Visible and mid-IR output using a fibre laser pump source

Beedell, James, Elder, Ian, Chen, Kang Kang, Alam, Shaif-ul, Richardson, David J. and Hand, Duncan (2009) Visible and mid-IR output using a fibre laser pump source. Titterton, David H. and Richardson, Mark A. (eds.) SPIE Security + Defence (7483) - Technologies for Optical Countermeasures VI, , Berlin. 31 Aug - 03 Sep 2009. (doi:10.1117/12.835443).

Abstract

Results are presented for generation of visible and mid-IR output using a common fibre-based laser pump source. This source comprised a master oscillator power amplifier (MOPA) configuration incorporating a semiconductor seed source. Operation in the nanosecond and picosecond range is possible via use of the appropriate seed source. The MOPA is capable of generating 100 W average power in an output beam with an M2 of 1.1. Here the MOPA was operated in the nanosecond regime, using 100 ns seed pulses at a pulse repetition frequency of 100 kHz. 40 W each of pump power was available for a frequency doubling and an OPO stage. 9.8 W of green light was generated in an output beam with an M2 of 1.2; using a degenerate PPLN OPO 12.7 W of broadband mid-IR output, with a FWHM linewidth in excess of 170 nm, was generated.

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Contributors

Author: David J. Richardson

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