title: Short all Tm-doped germanate glass fiber MOPA single-frequency laser at 1.95 μm.
abstract: Based on heavily Tm-doped germanate glass fibers (TGFs), a short all-TGF MOPA laser system with uniform core parameters in each stage was demonstrated. An 11.7 W stable single-frequency laser at 1.95 μm with an optical-to-optical conversion efficiency of 20.4% is obtained from a homemade 31-cm-long double-cladding single-mode TGF. The estimated stimulated Brillouin scattering (SBS) threshold of 980 W and the measured relative intensity noise of < -130 dB/Hz for frequencies above 2 MHz are achieved in this MOPA system. Furthermore, the prospect for further power-scaling of such short MOPA laser is considered.
authors.forename: Changsheng
authors.initials: C
authors.lastname: Yang
authors.forename: Dan
authors.initials: D
authors.lastname: Chen
authors.forename: Shanhui
authors.initials: S
authors.lastname: Xu
authors.forename: Huaqiu
authors.initials: H
authors.lastname: Deng
authors.forename: Wei
authors.initials: W
authors.lastname: Lin
authors.forename: Qilai
authors.initials: Q
authors.lastname: Zhao
authors.forename: Yuanfei
authors.initials: Y
authors.lastname: Zhang
authors.forename: Kaijun
authors.initials: K
authors.lastname: Zhou
authors.forename: Zhouming
authors.initials: Z
authors.lastname: Feng
authors.forename: Qi
authors.initials: Q
authors.lastname: Qian
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Yang