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Lv M, Zhao J, Guo L, Zhang Y, Zhao Q, Teng L, Wang M, Zhang S, Wang X. Nonlinear Optical Response of Au/CsPbI 3 Quantum Dots and Its Laser Modulation Characteristics at 2.7 μm. MICROMACHINES 2024; 15:1043. [PMID: 39203694 PMCID: PMC11356005 DOI: 10.3390/mi15081043] [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: 06/24/2024] [Revised: 08/11/2024] [Accepted: 08/16/2024] [Indexed: 09/03/2024]
Abstract
A passively Q-switched Er:YAP laser of 2.7 µm, utilizing Au-doped CsPbI3 quantum dots (QDs) as a saturable absorber (SA), was realized. It was operated stably with a minimum pulse width of 185 ns and a maximum repetition rate of 480 kHz. The maximum pulse energy and the maximum peak power were 0.6 μJ and 2.9 W, respectively, in the Q-switched operation. The results show that the CsPbI3 QDs SA exhibits remarkable laser modulation properties at ~3 μm.
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Affiliation(s)
- Mengqi Lv
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Jin Zhao
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Leilei Guo
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Yanxu Zhang
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Qiuling Zhao
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Lihua Teng
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Maorong Wang
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Shuaiyi Zhang
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
| | - Xia Wang
- Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory, School of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao 266061, China; (M.L.); (J.Z.); (L.G.); (Y.Z.); (Q.Z.); (L.T.); (S.Z.)
- School of Physics and Technology, University of Jinan, Jinan 250022, China
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Michaud LC, Boilard T, Magnan-Saucier S, Paradis P, Talbot L, Thiboult A, Nadeau DF, Vallée R, Bernier M. Towards real-time active imaging of greenhouse gases using tunable mid-infrared all-fiber lasers. APPLIED OPTICS 2023; 62:G69-G76. [PMID: 37707065 DOI: 10.1364/ao.486929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/30/2023] [Indexed: 09/15/2023]
Abstract
We report a tunable all-fiber laser emitting a maximum output power of 2.55 W around 3240 nm. The fiber laser cavity based on a fluoride fiber doped with dysprosium ions yields an efficiency of 42% according to the in-band launched pump power at 2825 nm. Due to a custom piezoelectric fiber Bragg grating (FBG) package, mechanical strains applied to the narrowband FBG used as the input cavity coupler allowed for fast tuning of the emission wavelength over a spectral range of 1.5 nm. This laser was deployed in the field in northern Québec (Canada) to assess its performances for remote sensing of methane in the presence of a significant amount of water vapor, i.e., over a hydroelectric reservoir. The preliminary results acquired during this field campaign confirm the great potential of the proposed approach for the development of a real-time active imaging system of greenhouse gases.
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Li K, Niu C, Wu C, Yu Y, Ma Y. Development of a 2 μm Solid-State Laser for Lidar in the Past Decade. SENSORS (BASEL, SWITZERLAND) 2023; 23:7024. [PMID: 37631561 PMCID: PMC10458207 DOI: 10.3390/s23167024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/19/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023]
Abstract
The 2 μm wavelength belongs to the eye-safe band and has a wide range of applications in the fields of lidar, biomedicine, and materials processing. With the rapid development of military, wind power, sensing, and other industries, new requirements for 2 μm solid-state laser light sources have emerged, especially in the field of lidar. This paper focuses on the research progress of 2 μm solid-state lasers for lidar over the past decade. The technology and performance of 2 μm pulsed single longitudinal mode solid-state lasers, 2 μm seed solid-state lasers, and 2 μm high power solid-state lasers are, respectively, summarized and analyzed. This paper also introduces the properties of gain media commonly used in the 2 μm band, the construction method of new bonded crystals, and the fabrication method of saturable absorbers. Finally, the future prospects of 2 μm solid-state lasers for lidar are presented.
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Affiliation(s)
| | | | - Chunting Wu
- Jilin Key Laboratory of Solid-State Laser Technology and Application, Changchun University of Science and Technology, Changchun 130022, China; (K.L.); (C.N.); (Y.Y.); (Y.M.)
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