Multi-wavelength continuous-wave Nd:YVO4 self-Raman laser under in-band pumping

doi:10.1088/1674-1056/28/8/084210

Abstract Multi-wavelength continuous-wave self-Raman laser with an a-cut composite YVO₄/Nd:YVO₄/YVO₄ crystal pumped by an 879-nm wavelength-locked laser diode is demonstrated for the first time. Multi-wavelength Raman lasers at 1168.4, 1176, 1178.7, and 1201.6 nm are achieved by the first Stokes shift of the multi-wavelength fundamental lasers at 1064, 1066.7, 1073.6, 1084, and 1085.6 nm with two Raman shifts of 890 and 816 cm^-1. A maximum Raman output power of 2.56 W is achieved through the use of a 20-mm-long composite crystal, with a corresponding optical conversion efficiency of 9.8%. The polarization directions of different fundamental and Raman lasers are investigated and found to be orthogonal π and σ polarizations. These orthogonally polarized multi-wavelength lasers with small wavelength separation pave the way to the development of a potential laser source for application in spectral analysis, laser radar and THz generation.

Keywords: multi-wavelength continuous-wave self-Raman laser in-band pumping

Received: 13 December 2018
Revised: 22 April 2019
Accepted manuscript online:

PACS:	42.55.Xi	(Diode-pumped lasers)
	42.55.Ye	(Raman lasers)
	42.60.Pk	(Continuous operation)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11774301) and the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 11804292).

Corresponding Authors: Li Fan
E-mail: fanli@yzu.edu.cn

Cite this article:

Li Fan(樊莉), Xiao-Dong Zhao(赵孝冬), Yun-Chuan Zhang(张蕴川), Xiao-Dong Gu(顾晓东), Hao-Peng Wan(万浩鹏), Hui-Bo Fan(范会博), Jun Zhu(朱骏) Multi-wavelength continuous-wave Nd:YVO₄ self-Raman laser under in-band pumping 2019 Chin. Phys. B 28 084210

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Multi-wavelength continuous-wave Nd:YVO4 self-Raman laser under in-band pumping

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Multi-wavelength continuous-wave Nd:YVO₄ self-Raman laser under in-band pumping