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Accepted: Jul. 7, 2020

Posted: Sep. 17, 2020

Published Online: Sep. 21, 2020

The Author Email: Li Fan (fanli@yzu.edu.cn)

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Li Fan, Xiaoyu Wang, Xiaodong Zhao, Jianhui Wang, Jun Shen, Huibo Fan, Jun Zhu, Mingya Shen. First-Stokes and second-Stokes multi-wavelength continuous-wave operation in Nd:YVO4/BaWO4 Raman laser under in-band pumping[J]. Chinese Optics Letters, 2020, 18(11): 111401

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Fig. 1. Schematic diagram of the CW multi-wavelength $Nd:YVO4/BaWO4$ intracavity Raman laser.

Fig. 2. (a) Output spectrum of the Raman laser with 1:2 coupler and 14 mm crystal under an incident pump power of 26.3 W. (b) Raman output powers with respect to the incident pump power using output couplers with different radii of curvature (100, 200, and 500 mm).

Fig. 3. (a) Output spectrum of the Raman laser with 1:3 coupler and 14 mm crystal at an incident pump power of 24.8 W. (b) Raman output powers with respect to the incident pump power using output couplers with different radii of curvature (100, 200, 300, and 500 mm).

Fig. 4. Simulated cavity mode sizes of the fundamental laser in the $Nd:YVO4$ laser crystal as a function of incident pump power under different pump spots for output couplers with different radii of curvature (100 and 200 mm).

Fig. 6. (a) Output spectrum of the Raman laser with an $a$-polarized pump under incident pump power of 20 W. (b) Raman output powers with respect to the incident pump power when the fundamental polarization is parallel to the $a$ axis and $c$ axis of $BaWO4$.