Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source
Lasers operating around 2-µm have been extensively researched for various applications, such as LiDAR, remote sensing, optical communication, and medicine. One of the approaches to generate 2-µm emission is to employ an optical parametric oscillator pumped by 1-µm laser; however, improving the 2-µm...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-03-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2024.1383254/full |
| _version_ | 1797289752220663808 |
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| author | Si-Ying Chen Yun-Fei Yang Yun-Fei Li Yun-Fei Li Gong Wang Gong Wang Yu Yu Yu Yu Hai-Yang Du Feng-Li Cao Hong-Wei Yin Chen-Yu Zhu Yu-Lei Wang Yu-Lei Wang Zhi-Wei Lu Zhi-Wei Lu |
| author_facet | Si-Ying Chen Yun-Fei Yang Yun-Fei Li Yun-Fei Li Gong Wang Gong Wang Yu Yu Yu Yu Hai-Yang Du Feng-Li Cao Hong-Wei Yin Chen-Yu Zhu Yu-Lei Wang Yu-Lei Wang Zhi-Wei Lu Zhi-Wei Lu |
| author_sort | Si-Ying Chen |
| collection | DOAJ |
| description | Lasers operating around 2-µm have been extensively researched for various applications, such as LiDAR, remote sensing, optical communication, and medicine. One of the approaches to generate 2-µm emission is to employ an optical parametric oscillator pumped by 1-µm laser; however, improving the 2-µm laser conversion efficiency of optical parametric oscillators is still a challenge. In this study, we exploit the high nonlinear coefficient of the KTP crystal at the 2-µm band to realize a high-efficiency optical parametric oscillator. The OPO is driven by a laser diode (LD) side-pumped, electro-optic Q-modulated Nd:YAG laser. The cavity was designed and optimized based on mode matching to increase the peak power density of the pump laser. Different powers were obtained for different pump laser focusing conditions, and the maximum power was obtained when the KTP crystal was placed in front of the pump laser focus. The output characteristics of the KTP at different phase-matching angles were also investigated. An output power of 2.44 W and an output pulse width of 9.04 ns were obtained at 2154.4 nm with an optical-to-optical conversion efficiency of 23.39% and a slope efficiency of 36.09%. |
| first_indexed | 2024-03-07T19:10:32Z |
| format | Article |
| id | doaj.art-92674c8d0398442893529bb654fc6e72 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-03-07T19:10:32Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-92674c8d0398442893529bb654fc6e722024-03-01T04:54:13ZengFrontiers Media S.A.Frontiers in Physics2296-424X2024-03-011210.3389/fphy.2024.13832541383254Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump sourceSi-Ying Chen0Yun-Fei Yang1Yun-Fei Li2Yun-Fei Li3Gong Wang4Gong Wang5Yu Yu6Yu Yu7Hai-Yang Du8Feng-Li Cao9Hong-Wei Yin10Chen-Yu Zhu11Yu-Lei Wang12Yu-Lei Wang13Zhi-Wei Lu14Zhi-Wei Lu15Center for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaHebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaHebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaHebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin, ChinaHebei Thahoo Photoelectric Technology Co. Ltd., Shijiazhuang, ChinaDepartment of Vehicle and Electrical Engineering, Shijiazhuang Branch, Army Engineering University of PLA, Shijiazhuang, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaHebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin, ChinaCenter for Advanced Laser Technology, Hebei University of Technology, Tianjin, ChinaHebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin, ChinaLasers operating around 2-µm have been extensively researched for various applications, such as LiDAR, remote sensing, optical communication, and medicine. One of the approaches to generate 2-µm emission is to employ an optical parametric oscillator pumped by 1-µm laser; however, improving the 2-µm laser conversion efficiency of optical parametric oscillators is still a challenge. In this study, we exploit the high nonlinear coefficient of the KTP crystal at the 2-µm band to realize a high-efficiency optical parametric oscillator. The OPO is driven by a laser diode (LD) side-pumped, electro-optic Q-modulated Nd:YAG laser. The cavity was designed and optimized based on mode matching to increase the peak power density of the pump laser. Different powers were obtained for different pump laser focusing conditions, and the maximum power was obtained when the KTP crystal was placed in front of the pump laser focus. The output characteristics of the KTP at different phase-matching angles were also investigated. An output power of 2.44 W and an output pulse width of 9.04 ns were obtained at 2154.4 nm with an optical-to-optical conversion efficiency of 23.39% and a slope efficiency of 36.09%.https://www.frontiersin.org/articles/10.3389/fphy.2024.1383254/full2 μmKTPoptical parametric oscillatorside-pump1064 nm |
| spellingShingle | Si-Ying Chen Yun-Fei Yang Yun-Fei Li Yun-Fei Li Gong Wang Gong Wang Yu Yu Yu Yu Hai-Yang Du Feng-Li Cao Hong-Wei Yin Chen-Yu Zhu Yu-Lei Wang Yu-Lei Wang Zhi-Wei Lu Zhi-Wei Lu Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source Frontiers in Physics 2 μm KTP optical parametric oscillator side-pump 1064 nm |
| title | Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source |
| title_full | Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source |
| title_fullStr | Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source |
| title_full_unstemmed | Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source |
| title_short | Efficient 10 ns-scale 2-μm optical parametric oscillator based on 1064 nm pump source |
| title_sort | efficient 10 ns scale 2 μm optical parametric oscillator based on 1064 nm pump source |
| topic | 2 μm KTP optical parametric oscillator side-pump 1064 nm |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2024.1383254/full |
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