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26 February 2007 Multichannel eye-safe fiber laser system
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Abstract
We report on the development of a multi-channel all-fiber based laser system for LADAR applications. Two design pathways for the multi-channel laser system were investigated: (i) multiple externally triggered single channel MOPA (SCMOPA) systems and (ii) a single master-oscillator/multiple power-amplifier (SMOMPA) system. We designed and tested a single channel MOPA system that consists of a seed source, two single mode amplifiers and a power amplifier. With this system we were able to achieve up to 195&mgr;J/pulse at 6kHz with a pulse duration of 3ns. For evaluating the SMOMPA approach we built a bread board based on the single channel results with one master oscillator and 4 power amplifiers. With this breadboard we achieved pulse energies from each of the four power amplifiers of 120±4&mgr;J at 6kHz and 78-90&mgr;J at 18kHz. The temporal line-shapes emitted from each power amplifier were identical within the signal-to-noise level of the temporal traces and have a FWHM=2.2ns.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Matthias Savage-Leuchs, Jason Henrie, Eric Eisenberg, and Mark S. Bowers "Multichannel eye-safe fiber laser system", Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 64530V (26 February 2007); https://doi.org/10.1117/12.703212
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