Wavelength-tunable narrow-linewidth gaseous Raman laser

• DOI: 10.1364/ao.424400
• Publication Date: 2021-06-02T20:01:24Z
• Authors: Chencheng Shen; Xianglong Cai; Xinjun Su; Tiancheng Zheng; Jinbo Liu; Ying Chen; Yuxi Jia; Dong Liu; Jingwei Guo
• Keywords: Laser linewidth

Gaseous Raman lasers cover a range of wavelengths but lack wavelength tunability. Here, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mn>1</mml:mn> <mml:mspace width="thickmathspace"/> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="normal">c</mml:mi> </mml:mrow> <mml:msup> mathvariant="normal">m</mml:mi> <mml:mo>−</mml:mo> </mml:msup> </mml:math> linewidth 532 nm laser was used as pump laser, and with narrow-linewidth seed injection, first Stokes (S1) achieved. By tuning the S1 up to obtained. The anti-Stokes second could also be tuned. A theoretical model developed, spectral profiles from experiments simulations agreed well; further simulation predicted that compressed narrow <mml:mn>0.01</mml:mn> under optimal conditions. universal method fine-tunable is presented can utilized in several important applications.