Nonlinear interface switching in carbon microparticle suspensions

Robert R. Michael Jr.; Christopher M. Lawson

doi:10.1117/12.138067

18 August 1992 Nonlinear interface switching in carbon microparticle suspensions

Robert R. Michael Jr., Christopher M. Lawson

Proceedings Volume 1692, Nonlinear and Electro-Optic Materials for Optical Switching; (1992) https://doi.org/10.1117/12.138067
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

We have investigated self-switching mechanisms in carbon microparticle suspensions. A dominant nonlinear switching mechanismin the majority ofthese samples is laserinduced cavitation which leads to total internal reflection (TIR) switching. Nonlinear reflectivities up to 90% were measured using frequency doubled, single 5ns Nd:YAG laser pulses. The fraction of energy that is not switched via 'HR undergoes additional nonlinear attenuation by nonlinear plasma scattering. We have also developed a technique for avoiding laser induced degradation of the nonlinear interface at high laser pulse energies. A simple model which may be used in the optimization of this technique is discussed.

Citation Download Citation

Robert R. Michael Jr. and Christopher M. Lawson "Nonlinear interface switching in carbon microparticle suspensions", Proc. SPIE 1692, Nonlinear and Electro-Optic Materials for Optical Switching, (18 August 1992); https://doi.org/10.1117/12.138067

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