Abstract
KTiOPO4 (KTP) possesses a unique combination of properties making it useful for a variety of bulk and waveguide nonlinear optical applications.1 Spatially well-defined waveguide and domain structures are readily produced in crystals through ion exchange techniques.2,3 Highly efficient second harmonic generation into the blue wavelength range is achieved in KTP using quasi-phase matching in segmented/domain-inverted waveguides.4 Recently, results have been reported indicating that there are power limitations or instabilities which occur when quasi-phase matching into the blue using KTP.5 However, the transmission characteristics of conventional KTP waveguides have been reported to be stable at 514 and 488 nm to high powers.6
© 1993 Optical Society of America
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