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Chen S, Wang F, Kuang F, Kang S, Liang H, Zheng L, Guan L, Wu Q. Femtosecond Pulsed Fiber Laser by an Optical Device Based on NaOH-LPE Prepared WSe 2 Saturable Absorber. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2747. [PMID: 36014612 PMCID: PMC9415237 DOI: 10.3390/nano12162747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
We report on all-optical devices prepared from WSe2 combined with drawn tapered fibers as saturable absorbers to achieve ultrashort pulse output. The saturable absorber with a high damage threshold and high saturable absorption characteristics is prepared for application in erbium-doped fiber lasers by the liquid phase exfoliation method for WSe2, and the all-optical device exhibited strong saturable absorption characteristics with a modulation depth of 15% and a saturation intensity of 100.58 W. The net dispersion of the erbium-doped fiber laser cavity is ~-0.1 ps2, and a femtosecond pulse output with a bandwidth of 11.4 nm, a pulse width of 390 fs, and a single-pulse capability of 42 pJ is obtained. Results indicate that the proposed WSe2 saturable absorbers are efficient, photonic devices to realize stable fiber lasers. The results demonstrate that the WSe2 saturable absorber is an effective photonic device for realizing stable fiber lasers, which have a certain significance for the development of potential photonic devices.
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Affiliation(s)
- Si Chen
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Fengpeng Wang
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Fangguang Kuang
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Shuying Kang
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Hanwen Liang
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Lijing Zheng
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Lixin Guan
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
| | - Qing Wu
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China
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Fadhel MM, Ali N, Rashid H, Sapiee NM, Hamzah AE, Zan MSD, Aziz NA, Arsad N. A Review on Rhenium Disulfide: Synthesis Approaches, Optical Properties, and Applications in Pulsed Lasers. NANOMATERIALS 2021; 11:nano11092367. [PMID: 34578683 PMCID: PMC8471421 DOI: 10.3390/nano11092367] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/06/2021] [Accepted: 09/09/2021] [Indexed: 11/16/2022]
Abstract
Rhenium Disulfide (ReS2) has evolved as a novel 2D transition-metal dichalcogenide (TMD) material which has promising applications in optoelectronics and photonics because of its distinctive anisotropic optical properties. Saturable absorption property of ReS2 has been utilized to fabricate saturable absorber (SA) devices to generate short pulses in lasers systems. The results were outstanding, including high-repetition-rate pulses, large modulation depth, multi-wavelength pulses, broadband operation and low saturation intensity. In this review, we emphasize on formulating SAs based on ReS2 to produce pulsed lasers in the visible, near-infrared and mid-infrared wavelength regions with pulse durations down to femtosecond using mode-locking or Q-switching technique. We outline ReS2 synthesis techniques and integration platforms concerning solid-state and fiber-type lasers. We discuss the laser performance based on SAs attributes. Lastly, we draw conclusions and discuss challenges and future directions that will help to advance the domain of ultrafast photonic technology.
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Debnath PC, Yeom DI. Ultrafast Fiber Lasers with Low-Dimensional Saturable Absorbers: Status and Prospects. SENSORS 2021; 21:s21113676. [PMID: 34070539 PMCID: PMC8198619 DOI: 10.3390/s21113676] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/14/2021] [Accepted: 05/16/2021] [Indexed: 12/22/2022]
Abstract
Wide-spectral saturable absorption (SA) in low-dimensional (LD) nanomaterials such as zero-, one-, and two-dimensional materials has been proven experimentally with outstanding results, including low saturation intensity, deep modulation depth, and fast carrier recovery time. LD nanomaterials can therefore be used as SAs for mode-locking or Q-switching to generate ultrafast fiber laser pulses with a high repetition rate and short duration in the visible, near-infrared, and mid-infrared wavelength regions. Here, we review the recent development of emerging LD nanomaterials as SAs for ultrafast mode-locked fiber laser applications in different dispersion regimes such as anomalous and normal dispersion regimes of the laser cavity operating in the near-infrared region, especially at ~1550 nm. The preparation methods, nonlinear optical properties of LD SAs, and various integration schemes for incorporating LD SAs into fiber laser systems are introduced. In addition to these, externally (electrically or optically) controlled pulsed fiber laser behavior and other characteristics of various LD SAs are summarized. Finally, the perspectives and challenges facing LD SA-based mode-locked ultrafast fiber lasers are highlighted.
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Affiliation(s)
- Pulak Chandra Debnath
- Department of Energy Systems Research, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 16499, Korea;
- Department of Physics, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 16499, Korea
| | - Dong-Il Yeom
- Department of Energy Systems Research, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 16499, Korea;
- Department of Physics, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 16499, Korea
- Correspondence: ; Tel.: +82-31-219-1937
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Das S, Wang Y, Dai Y, Li S, Sun Z. Ultrafast transient sub-bandgap absorption of monolayer MoS 2. LIGHT, SCIENCE & APPLICATIONS 2021; 10:27. [PMID: 33514690 PMCID: PMC7846580 DOI: 10.1038/s41377-021-00462-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 12/21/2020] [Accepted: 12/30/2020] [Indexed: 05/23/2023]
Abstract
The light-matter interaction in materials is of remarkable interest for various photonic and optoelectronic applications, which is intrinsically determined by the bandgap of the materials involved. To extend the applications beyond the bandgap limit, it is of great significance to study the light-matter interaction below the material bandgap. Here, we report the ultrafast transient absorption of monolayer molybdenum disulfide in its sub-bandgap region from ~0.86 µm to 1.4 µm. Even though this spectral range is below the bandgap, we observe a significant absorbance enhancement up to ~4.2% in the monolayer molybdenum disulfide (comparable to its absorption within the bandgap region) due to pump-induced absorption by the excited carrier states. The different rise times of the transient absorption at different wavelengths indicate the various contributions of the different carrier states (i.e., real carrier states in the short-wavelength region of ~<1 µm, and exciton states in the long wavelength region of ~>1 µm). Our results elucidate the fundamental understanding regarding the optical properties, excited carrier states, and carrier dynamics in the technologically important near-infrared region, which potentially leads to various photonic and optoelectronic applications (e.g., excited-state-based photodetectors and modulators) of two-dimensional materials and their heterostructures beyond their intrinsic bandgap limitations.
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Affiliation(s)
- Susobhan Das
- Department of Electronics and Nanoengineering, Aalto University, 02150, Espoo, Finland.
| | - Yadong Wang
- Department of Electronics and Nanoengineering, Aalto University, 02150, Espoo, Finland
| | - Yunyun Dai
- Department of Electronics and Nanoengineering, Aalto University, 02150, Espoo, Finland
| | - Shisheng Li
- International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Zhipei Sun
- Department of Electronics and Nanoengineering, Aalto University, 02150, Espoo, Finland.
- QTF Centre of Excellence, Department of Applied Physics, Aalto University, Espoo, Finland.
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Pang L, Li L, Wang R, Zhao Q, Liu W, Wu R, Lv Y. Vanadium disulfide for ultrafast photonic application. NANOTECHNOLOGY 2021; 32:015202. [PMID: 33043902 DOI: 10.1088/1361-6528/abb72e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The investigation of two-dimensional (2D) nonlinear optical materials offers a promising way to construct the high-performance optical devices in fundamental and industrial applications because of their rich distinct optoelectronic properties. Herein, by utilizing the liquid exfoliation method, vanadium disulfide (VS2) nanosheets are prepared and the thickness is measured to be 3.16 nm. In addition, we have fabricated the VS2-based optical device and the nonlinear optical property is characterized with modulation depth of 23.97%. By using VS2 as saturable absorber, a high stable passively mode-locking Er-doped fiber laser is obtained with pulse duration of 169 fs and the largest average output power of 70.5 mW. The slope efficiency is up to 7.9%. In comparison to recent results of mode-locking fiber lasers with 2D materials, the VS2-based fiber laser demonstrates better performance. To the best of our knowledge, this is the first example of using VS2 for generating femtosecond mode-locked laser pulse. Our experimental results not only reveal VS2 ultrafast photonics application, but also advance the high-performance applications for information science and nonlinear optics.
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Affiliation(s)
- Lihui Pang
- Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
- National Local Joint Engineering Research Center of Precise Surgery & Regenerative Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
| | - Lu Li
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, People's Republic of China
| | - Rongfeng Wang
- Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
- National Local Joint Engineering Research Center of Precise Surgery & Regenerative Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
| | - Qiyi Zhao
- School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, People's Republic of China
| | - Wenjun Liu
- State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, People's Republic of China
| | - Rongqian Wu
- Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
- National Local Joint Engineering Research Center of Precise Surgery & Regenerative Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
| | - Yi Lv
- Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
- National Local Joint Engineering Research Center of Precise Surgery & Regenerative Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, People's Republic of China
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Yu Y, Chen H, Zhang Z, Chen D, Wang J, Wei Z, Yang J, Yan P. Characteristic Test Analysis of Graphene Plus Optical Microfiber Coupler Combined Device and Its Application in Fiber Lasers. SENSORS 2020; 20:s20061645. [PMID: 32188050 PMCID: PMC7146154 DOI: 10.3390/s20061645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 12/05/2022]
Abstract
In this study, a graphene and optical microfiber coupler (OMC) integrated device (GOMC) was proposed and fabricated. After its characteristic analysis and testing, it was applied to the development of adjustable multi-wavelength fiber lasers. By integrating the OMC with graphene, the polarization dependence of OMC was enhanced. Meanwhile, the novel GOMC was given the capabilities of filtering, coupling, beam splitting, and polarization correlation. When the GOMC was integrated as a filter and beam splitter into the ring cavity of the fiber laser, the proposed GOMC-based fiber laser could achieve single-wavelength and multi-wavelength regulated output. The laser had a 3 dB linewidth of less than 30 pm, a signal-to-noise ratio of approximately 40 dB, and an output power fluctuation of less than 1 dB. The GOMC could also be used for the development of functional devices, such as adjustable mode lockers and mode coupling selectors, which provide an excellent experimental platform for new fiber lasers and the research of multi-dimensional light-field manipulation.
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Affiliation(s)
- Yang Yu
- Department of Physics, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China; (Z.Z.); (D.C.); (J.Y.)
- Deep Sea Technology Laboratory, College of Meteorology and Oceanology, National University of Defense Technology, Changsha 410073, China;
- Correspondence: ; Tel.: +86-186-7001-3227
| | - Hao Chen
- Shenzhen Key Lab of Laser Technology, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.C.); (P.Y.)
| | - Zhenfu Zhang
- Department of Physics, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China; (Z.Z.); (D.C.); (J.Y.)
| | - Dingbo Chen
- Department of Physics, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China; (Z.Z.); (D.C.); (J.Y.)
| | - Jianfei Wang
- Deep Sea Technology Laboratory, College of Meteorology and Oceanology, National University of Defense Technology, Changsha 410073, China;
| | - Zhengtong Wei
- Department of Basic Education, Information Engineering University, Zhengzhou 450000, China;
| | - Junbo Yang
- Department of Physics, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China; (Z.Z.); (D.C.); (J.Y.)
| | - Peiguang Yan
- Shenzhen Key Lab of Laser Technology, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.C.); (P.Y.)
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Zhou H, Qin C, Chen R, Zhou W, Zhang G, Gao Y, Xiao L, Jia S. Accurate Investigation on the Fluorescence Resonance Energy Transfer between Single Organic Molecules and Monolayer WSe 2 by Quantum Coherent Modulation-Enhanced Single-Molecule Imaging Microscopy. J Phys Chem Lett 2019; 10:2849-2856. [PMID: 31084008 DOI: 10.1021/acs.jpclett.9b00854] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hybrid organic two-dimensional (2D) materials heterostructures are attracting tremendous attention for optoelectronic applications due to their low-cost processing and complementary advantages. However, accurate understanding of the fundamental physics on the interface of the hybrid heterostructures at the single-molecule level remains largely unexplored. Here, we investigated the fluorescence resonance energy transfer (FRET) between the single organic molecules and monolayer WSe2 through a newly developed single molecule microscopy technique, quantum coherent modulation-enhanced single-molecule imaging microscopy (QCME-SMIM). It is shown that the extremely weak energy transfer signal was successfully extracted from the huge fluorescence background, originating from the emission of monolayer WSe2. The observed energy transfer efficiency is in agreement with a d-4 distance dependence, with a Förster radius of ∼6 nm for the hybrid structures. Our work not only provides valuable insight into the FRET process at the single-molecule level across such hybrid organic-2D interfaces, but also demonstrates the feasibility of the newly developed technique for investigating the fundamental physics of electron transfer kinetics.
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Affiliation(s)
- Haitao Zhou
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Wenjin Zhou
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Yan Gao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan , Shanxi 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
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He J, Tao L, Zhang H, Zhou B, Li J. Emerging 2D materials beyond graphene for ultrashort pulse generation in fiber lasers. NANOSCALE 2019; 11:2577-2593. [PMID: 30693933 DOI: 10.1039/c8nr09368g] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Ultrafast fiber lasers have significant applications in ultra-precision manufacturing, medical diagnostics, medical treatment, precision measurement and astronomical detection, owing to their ultra-short pulse width and ultra-high peak-power. Since graphene was first explored as an optical saturable absorber for passively mode-locked lasers in 2009, many other 2D materials beyond graphene, including phosphorene, antimonene, bismuthene, transition metal dichalcogenides (TMDs), topological insulators (TIs), metal-organic frameworks (MOFs) and MXenes, have been successively explored, resulting in rapid development of novel 2D materials-based saturable absorbers. Herein, we review the latest progress of the emerging 2D materials beyond graphene for passively mode-locked fiber laser application. These 2D materials are classified into mono-elemental, dual-elemental and multi-elemental 2D materials. The atomic structure, band structure, nonlinear optical properties, and preparation methods of 2D materials are summarized. Diverse integration strategies for applying 2D materials into fiber laser systems are introduced, and the mode-locking performance of the 2D materials-based fiber lasers working at 1-3 μm are discussed. Finally, the perspectives and challenges facing 2D materials-based mode-locked fiber lasers are highlighted.
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Affiliation(s)
- Junshan He
- School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.
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Autere A, Jussila H, Dai Y, Wang Y, Lipsanen H, Sun Z. Nonlinear Optics with 2D Layered Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705963. [PMID: 29575171 DOI: 10.1002/adma.201705963] [Citation(s) in RCA: 206] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/28/2017] [Indexed: 05/09/2023]
Abstract
2D layered materials (2DLMs) are a subject of intense research for a wide variety of applications (e.g., electronics, photonics, and optoelectronics) due to their unique physical properties. Most recently, increasing research efforts on 2DLMs are projected toward the nonlinear optical properties of 2DLMs, which are not only fascinating from the fundamental science point of view but also intriguing for various potential applications. Here, the current state of the art in the field of nonlinear optics based on 2DLMs and their hybrid structures (e.g., mixed-dimensional heterostructures, plasmonic structures, and silicon/fiber integrated structures) is reviewed. Several potential perspectives and possible future research directions of these promising nanomaterials for nonlinear optics are also presented.
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Affiliation(s)
- Anton Autere
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
| | - Henri Jussila
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
| | - Yunyun Dai
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
| | - Yadong Wang
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
| | - Harri Lipsanen
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
| | - Zhipei Sun
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
- QTF Centre of Excellence, Department of Applied Physics, Aalto University, Aalto, FI-00076, Finland
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Li D, Jussila H, Wang Y, Hu G, Albrow-Owen T, C T Howe R, Ren Z, Bai J, Hasan T, Sun Z. Wavelength and pulse duration tunable ultrafast fiber laser mode-locked with carbon nanotubes. Sci Rep 2018; 8:2738. [PMID: 29426938 PMCID: PMC5807438 DOI: 10.1038/s41598-018-21108-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/16/2018] [Indexed: 11/08/2022] Open
Abstract
Ultrafast lasers with tunable parameters in wavelength and time domains are the choice of light source for various applications such as spectroscopy and communication. Here, we report a wavelength and pulse-duration tunable mode-locked Erbium doped fiber laser with single wall carbon nanotube-based saturable absorber. An intra-cavity tunable filter is employed to continuously tune the output wavelength for 34 nm (from 1525 nm to 1559 nm) and pulse duration from 545 fs to 6.1 ps, respectively. Our results provide a novel light source for various applications requiring variable wavelength or pulse duration.
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Affiliation(s)
- Diao Li
- State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, and Institute of Photonics and Photon-Technology, Northwest University, 710069, Xi'an, China
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Espoo, Finland
| | - Henri Jussila
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Espoo, Finland
| | - Yadong Wang
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Espoo, Finland
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 710072, Xi'an, China
| | - Guohua Hu
- Cambridge Graphene Centre, University of Cambridge, 9 JJ Thomson Avenue, CB3 0FA, Cambridge, UK
| | - Tom Albrow-Owen
- Cambridge Graphene Centre, University of Cambridge, 9 JJ Thomson Avenue, CB3 0FA, Cambridge, UK
| | - Richard C T Howe
- Cambridge Graphene Centre, University of Cambridge, 9 JJ Thomson Avenue, CB3 0FA, Cambridge, UK
| | - Zhaoyu Ren
- State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, and Institute of Photonics and Photon-Technology, Northwest University, 710069, Xi'an, China
| | - Jintao Bai
- State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, and Institute of Photonics and Photon-Technology, Northwest University, 710069, Xi'an, China
| | - Tawfique Hasan
- Cambridge Graphene Centre, University of Cambridge, 9 JJ Thomson Avenue, CB3 0FA, Cambridge, UK.
| | - Zhipei Sun
- Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Espoo, Finland.
- QTF Centre of Excellence, Department of Applied Physics, Aalto University, FI-00076, Aalto, Finland.
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