2-μm 5-kHz PM DFB-FBG fiber seed laser in ns pulsed Tm-doped fiber amplifier

Wiktor T. Walasik; Robert E. Tench; Alexandre Amavigan; Jean-Marc Delavaux; Andre Van Rynbah

doi:10.1117/12.2585926

12 April 2021 2-μm 5-kHz PM DFB-FBG fiber seed laser in ns pulsed Tm-doped fiber amplifier

Wiktor T. Walasik, Robert E. Tench, Alexandre Amavigan, Jean-Marc Delavaux, Andre Van Rynbah

Proceedings Volume 11739, Fiber Optic Sensors and Applications XVII; 1173909 (2021) https://doi.org/10.1117/12.2585926
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

Coherent nanosecond pulses with high peak powers in the 2μm region are in demand for applications such as LIDAR and atmospheric sensing. In this paper we present a PM pulsed laser based on a MOPA configuration providing up to 50W of peak power. The 2039nm seed laser is a pre-amplified DFB-FBG laser with <10kHz linewidth. Nanosecond pulses produced by an acousto-optic modulator are amplified by a single booster stage amplifier using a double clad PM thulium-doped fiber. We demonstrate >10W of output peak power for 50ns pulses over repetition rates from 50kHz to 2MHz. For 4-μs pulses and a repetition rate of 50kHz, our MOPA delivers 28μJ of pulse energy.

Conference Presentation

Citation Download Citation

Wiktor T. Walasik, Robert E. Tench, Alexandre Amavigan, Jean-Marc Delavaux, and Andre Van Rynbah "2-μm 5-kHz PM DFB-FBG fiber seed laser in ns pulsed Tm-doped fiber amplifier", Proc. SPIE 11739, Fiber Optic Sensors and Applications XVII, 1173909 (12 April 2021); https://doi.org/10.1117/12.2585926

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