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Proceedings Paper

Amplification of spontaneous emission in 2μm single frequency master oscillator and fiber power amplifier
Author(s): Jing Li; Suhui Yang; Changming Zhao; Haiyang Zhang; Wen Xie
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Paper Abstract

A single-frequency master-oscillator fiber power-amplifier operating at 1991 nm was demonstrated. The seeding laser was a diode-pumped, high efficient, single-longitudinal-mode Tm:YAP laser with a coupled-cavity configuration. 721 mW single-frequency output power was obtained at 1991 nm, the slope efficiency was 46%. The power amplifier was a diode-pumped Tm-doped fiber. 8.6 W single frequency output power was obtained from the amplifier. The maximum output power was limited by the low coupling efficiency of the seeding signal into the fiber core. The strength of ASE in the fiber amplifier with respect to the power of input signal was studied experimentally. High power single-frequency lasers at 2 μm optical region have potential applications on eye-safe coherent lidar and optical remote sensing.

Paper Details

Date Published: 10 November 2010
PDF: 7 pages
Proc. SPIE 7843, High-Power Lasers and Applications V, 784304 (10 November 2010); doi: 10.1117/12.871594
Show Author Affiliations
Jing Li, Beijing Institute of Technology (China)
Suhui Yang, Beijing Institute of Technology (China)
Changming Zhao, Beijing Institute of Technology (China)
Haiyang Zhang, Beijing Institute of Technology (China)
Wen Xie, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 7843:
High-Power Lasers and Applications V
Upendra N. Singh; Dianyuan Fan; Jianquan Yao; Robert F. Walter, Editor(s)

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