Optical nonlinearity in mercury telluride

Wolff, P. A.; Yuen, S. Y.; Harris, K. A.; Cook, J. W.; Schetzina, J. F.
June 1987
Applied Physics Letters;6/29/1987, Vol. 50 Issue 26, p1858
Academic Journal
Mercury telluride is shown to have the largest known third-order nonlinear optic susceptibility with response time in the picosecond range. At 10.6 μm and T=300 K, χ(3)=1.6×10-4 esu. The response time, estimated from the dispersion of χ(3), is 5 ps. The effect is attributed to interband population modulation. It does not saturate below 1 MW/cm2.


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