High-average-power, long-pulse-length solid-state illuminator laser for high-resolution imaging

Summary form only given. We have recently reported a laser amplification technique that allows pulses of up to 1 /spl mu/s in duration to be efficiently generated from a master oscillator power amplifier (MOPA) geometry. The incorporation of very low threshold SBS phase conjugation using Brillouin-e...

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Bibliographic Details
Main Authors: Dane, C.B., Telford, S., Norton, M.A., Wintemute, J.D., Manning, W.L., Bhachu, B., Hackel, L.A.
Format: Conference Proceeding
Language:English
Subjects:
High-resolution imaging
Optical pulse generation
Oscillators
Power amplifiers
Power generation
Power lasers
Pulse amplifiers
Pump lasers
Solid lasers
Solid state circuits
Online Access:Request full text
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Summary:Summary form only given. We have recently reported a laser amplification technique that allows pulses of up to 1 /spl mu/s in duration to be efficiently generated from a master oscillator power amplifier (MOPA) geometry. The incorporation of very low threshold SBS phase conjugation using Brillouin-enhanced four wave mixing provides near-diffraction limited divergence and the output pulses can be frequency-doubled to 527 nm with >50% total external conversion efficiency. We have applied this technology to a high-average-power laser system designed as an illuminator for high-resolution speckle imaging (HRI) of distant objects through the turbulent atmosphere. The laser incorporates four flash lamp pumped Nd:glass zig-zag laser amplifers.