 DOI: 10.3390/ma13225177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/07/2020] [Accepted: 11/12/2020] [Indexed: 01/26/2023]
Abstract
Laser sources emitting in the infrared range at around 2 µm are attracting great interest for a variety of applications like processing of transparent thermoplastic polymers in industry as well as plenty of applications in medicine, spectroscopy, gas sensing, nonlinear frequency conversion to the mid-infrared, to mention a few. Of late, fiber lasers compared to other kinds of lasers benefit from their all-fiber design, leading to a compact, robust, and well thermally manageable device. Particularly, thulium- and holmium-doped fiber lasers are the first choice in fiber lasers emitting light around 2 µm. In this paper, we give an overview of our recent results in the research on thulium- and holmium-doped optical fibers, fiber lasers, and related research topics in the 2-µm spectral range. In particular, we present, to our knowledge, the first results of improvement of pump absorption in double-clad fibers thanks to the fiber twist frozen during drawing. Finally, a brief demonstration of material processing by thulium all-fiber laser operating at 2 µm is presented.
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Affiliation(s)
- Filip Todorov
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
- Correspondence:
| | - Jan Aubrecht
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Pavel Peterka
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Ondřej Schreiber
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
| | - Ali A. Jasim
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Jan Mrázek
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Ondřej Podrazký
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Michal Kamrádek
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Nithyanandan Kanagaraj
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
- Optoelectronic Research Center, University of Southampton, Southampton, Hampshire SO17 1BJ, UK
| | - Martin Grábner
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Yauhen Baravets
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Jakub Cajzl
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Pavel Koška
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Adam Fišar
- SQS Vláknová Optika, a.s., 509 01 Nova Paka, Czech Republic;
| | - Ivan Kašík
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
| | - Pavel Honzátko
- Institute of Photonics and Electronics of the Czech Academy of Sciences, Chaberská 57, 182 51 Prague, Czech Republic; (J.A.); (P.P.); (O.S.); (A.A.J.); (J.M.); (O.P.); (M.K.); (N.K.); (M.G.); (Y.B.); (J.C.); (P.K.); (I.K.); (P.H.)
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5
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Yang C, Yao B, Chen Y, Liu G, Mi S, Yang K, Dai T, Duan X. 570 MHz harmonic mode-locking in an all polarization-maintaining Ho-doped fiber laser. OPTICS EXPRESS 2020; 28:33028-33034. [PMID: 33114972 DOI: 10.1364/oe.403518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
In this paper, we demonstrate a 570.0 MHz harmonically mode-locked all-polarization-maintaining Ho-doped fiber laser based on semiconductor saturable absorbed mirror. Firstly, the laser operates in the 15.4 MHz fundamental mode-locked soliton regime, emitting 2051.5 nm, 1.62 ps soliton pulse without Kelly sidebands. And then, the stable 37th-order harmonic mode-locked soliton with maximum repetition rate up to 570.0 MHz at 2053nm is generated. Moreover, colorful soliton rain behaviors are also discussed.
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6
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Shu Y, Guo J, Fan T, Xu Y, Guo P, Wang Z, Wu L, Ge Y, Lin Z, Ma D, Wei S, Li J, Zhang H, Chen W. Two-Dimensional Black Arsenic Phosphorus for Ultrafast Photonics in Near- and Mid-Infrared Regimes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:46509-46518. [PMID: 32940461 DOI: 10.1021/acsami.0c12408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Black arsenic phosphorus (b-AsP), as one kind of novel two-dimensional (2D) materials, bridges the band gap between black phosphorus and graphene. Thanks to its great advantages, including high carrier mobility, excellent in-plane anisotropy, and broad tunability band gap, b-AsP has aroused great interest in fields of photonics and photoelectronics. In this paper, ultrathin 2D b-AsP nanomaterials were fabricated by the liquid-phase exfoliation method, and their strong broadband linear and nonlinear absorptions were characterized by ultraviolet-visible-infrared and Z-scan technology. The experimental determination of the nonlinear absorption coefficient and low saturation intensity of b-AsP were -0.23 cm/GW and 3.336 GW/cm2, respectively. Based on density functional theory, the partial charge density and band structure at the conduction band minimum and valence band maximum were calculated, which further proves the excellent optical properties of 2D b-AsP. By first using 2D b-AsP as a novel saturable absorber in both erbium-doped and thulium-doped fiber lasers, mode-locked soliton pulses can stably operate at 1.5 and 2 μm. The laser pulses generated by 2D b-AsP possess higher stability to resist self-splitting than those generated by other 2D material-based mode-lockers. These experimental results highlight that 2D b-AsP has great application potential as a novel optical material in ultrafast photonics from near- to mid-infrared regimes.
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Affiliation(s)
- Yiqing Shu
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
- Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, PR China
| | - Jia Guo
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Taojian Fan
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Yijun Xu
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Penglai Guo
- Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, PR China
| | - Zhenhong Wang
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Leiming Wu
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
- Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, PR China
| | - Yanqi Ge
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Zhitao Lin
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
- Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, PR China
| | - Dingtao Ma
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
- Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, PR China
| | - Songrui Wei
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Jianqing Li
- Faculty of Information Technology, Macau University of Science and Technology, Macao 519020, PR China
| | - Han Zhang
- Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen 518060, PR China
| | - Weicheng Chen
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China
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Wang J, Han J, He J, Liao C, Wang Y. High-energy mode-locked holmium-doped fiber laser operating in noise-like pulse regime. OPTICS LETTERS 2019; 44:4491-4494. [PMID: 31517914 DOI: 10.1364/ol.44.004491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
An all-fiber mode-locked holmium-doped fiber laser operating in the noise-like pulse regime is reported. Employing a nonlinear amplifying loop mirror as the artificial saturable absorber, the laser generates pulses with energy up to 280 nJ, which is, to the best of our knowledge, the highest pulse energy ever achieved from mode-locked holmium-doped fiber lasers. We also discover a peculiar mode-locking operation mode using the laser. The peculiar mode falls into the category of a noise-like pulse, while it possesses a number of unique features (strong spikes in the optical spectrum, high temporal coherence, and chair-like pulse profile) that are not observed in previous research works regarding noise-like pulse lasers.
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8
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Rahman MFA, Reddy PH, Paul MC, Das S, Dhar A, Baharom MF, Latiff AA, Rusdi MFM, Wang P, Dimyati K, Harun SW. Titanium dioxide fiber saturable absorber for Q-switched fiber laser generation in the 1-micrometer region. APPLIED OPTICS 2019; 58:3495-3500. [PMID: 31044848 DOI: 10.1364/ao.58.003495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/24/2019] [Indexed: 06/09/2023]
Abstract
A passively Q-switched ytterbium-doped fiber laser (YDFL) operating at 1062 nm was demonstrated by using a segment of 20 cm titanium dioxide-doped fiber saturable absorber (TiO2DF SA). The Q-switched YDFL emerged stably with tunable repetition rates ranging from 32 kHz to 53 kHz as the pump power rose from 109 mW to 233 mW. Within this range of pump power, a maximum output power of 10.1 mW, maximum peak power of 75 mW, and maximum pulse energy of 191 nJ were obtained. The narrowest pulse width of 2.55 μs was attained at the maximum pump power of 233 mW, while the signal-to-noise ratio of the fundamental frequency was 47 dB. This demonstration reveals that the proposed TiO2DF SA is feasible for constructing a flexible and reliably stable Q-switched pulsed fiber laser in the 1-micrometer region.
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9
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Pawliszewska M, Dużyńska A, Zdrojek M, Sotor J. Metallic carbon nanotube-based saturable absorbers for holmium-doped fiber lasers. OPTICS EXPRESS 2019; 27:11361-11369. [PMID: 31052981 DOI: 10.1364/oe.27.011361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
In 2003, carbon nanotubes opened a new field of research on nanomaterial-based mode-locked fiber lasers. They maintain popularity in the ultrafast laser community due to their broadband operation, relatively high damage threshold, and tunable optical properties. Here we show that metallic carbon nanotube-based thin film fabricated by vacuum filtration technique can be used as a saturable absorber in holmium-doped fiber laser operating in anomalous and normal dispersion regimes. Scaling the absorbers modulation depth by adjusting the film thickness was observed. The Fourier transform limited 6.65 nm wide optical solitons in anomalous dispersion regime were generated. Utilizing stretched-pulse regime greatly improves the laser performance - 212 fs pulses reach the energy of 3.79 nJ.
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10
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Wang M, Zhang H, Wei R, Zhu Z, Ruan S, Yan P, Wang J, Hasan T, Sun Z. 172 fs, 24.3 kW peak power pulse generation from a Ho-doped fiber laser system. OPTICS LETTERS 2018; 43:4619-4622. [PMID: 30272697 DOI: 10.1364/ol.43.004619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 07/21/2018] [Indexed: 06/08/2023]
Abstract
We demonstrate a high-peak-power femtosecond fiber laser system based on single-mode holmium (Ho)-doped fibers. 833 fs, 27.7 MHz pulses at 2083.4 nm generated in a passively mode-locked Ho fiber laser are amplified and compressed to near transform-limited 172 fs, 7.2 nJ pulses with 24.3 kW peak power. We achieve this performance level by using the soliton effect and high-order soliton compression. To the best of our knowledge, this is the first demonstration of sub-200 fs pulses, with peak power exceeding 10 kW from a Ho-doped single-mode fiber laser system without using bulk optics compressors.
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11
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Pawliszewska M, Martynkien T, Przewłoka A, Sotor J. Dispersion-managed Ho-doped fiber laser mode-locked with a graphene saturable absorber. OPTICS LETTERS 2018; 43:38-41. [PMID: 29328191 DOI: 10.1364/ol.43.000038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 11/25/2017] [Indexed: 06/07/2023]
Abstract
In this Letter, we demonstrate an all-fiber holmium-doped laser operating in the stretched-pulse regime. As a result of dispersion management, the laser is capable of generating 190 fs pulses with a bandwidth of 53.6 nm. The pulses centered at 2060 nm reach 2.55 nJ of energy. Mode-locking is achieved with a multilayer graphene saturable absorber (SA). The Letter also presents the measurement of group velocity dispersion of active (Nufern SM-HDF-10/130), passive (SMF28), and dispersion-compensating (Nufern UHNA4) fibers in a 1.8-2.1 μm range. To the best of our knowledge, this is the first report on an all-fiber, stretched-pulse laser operating beyond 2 μm with nanomaterial-based SA.
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12
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Hinkelmann M, Wandt D, Morgner U, Neumann J, Kracht D. Mode-locked Ho-doped laser with subsequent diode-pumped amplifier in an all-fiber design operating at 2052 nm. OPTICS EXPRESS 2017; 25:20522-20529. [PMID: 29041732 DOI: 10.1364/oe.25.020522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 07/25/2017] [Indexed: 06/07/2023]
Abstract
We present a mode-locked holmium-doped all-fiber soliton laser operating in the 2052 nm wavelength range. The ultrashort pulse oscillator is simultaneously self-providing 1950-nm radiation for efficient in-band pumping in a subsequent thulium-/holmium-doped fiber tandem amplifier. More than 76 nJ-pulses for Ho:YLF or Ho:YVO4 amplifier seeding have been achieved.
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Pawliszewska M, Ge Y, Li Z, Zhang H, Sotor J. Fundamental and harmonic mode-locking at 2.1 μm with black phosphorus saturable absorber. OPTICS EXPRESS 2017; 25:16916-16921. [PMID: 28789191 DOI: 10.1364/oe.25.016916] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/01/2017] [Indexed: 06/07/2023]
Abstract
We report mode-locking in holmium-doped all-fiber laser based on black phosphorus saturable absorber. The generated solitons are centered at 2094 nm with bandwidth reaching 4.2 nm and pulse duration of 1.3 ps. In harmonic mode-locking, up to 10th harmonic (290 MHz) was obtained. Properties of black phosphorus saturable absorber are investigated. Our findings validate black phosphorus suitability for ultrafast applications in mid-infrared.
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Sotor J, Bogusławski J, Martynkien T, Mergo P, Krajewska A, Przewłoka A, StrupiŃski W, SoboŃ G. All-polarization-maintaining, stretched-pulse Tm-doped fiber laser, mode-locked by a graphene saturable absorber. OPTICS LETTERS 2017; 42:1592-1595. [PMID: 28409806 DOI: 10.1364/ol.42.001592] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this Letter, we demonstrate an all-polarization-maintaining, stretched-pulse Tm-doped fiber laser generating ∼200 fs pulses centered at 1945 nm. As a saturable absorber, a graphene/poly(methyl methacrylate) composite was used. To the best of our knowledge, this is the first demonstration of stretched-pulse operation of a graphene-based fiber laser at 2 μm.
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Aubrecht J, Peterka P, Koška P, Podrazký O, Todorov F, Honzátko P, Kašík I. Self-swept holmium fiber laser near 2100 nm. OPTICS EXPRESS 2017; 25:4120-4125. [PMID: 28241618 DOI: 10.1364/oe.25.004120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Self-sweeping of laser wavelength corresponding to holmium emission near 2100 nm is reported. The sweeping occurred in ~4 nm interval with rate ~0.7 nm/s from longer towards shorter wavelengths. Origins of the selection of the sweeping direction are discussed. The laser wavelength drift with time was registered by Fourier transform infrared spectrometer. To our knowledge it is the first observation of self-swept fiber laser beyond 2000 nm.
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Wang J, Liang X, Hu G, Zheng Z, Lin S, Ouyang D, Wu X, Yan P, Ruan S, Sun Z, Hasan T. 152 fs nanotube-mode-locked thulium-doped all-fiber laser. Sci Rep 2016; 6:28885. [PMID: 27374764 PMCID: PMC4931500 DOI: 10.1038/srep28885] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/10/2016] [Indexed: 11/13/2022] Open
Abstract
Ultrafast fiber lasers with broad bandwidth and short pulse duration have a variety of applications, such as ultrafast time-resolved spectroscopy and supercontinuum generation. We report a simple and compact all-fiber thulium-doped femtosecond laser mode-locked by carbon nanotubes. The oscillator operates in slightly normal cavity dispersion at 0.055 ps2, and delivers 152 fs pulses with 52.8 nm bandwidth and 0.19 nJ pulse energy. This is the shortest pulse duration and the widest spectral width demonstrated from Tm-doped all-fiber lasers based on 1 or 2 dimensional nanomaterials, underscoring their growing potential as versatile saturable absorber materials.
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Affiliation(s)
- Jinzhang Wang
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiaoyan Liang
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Guohua Hu
- Cambridge Graphene Centre, University of Cambridge, Cambridge CB3 0FA, United Kingdom
| | - Zhijian Zheng
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shenghua Lin
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Deqin Ouyang
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xu Wu
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Peiguang Yan
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shuangchen Ruan
- Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Zhipei Sun
- Department of Micro- and Nanosciences, Aalto University, Aalto, FI-00076, Finland
| | - Tawfique Hasan
- Cambridge Graphene Centre, University of Cambridge, Cambridge CB3 0FA, United Kingdom
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Jeong H, Choi SY, Kim MH, Rotermund F, Cha YH, Jeong DY, Lee SB, Lee K, Yeom DI. All-fiber Tm-doped soliton laser oscillator with 6 nJ pulse energy based on evanescent field interaction with monoloayer graphene saturable absorber. OPTICS EXPRESS 2016; 24:14152-14158. [PMID: 27410573 DOI: 10.1364/oe.24.014152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate an all-fiber Tm-doped soliton laser with high power by using a monolayer graphene saturable absorber (SA). Large area, uniform monolayer graphene was transferred to the surface of the side-polished fiber (SPF) to realize an in-line graphene SA that operates around 2 μm wavelength. To increase the nonlinear interaction with graphene, we applied an over-cladding onto the SPF, where enhanced optical absorption at monolayer graphene was observed. All-fiber Tm-doped mode-locked laser was built including our in-line graphene SA, which stably delivered the soliton pulses with 773 fs pulse duration. The measured 3-dB spectral bandwidth was 5.14 nm at the wavelength of 1910 nm. We obtained the maximum average output power of 115 mW at a repetition rate of 19.31 MHz. Corresponding pulse energy was estimated to be 6 nJ, which is the highest value among all-fiber Tm-doped soliton oscillators using carbon-material-based SAs.
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