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21 February 2007 2-kW average power phase-conjugate master oscillator power amplifier
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Abstract
We have demonstrated stable operation of a 2-kW Yb:YAG phase-conjugate master oscillator, power amplifier (PC-MOPA) laser system with a loop phase-conjugate mirror (LPCM). This is the first demonstration of a CW-input LPCM MOPA operating at a power greater than 1 kW with a nearly diffraction-limited output beam. The single-pass beam quality incident on the LPCM varied with the specific operating conditions, but it was typically ~ 20 times diffraction-limited (XDL). The measured beam quality with a MOPA output power of 1.65 kW was 1.3 XDL.
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Yuri A. Zakharenkov, Todd O. Clatterbuck, Vladimir V. Shkunov, A. A. Betin, Dave M. Filgas, Eric P. Ostby, Friedrich P. Strohkendl, D. A. Rockwell, and Rob S. Baltimore "2-kW average power phase-conjugate master oscillator power amplifier", Proc. SPIE 6454, High Energy/Average Power Lasers and Intense Beam Applications, 64540F (21 February 2007); https://doi.org/10.1117/12.701419
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