Abstract
In recent years there has been increasing interest in the use of quasi-phase-matched periodically poled lithium niobate (PPLN) for a variety of frequency conversion applications.1 However, the performance of QPM devices using PPLN has been limited for operation at high peak powers because of difficulty in forming gratings in samples thicker than I mm, and at high average power in the visible without resort to operation at high temperatures because of the onset of output beam distortion at high light intensity.
© 2000 Optical Society of America
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