Abstract

The properties of large flux grown KTiOPO₄ second harmonic generators were measured. A technique which provides a sensitive assessment of crystal uniformity is described. Optically perfect second harmonic generation crystals of up to 1 cm³ were found to have nonlinear optical properties comparable with those grown by other methods. A Q-switched Nd:YAG laser was used to determine temperture acceptance width-length product (20°C · cm), angular acceptance width-length product (13 mrad · cm), and doubling efficiency (50%). Spectral bandwidth (4.5 Å · cm) and wavefront distortion (¼ wave at 633 nm) were also measured. The dependence of these properties on crystal homogeneity is demonstrated.

© 1988 Optical Society of America

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