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Nonresonant Nonlinear Absorption in n-Ge, GaAs, and ZnSe in the Long-wave Infrared (JW6A.15)

Presenter: Daniel Matteo, University of California Los Angeles

We measure nonlinear absorption in semiconductors using nanosecond and picosecond CO2 laser pulses. Absorption strength scales inversely with band gap energy. Effective absorption coefficients in n-Ge are unchanged over intensities from 0.1-2 GW/cm2.

Authors:Daniel Matteo, University of California Los Angeles / Jeremy Pigeon, University of California Los Angeles / Sergei Tochitsky, University of California Los Angeles / Ilan Ben-Zvi, Stony Brook University / Chan Joshi, University of California Los Angeles


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