Electrically controlled tunable optical parametric oscillator (3.0-6.7 μm) based on BaGa4Se7 crystal pumped by a Q-switch Nd:YAG laser

Yongping Zhang; Yongfang Liu; Dagong Jia; Taoying Yu; Yindong Huang; Ziyi Zhang; Ruixing Wang

doi:10.1117/12.2575755

5 November 2020 Electrically controlled tunable optical parametric oscillator (3.0-6.7 μm) based on BaGa₄Se₇ crystal pumped by a Q-switch Nd:YAG laser

Yongping Zhang, Yongfang Liu, Dagong Jia, Taoying Yu, Yindong Huang, Ziyi Zhang, Ruixing Wang

Author Affiliations +

Proceedings Volume 11562, AOPC 2020: Advanced Laser Technology and Application; 115620B (2020) https://doi.org/10.1117/12.2575755
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

The Optical Parametric Oscillator (OPO) is a simple and effective method to generate desirable and specific wavelength. The OPO laser is small, portable and has high efficiency, low threshold and can be operated at room temperature. In this paper, we report an electrically controlled tunable optical parametric oscillator operating from wavelength of 3.0 to 6.7 μm. The nanosecond OPO is based on BaGa4Se7 (BGSe) crystal and pumped by a 10 ns 1.064 μm electro-optic Q-switched Nd:YAG laser. The output mid infrared idler wave can be tuned from 3.0 μm to 6.7 μ with pulse energy as high as 2.55 mJ at 3.8 μm and can be even increased with more pump power. The output idler wavelength can be tuned by turning the rotation angle of the crystal, which is controlled by an electronic motor. The motorized continuous rotation stage is compact and highly precise with minimum rotation step of 0.0025°. This enables the fine tuning of the phase-matching angel and the resulting output wavelength. The central idler wavelength is 4.6 μm (rotation angle is 0°).

Citation Download Citation

Yongping Zhang, Yongfang Liu, Dagong Jia, Taoying Yu, Yindong Huang, Ziyi Zhang, and Ruixing Wang "Electrically controlled tunable optical parametric oscillator (3.0-6.7 μm) based on BaGa₄Se₇ crystal pumped by a Q-switch Nd:YAG laser", Proc. SPIE 11562, AOPC 2020: Advanced Laser Technology and Application, 115620B (5 November 2020); https://doi.org/10.1117/12.2575755

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available