Reflection and transmission of the interference wedge with nonlinear absorption

Elena V. Stoykova; Marin N. Nenchev

doi:10.1117/12.262922

27 December 1996 Reflection and transmission of the interference wedge with nonlinear absorption

Elena V. Stoykova, Marin N. Nenchev

Proceedings Volume 3052, Ninth International School on Quantum Electronics: Lasers--Physics and Applications; (1996) https://doi.org/10.1117/12.262922
Event: Ninth International School on Quantum Electronics: Lasers: Physics and Applications, 1996, Varna, Bulgaria

Abstract

In this work we explore the optical properties of a thin interferential wedge with a saturable absorber in the gap. The knowledge of wedge transmission as a function of nonlinear absorption in the gap is essential for creation of interferometric devices for direct control of high power light by light with many times lower power. Such devices exploit the fact that two light beams can penetrate in different ways in the interferometer gap. With a view to this, we consider the wedge illuminated by a high power beam falling quasinormally on the interferometer surface when the same gap region is simultaneously illuminated directly by the low power beam. To evaluate the dependence of transmission of the high power beam on the absorption, we propose a technique for calculating the nonlinear attenuation of multiple beams in the gap. The analysis of the wedge's behavior is made using the approach derived by as for restricted laser beam illumination of the assumption of truncated Gaussian amplitude distribution and uniform phase distribution. The cases of linear and nonlinear absorption, as well as saturation of the absorber as a function of variations of the low-power beam are analyzed.

Citation Download Citation

Elena V. Stoykova and Marin N. Nenchev "Reflection and transmission of the interference wedge with nonlinear absorption", Proc. SPIE 3052, Ninth International School on Quantum Electronics: Lasers--Physics and Applications, (27 December 1996); https://doi.org/10.1117/12.262922

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