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2006•Optics and Precision EngineeringRequires access

Theoretical design of nanosecond near infrared KTP optical parametric oscillator

Miao Jieguang, Tan Hui-ming

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Abstract

A general theoretical design of nanosecond near infrared KTP optical parametric oscillator was presented.Based on the calculation and discussion on the phase-matching,walk-off angle,acceptance angle and effective nonlinear coefficient for the KTP crystal,and on the numerical simulations of the angle-tuning curve and gain curve,the tuning spectrum and cutting angle of the KTP was finally established as 1.35 ~2.0 μm and 59.6°,respectively.At the same time,the impact of the crystal length,walk-off angle and the output coupler's reflectivity on the threshold of a Optical Parametric Oscillator(OPO) was analyzed.Besides,several methods of reducing the OPO threshold were summed up.

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What this paper is about

A general theoretical design of nanosecond near infrared KTP optical parametric oscillator was presented.Based on the calculation and discussion on the phase-matching,walk-off angle,acceptance angle and effective nonlinear coefficient for the KTP crystal,and on the numerical simulations of the angle-tuning curve and gain curve,the tuning spectrum and cutting angle of the KTP was finally established as 1.35 ~2.0 μm and 59.6°,respectively.At the same time,the impact of the crystal length,walk-off angle and the output coupler's reflectivity on the threshold of a Optical Parametric Oscillator(OPO) was analyzed.Besides,several methods of reducing the OPO threshold were summed up.

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Available abstract

A general theoretical design of nanosecond near infrared KTP optical parametric oscillator was presented.Based on the calculation and discussion on the phase-matching,walk-off angle,acceptance angle and effective nonlinear coefficient for the KTP crystal,and on the numerical simulations of the angle-tuning curve and gain curve,the tuning spectrum and cutting angle of the KTP was finally established as 1.35 ~2.0 μm and 59.6°,respectively.At the same time,the impact of the crystal length,walk-off angle and the output coupler's reflectivity on the threshold of a Optical Parametric Oscillator(OPO) was analyzed.Besides,several methods of reducing the OPO threshold were summed up.

Key concepts: Optical parametric oscillator, Nanosecond, Optics, Parametric statistics, Crystal (programming language), Infrared, Materials science, Laser

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