Compact, highly efficient, athermal, 25W, 2051nm Tm-fiber based MOPA for CO2 trace-gas laser space transmitter

Doruk Engin; Ti Chuang; Mark Storm

doi:10.1117/12.2250516

22 February 2017 Compact, highly efficient, athermal, 25W, 2051nm Tm-fiber based MOPA for CO₂ trace-gas laser space transmitter

Doruk Engin, Ti Chuang, Mark Storm

Author Affiliations +

Proceedings Volume 10083, Fiber Lasers XIV: Technology and Systems; 1008325 (2017) https://doi.org/10.1117/12.2250516
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

A cladding-pumped polarization maintaining (PM) Thulium (Tm) fiber–based amplifier optimized for high efficiency and high power operation at 2051 nm is presented. The two-stage amplifier has been demonstrated to achieve 25 W average power, >16 dB polarization extinction ratio (PER) out of a single-mode PM fiber using a <500 kHz linewidth Jet Propulsion Laboratory (JPL) distributed feedback (DFB) laser^1-3 and 43 dB gain. The power amplifier’s optical conversion efficiency is 53%. An internal efficiency of 58% is calculated after correcting for passive losses. The two-stage amplifier sustains its highly efficient operation for a temperature range of 5-40°C. The absence of stimulated Brillouin scattering (SBS) for the narrow linewidth amplification shows promise for further power scaling.

Citation Download Citation

Doruk Engin, Ti Chuang, and Mark Storm "Compact, highly efficient, athermal, 25W, 2051nm Tm-fiber based MOPA for CO₂ trace-gas laser space transmitter", Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 1008325 (22 February 2017); https://doi.org/10.1117/12.2250516

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