Abstract
We have investigated the nonlinear optical properties of CdS with a Q-switched frequency doubled Nd-Yag laser (λ=532nm) with photon energies just below the energy gap of CdS at room temperature.
Our results indicate that the nonlinearity in CdS is the absorption process, where the incident laser pulse generates carriers from the valence band to the conduction band in the CdS semiconductor. At high laser intensities these carriers will form an electron-hole plasma which changes the optical properties of CdS.
We use this nonlinear effect to observe: (1) Optical phase conjugation by four-wave mixing, (2) Laser-induced grating, (3) Self-defocusing of Gaussian laser beams, and (4) Nonlinear Fabry-Perot action.
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References
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© 1987 Springer-Verlag Berlin Heidelberg
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Petersen, P.M. (1987). Self-induced Changes in the Refractive Index in CdS at λ = 532 nm. In: Günter, P. (eds) Electro-optic and Photorefractive Materials. Springer Proceedings in Physics, vol 18. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-71907-3_26
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DOI: https://doi.org/10.1007/978-3-642-71907-3_26
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-71909-7
Online ISBN: 978-3-642-71907-3
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