Nonlinear Optical Effects In KNbO3 Crystals At AlxGa1_xAs, Dye, Ruby And Nd:YAG Laser Wavelengths.

J.-C. Baumert; J. Hoffnagle; P. Gunter

doi:10.1117/12.943728

27 March 1985 Nonlinear Optical Effects In KNbO₃ Crystals At Al_xGa₁__xAs, Dye, Ruby And Nd:YAG Laser Wavelengths.

J.-C. Baumert, J. Hoffnagle, P. Gunter

Proceedings Volume 0492, 1984 European Conf on Optics, Optical Systems, and Applications; (1985) https://doi.org/10.1117/12.943728
Event: 1984 European Conference on Optics, Optical Systems and Applications, 1984, Amsterdam, Netherlands

Abstract

Potassium niobate (KNb03) is well suited for efficient frequency doubling of near infrared laser light, due to its large nonlinear optical coefficients, d32 = (18.3 ± 0.3)pm/V and d31 = (15.8 ± 0.3)pm/V at λ = 1064 nm, and the possibility of noncritical 90° Type I phase-matching. Tunable second harmonic generation (λ = 420 to 475 nm) from low power (5 to 100 mW) cw and pulsed AlxGai_xAs and dye lasers has been demonstrated. Higher conversion efficiencies have been achieved by intracavity frequency doubling of a cw dye laser operating at wave-lengths around λ = 860 nm. The second harmonic of a pulsed Styryl-9 dye laser and a mode-locked Nd:YAG laser could be generated with efficiencies as high as 28% and 32% respectively. Efficient 90° phase-matched sum frequency generation of a Nd:YAG signal (λ = 1064 nm) and a ruby pump wave (λ = 694.3 nm) has been demonstrated. New accurate measurements of the non-linear optical coefficients of KNb03 at the wavelengths 1064 nm and 826 nm are presented.

Citation Download Citation

J.-C. Baumert, J. Hoffnagle, and P. Gunter "Nonlinear Optical Effects In KNbO₃ Crystals At Al_xGa₁__xAs, Dye, Ruby And Nd:YAG Laser Wavelengths.", Proc. SPIE 0492, 1984 European Conf on Optics, Optical Systems, and Applications, (27 March 1985); https://doi.org/10.1117/12.943728

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