Abstract

We present measurements of the thermal behavior of the second-harmonic generation (SHG) phase-matching loci of deuterated l-arginine phosphate (dLAP) at a fundamental wavelength of 1.064 μm. These results clearly indicate the existence of temperature-insensitive phase-matching directions that possess large nonlinear couplings. To the best of our knowledge, this property of temperature-insensitive SHG phase-matching directions is uniqe to dLAP. Such behavior can greatly decrease thermal contributions to phase mismatch in high-average-power harmonic conversion.

© 1991 Optical Society of America

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