High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm
A high power and efficiency mid-infrared optical parametric oscillator based on a BaGa<sub>4</sub>Se<sub>7</sub> crystal is demonstrated in this paper. It was pumped by a 500 Hz Q-switched Nd:YAG laser at room temperature. Without cooling, up to 0.76 W output power at 4.43 μm...
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MDPI AG
2022-02-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/2/105 |
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| author | Minqiang Kang Ying Deng Jiyong Yao Qihua Zhu |
| author_facet | Minqiang Kang Ying Deng Jiyong Yao Qihua Zhu |
| author_sort | Minqiang Kang |
| collection | DOAJ |
| description | A high power and efficiency mid-infrared optical parametric oscillator based on a BaGa<sub>4</sub>Se<sub>7</sub> crystal is demonstrated in this paper. It was pumped by a 500 Hz Q-switched Nd:YAG laser at room temperature. Without cooling, up to 0.76 W output power at 4.43 μm was generated with respect to the incident pump power (1064 nm) of 5.52 W, corresponding to an optical-to-optical conversion efficiency of 13.7%. The corresponding slope efficiency was as high as 18.7%. The pulse width of the signal wave was 5.2 ns at the pump pulse of 13.7 ns. To the best of our knowledge, this is to date the highest output power achieved at 4–5 μm from a 1064 nm pumped BGSe OPO laser. Considering that no additional cooling system was applied, this work provides a good solution for a high-efficient, compact or even portable mid-infrared solid-state laser device. |
| first_indexed | 2024-03-09T21:12:46Z |
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| language | English |
| last_indexed | 2024-03-09T21:12:46Z |
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| spelling | doaj.art-2adceba7f336473e8930fae8350fdfed2023-11-23T21:41:34ZengMDPI AGPhotonics2304-67322022-02-019210510.3390/photonics9020105High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nmMinqiang Kang0Ying Deng1Jiyong Yao2Qihua Zhu3Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, ChinaLaser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaLaser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, ChinaA high power and efficiency mid-infrared optical parametric oscillator based on a BaGa<sub>4</sub>Se<sub>7</sub> crystal is demonstrated in this paper. It was pumped by a 500 Hz Q-switched Nd:YAG laser at room temperature. Without cooling, up to 0.76 W output power at 4.43 μm was generated with respect to the incident pump power (1064 nm) of 5.52 W, corresponding to an optical-to-optical conversion efficiency of 13.7%. The corresponding slope efficiency was as high as 18.7%. The pulse width of the signal wave was 5.2 ns at the pump pulse of 13.7 ns. To the best of our knowledge, this is to date the highest output power achieved at 4–5 μm from a 1064 nm pumped BGSe OPO laser. Considering that no additional cooling system was applied, this work provides a good solution for a high-efficient, compact or even portable mid-infrared solid-state laser device.https://www.mdpi.com/2304-6732/9/2/105mid-infrared lasersnonlinear optics materialsparametric oscillators and amplifiersno cooling |
| spellingShingle | Minqiang Kang Ying Deng Jiyong Yao Qihua Zhu High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm Photonics mid-infrared lasers nonlinear optics materials parametric oscillators and amplifiers no cooling |
| title | High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm |
| title_full | High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm |
| title_fullStr | High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm |
| title_full_unstemmed | High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm |
| title_short | High Power and Efficient 4.43 μm BaGa<sub>4</sub>Se<sub>7</sub> Optical Parametric Oscillator Pumped at 1064 nm |
| title_sort | high power and efficient 4 43 μm baga sub 4 sub se sub 7 sub optical parametric oscillator pumped at 1064 nm |
| topic | mid-infrared lasers nonlinear optics materials parametric oscillators and amplifiers no cooling |
| url | https://www.mdpi.com/2304-6732/9/2/105 |
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