Abstract

The sphere method is used for the direct measurement of sum- and difference-frequency generation phase matched in the principal planes of ${\mathrm{KTiOAsO}}_4,\hspace{0.5em}{\mathrm{RbTiOAsO}}_4,$ and ${\mathrm{CsTiOAsO}}_4,$ including the tuning curves of 1.064-µm-pumped OPO’s emitting between 3 and 5 µm. The nonlinear least-squares fitting of our experimental data leads to refined dispersion equations of the principal refractive indices; the resulting dual-oscillator form equations are valid over the complete transparency range of the three studied materials.

© 2000 Optical Society of America

Rubidium titanyl arsenate difference-frequency generation and validation of new Sellmeier coefficients

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