Abstract
A compact tunable UV laser source based on intracavity sum frequency generation in a MgO-doped periodically-poled stoichiometric lithium tantalate optical parametric oscillator is reported. UV output at an level of power over the range of 364 to with a bandwidth of was obtained with a crystal that has just one periodically-poled grating period. The full tuning range can be as much as , from 324 to by varying the crystal temperature from room temperature to . This will cover nearly the entire UVA range.
© 2008 Optical Society of America
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