26 February 2018 Compact 1 mJ fiber MOPA for space-based laser-ablation resonant ionization mass spectrometry (LARIMS)
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Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 1051211 (2018) https://doi.org/10.1117/12.2295454
Event: SPIE LASE, 2018, San Francisco, California, United States
Abstract
A 1064 nm, 1 mJ pulsed fiber MOPA module, housed in 16”x14”x2.5” package for application in a lunar and planetary in-situ surface dating instrument is demonstrated. The module is based on a three-stage MOPA with a 60 μm core tapered fiber terminal amplifier. The master oscillator and first two preamplifier stages, which generate 20 μJ pulses, are all contained on a 13”x11”x1” board. Several improvements to the electronic signal control were instrumental to the laser development, including bipolar drive of the phase modulator for SBS suppression, shaping of the seed pulse to compensate pulse steepening, and pulsed operation of the power amplifier pump to reduce spontaneous emission at low pulse repetition frequency. The packaged laser runs at a repetition rate of 10 kHz and generates 10 ns pulses at 1 mJ with a 40 GHz linewidth, an M2 ~ 1.2 beam quality, and an 18 dB polarization extinction ratio. The modular design enables seven independent lasers to be stacked in a 20”x18”x16.25” enclosure, supporting a path towards a fiber laser based LARIMS for advanced materials characterization and chronological dating in harsh and remote environments.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiaodong Mu, Xiaodong Mu, William Crain, William Crain, Can Nguyen, Can Nguyen, Pavel Ionov, Pavel Ionov, Paul Steinvurzel, Paul Steinvurzel, Yaniv Dotan, Yaniv Dotan, Petras Karuza, Petras Karuza, William Lotshaw, William Lotshaw, Todd Rose, Todd Rose, Steven Beck, Steven Beck, F. Scott Anderson, F. Scott Anderson, "Compact 1 mJ fiber MOPA for space-based laser-ablation resonant ionization mass spectrometry (LARIMS)", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 1051211 (26 February 2018); doi: 10.1117/12.2295454; https://doi.org/10.1117/12.2295454
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