Abstract
We obtained 0.5 W UV output at 289 nm, from a 2 W 1064 nm diode-pumped Nd:YAG laser, operating at 80 Hz p.r.f.. The heart of this system was a non-critically phase-matched LBO sum-mixing crystal, which was used to sum the outputs of a 1580-1590 nm KTP OPO and 355 nm LBO tripling crystal. The overall optical conversion efficiency of 1064 nm to 289 nm was 30%. We believe that the high efficiency of this device is due primarily to non-critical phase-matching.
© 1994 Optical Society of America
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