Meng Dongdong, Qiao Zhanduo, Gao Baoguang, Wang Tianqi, Fan Zhongwei. Experimental study on tunable characteristics of optical parametric oscillator based on ZnGeP2 in long-infared dual-band[J]. Infrared and Laser Engineering, 2022, 51(5): 2021G008. doi: 10.3788/IRLA2021G008
Citation:
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Meng Dongdong, Qiao Zhanduo, Gao Baoguang, Wang Tianqi, Fan Zhongwei. Experimental study on tunable characteristics of optical parametric oscillator based on ZnGeP2 in long-infared dual-band[J]. Infrared and Laser Engineering, 2022, 51(5): 2021G008. doi: 10.3788/IRLA2021G008
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Experimental study on tunable characteristics of optical parametric oscillator based on ZnGeP2 in long-infared dual-band
- 1.
The Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
- 2.
School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
Funds:
National Key Research and Development Program of China(2021YFB3602600)
- Received Date: 2022-01-21
- Rev Recd Date:
2022-03-07
- Accepted Date:
2022-04-22
- Publish Date:
2022-06-08
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Abstract
A widely tunable long-infrared optical parametric oscillator (OPO) based on ZnGeP2 (ZGP) with nanosecond pulses output in dual bands was reported in this paper. As a fundamental laser of ZGP-OPO, KTP- OPO of 2.1 μm based on type Ⅱ phase match was pumped by 1064 nm fundamental delivering <10 ns pulses at 50 Hz. Furthermore, the ZGP-OPO of 7-11 μm based on type Ⅰ phase match was designed. Continuous-tunable signal wavelengths of 2.815-2.963 μm corresponding idle wavelengths of 7.82-9.08 μm was obtained using angle tuning of ZGP. Continuous-tunable signal wavelengths of 2.624-2.662 μm and 2.745-2.956 μm, which correspond the idle wavelengths of 7.94-9.07 μm and 10.20-10.82 μm respectively , were obtained using pump wavelengths tuning. The single-pulse energy was 0.8 mJ at 8.03 μm, pump to idler conversion efficiency was 9.4%.
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