Surface enhancement of the second harmonic generation on the GaAs-Al interface by the s-polarized fundamental wave

Chen, Zhenghao; Cui, Dafu; Zhou, Yueliang; Lu, Huibin; Yang, Guozhen; Gu, Shijie
October 1987
Applied Physics Letters;10/26/1987, Vol. 51 Issue 17, p1301
Academic Journal
The theoretical and experimental results demonstrate, for the first time, that the enhancement of the reflected surface second harmonic generation on the rough GaAs-Al interface arises from the nonlinear resonant excitation of the harmonic surface polariton mode with s-polarized incident radiation. The experimental results agree quite well with the theoretical analysis. An optimum surface second harmonic enhancement of ∼three orders of magnitude has been obtained.


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