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

• 来源期刊: 中国物理B（英文版）
• 关键词: multi-wavelength continuous-wave self-Raman laser in-band pumping
• 年，卷（期）: 2019,（8）
• 页码范围: 184-189
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/28/8/084210

摘要

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.