Abstract
We report an efficient, visible, nanosecond optical parametric generator of periodically poled lithium niobate pumped at 532 nm by a frequency-doubled, diode-pumped, passively -switched, single-mode Nd:YAG laser with pulse energy. The signal radiation is tunable from 637 to 593 nm. The maximum signal-conversion efficiency is 23%. Optical parametric amplification of a He–Ne laser at 632.8 nm is also studied.
© 1999 Optical Society of America
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