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2-kW Average Power CW Phase-Conjugate Solid-State Laser

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9 Author(s)
Zakharenkov, Y.A. ; Raytheon Space & Airborne Syst., El Segundo ; Clatterbuck, T.O. ; Shkunov, V.V. ; Betin, A.A.
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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 continuous wave (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 an MOPA output power of 1.65 kW was 1.3 XDL.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 3 )