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Conferences > PEMD > 2001 > PQW > 423

Simultaneous Measurement of Absorption and Phase Gratings in GaAs Photorefractive Quantum Wells

R. Ramos-Garcia, K. Nakawaga, D. Nolte, and M.R. Melloch

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Abstract

We apply a periodically phase modulated two-wave mixing technique to obtain simultaneously the absorption and refractive index contributions to the diffraction efficiency. The technique allows us to measure the amplitude and phase of the refractive and absorption index changes, and therefore their relative contributions to the diffraction efficiency with high sensitivity.

© 2001 Optical Society of America

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