Tunable 2 μm dual-wavelength PPLN optical parametric oscillator intracavity pumped by passive Q-switched Nd:YLF lasers

Jialin Mei; Kai Zhong; Yong Xiao; Zhaoyang Li; Chunyan Zhang; Jingshui Zhang; Yupeng Wang; Jianquan Yao

doi:10.1117/12.2575808

10 October 2020 Tunable 2μm dual-wavelength PPLN optical parametric oscillator intracavity pumped by passive Q-switched Nd:YLF lasers

Jialin Mei, Kai Zhong, Yong Xiao, Zhaoyang Li, Chunyan Zhang, Jingshui Zhang, Yupeng Wang, Jianquan Yao

Author Affiliations +

Proceedings Volume 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII; 115590J (2020) https://doi.org/10.1117/12.2575808
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

In this paper, we demonstrated a passive Q-switched 2μm dual-wavelength intra-cavity PPLN optical parameter oscillator (OPO) with the advantages of compactness, large tuning range, and narrow linewidth. By using c-cut Nd:YLF crystal as the laser gain medium, the output power of the fundamental laser at 1053nm can reach up to 0.916W, corresponding to the incident pump power of 9.79W. When the temperature of PPLN crystal was varied between 40°C and 160°C, the orthogonal polarized dual-wavelength lasers can be tuned from 2026.4nm to 2193.9nm. As to the a-cut situation, the output power at the fundamental wavelength of 1047nm is about 1.192W. In the same temperature range, two orthogonal polarized wavelengths can be tuned from 1991.8nm to 2206.8nm. Such type-Ⅱ OPOs have potential abilities to work for sensing, spectroscopy, imaging, nonlinear frequency conversion and so on.

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Jialin Mei, Kai Zhong, Yong Xiao, Zhaoyang Li, Chunyan Zhang, Jingshui Zhang, Yupeng Wang, and Jianquan Yao "Tunable 2μm dual-wavelength PPLN optical parametric oscillator intracavity pumped by passive Q-switched Nd:YLF lasers", Proc. SPIE 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII, 115590J (10 October 2020); https://doi.org/10.1117/12.2575808

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