title: High OSNR watt-level single-frequency one-stage PM-MOPA fiber laser at 1083 nm.
abstract: A 1.03 W optical signal-to-noise ratio (OSNR) of > 70 dB single-frequency polarization-maintained master-oscillator power amplifier (PM-MOPA) laser at 1083 nm was demonstrated. The seed laser of this laser system was a distributed Bragg reflector short cavity Yb-doped phosphate fiber oscillator. A one-stage core-pumped amplification configuration was employed, in which the typical gain is 9.7 dB and the optical-to-optical conversion efficiency is 68.7%. The estimated laser linewidth is less than 3.5 kHz, the measured polarization-extinction ratio is greater than 25 dB, and the obtained relative intensity noise of fiber laser for frequencies of over 2 MHz is less than -130 dB/Hz.
authors: Changsheng
authors: C
authors: Yang
authors: Shanhui
authors: S
authors: Xu
authors: Qi
authors: Q
authors: Yang
authors: Shupei
authors: S
authors: Mo
authors: Can
authors: C
authors: Li
authors: Xin
authors: X
authors: He
authors: Zhouming
authors: Z
authors: Feng
authors: Zhongmin
authors: Z
authors: Yang
authors: Zhonghong
authors: Z
authors: Jiang