Compact resonantly intra-cavity pumped tunable Ho:Sc2SiO5 laser

• Published in: Infrared physics & technology Vol. 85; pp. 154 - 156
• Main Authors: Yang, Xiao-tao, Song, En-zhe, Xie, Wen-qiang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2017
• Subjects: Intra-cavity pumped; Solid-state laser; SSO; Tunable; Tunable; Intra-cavity pumped; SSO; Solid-state laser
• ISSN: 1350-4495; 1879-0275
• DOI: 10.1016/j.infrared.2017.06.001

•We report a low-threshold intra-cavity pumped continuous-wave Ho:SSO laser is realized, and a tunable output wavelength is demonstrated by using a birefringent filter in the laser resonant cavity.•A wavelength tunable range of 140nm from 2020nm to 2160nm is achieved. A compact intra-cavity pumped low threshold continuous-wave Ho:Sc2SiO5 laser is reported. The characteristics of output wavelength tuning are investigated by use a intra-cavity briefringent (BF) filter. A wavelength tunable range of 140nm from 2020 to 2160nm is achieved. For the free-running mode, the laser slope efficiency is 24.8%, when the output central wavelength is 2110nm. The laser threshold is about 820mW of incident pump power. With the BF filter, a maximum output power of 870mW is obtained at the incident pump power of 5W, corresponding to a slope efficiency of 20.3%. The characteristics of output wavelength verse the crystal temperature are also investigated.