Three-wave nonlinear interactions in KTioPo4 (KTP) and KTP isomorphs. Final report, May-September 1993
This document reports an investigation of three-wave interactions in positive (nonlinear) biaxial crystals-specifically, the crystal KTiOPO4 (KTP) and its crystallographic isomorphs: RbTiOPO4 (RTP), KTiOAsO4 (KTA), RbTiOAsO4 (RTA), and CsTiOAsO4 (CTA). The results are characterized in terms of phase matching angles, effective nonlinear coefficients, and walkoff angles for the optical beams. In phase matching angles, RTP and CTA showed larger variations in theta (i.e., were more birefringent) than the other isomorphs (which were more uniaxial-like). Where KTP did not have the largest d (eff) the difference from the isomorph which did was typically no more than 0.7 pm/V. Although overall walkoff was less than 3 deg for all isomorphs; the arsenates had around half the walkoff of the phosphates. Strictly from a performance characteristics basis, for uses at wavelengths less than 2.75 microns there is little reason to select one of the other isomorphs over KTP. RTP is acceptable for OPO usage to 3.17 microns, though an arsenate, CTA, is a better choice (higher d (eff) less walkoff, and negligible absorption). Above 3.2 microns, the arsenates, with their smaller walkoff angles and minimal absorption losses, are considerably better choices than the phosphates. Nonlinear optics, Nonlinear frequency conversion, Lasers, Infrared.
- Research Organization:
- Wright Lab., Wright-Patterson AFB, OH (United States)
- OSTI ID:
- 5437604
- Report Number(s):
- AD-A-274079/3/XAB; WL-TR-93-5029
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CRYSTALS
COMPARATIVE EVALUATIONS
POTASSIUM PHOSPHATES
OPTICAL PROPERTIES
TITANIUM PHOSPHATES
ARSENATES
CESIUM COMPOUNDS
CRYSTAL STRUCTURE
LASER MATERIALS
NONLINEAR OPTICS
RUBIDIUM COMPOUNDS
ALKALI METAL COMPOUNDS
ARSENIC COMPOUNDS
EVALUATION
MATERIALS
OPTICS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360606* - Other Materials- Physical Properties- (1992-)
360602 - Other Materials- Structure & Phase Studies