Walk-off correction in biaxial crystals

H-C. Lee; H. E. Meissner

doi:10.1117/12.737423

15 November 2007 Walk-off correction in biaxial crystals

H-C. Lee, H. E. Meissner

Proceedings Volume 6740, Optical Materials in Defence Systems Technology IV; 674009 (2007) https://doi.org/10.1117/12.737423
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

A comprehensive model has been developed to construct phase matching conditions, including Poynting vector directions, parametrically interacting beam wavelengths, relative walk-off angles and polarization states in a biaxial nonlinear single crystal with known refractive index dispersion. The model optimizes phase matching conditions by providing a strategy for walk-off compensation that determines the optimum periodicity of twist-twin Adhesive-Free Bond (AFB(R)) composite pair designs. The model is validated experimentally by measuring the calculated walk-off angles and the crystal orientation of KTP that correlates to the given Poynting vector. The method is useful in reducing uncertainties of OPO designs, in providing walk-off compensation design data, and in confirming the final walk-off corrected design configuration. It is generally applicable to biaxial and uniaxial nonlinear crystals.

Citation Download Citation

H-C. Lee and H. E. Meissner "Walk-off correction in biaxial crystals", Proc. SPIE 6740, Optical Materials in Defence Systems Technology IV, 674009 (15 November 2007); https://doi.org/10.1117/12.737423

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