EFFICIENT CW SECOND HARMONIC GENERATION TO 2573 Å

Abstract

Efficient cw second harmonic conversion to 2573 Å has been achieved in an argon laser cavity by means of the nonlinear materials ADP and KDP. Peak SH power was 415 mW which represented 50% efficiency. Trace impurities in the crystals prevented the realization of theoretical efficiency. An increase in cavity loss was observed during the simultaneous presence of fundamental and SH beams.