M. Pei, J. Wu, Yu. Ding, X. M. Duan, “Highly efficient 1610-nm in-band cw Tm:LSO laser”, Kvantovaya Elektronika, 2022, Volume 52, Number 8,Pages <nobr>705

Highly efficient 1610-nm in-band cw Tm:LSO laser

M. Pei^a, J. Wu^a, Yu. Ding^b, X. M. Duan^a

^a National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, China
^b Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin, China

Abstract: We demonstrate a highly efficient continuous-wave Tm:LSO laser in-band pumped by a FBG-locked Er-doped fibre laser at 1610 nm. A maximum output power of 3.2 W at 2055.1 nm is achieved with a slope efficiency of 51.7% with respect to the absorbed pump power. The beam quality factors M² at a maximum output power are measured to be 1.1 and 1.2 in horizontal and vertical directions, respectively.

Keywords: solid-state laser, in-band pumping, Tm:LSO.

Received: 30.05.2022