Abstract
Second harmonic generation (SHG) conversion efficiency of Nd:GdCOB crystal is reported. Theoretical calculation has shown that the largest effective nonlinear coefficient is not in the principal plane. The SHG experimental results of samples cut in the phase-matching direction of θ=66.3°, φ=134.4° and θ=90°, φ=46° are presented. The self-frequency doubling laser performance of the two samples is investigated.
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