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

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