Second-harmonic generation from a single wurtzite GaAs nanoneedle

Chen, Roger; Crankshaw, Shanna; Tran, Thai; Chuang, Linus C.; Moewe, Michael; Chang-Hasnain, Connie
February 2010
Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p051110
Academic Journal
We report and characterize second-harmonic generation from a single wurtzite GaAs nanoneedle. The wurtzite crystal structure of the nanoneedle relaxes the strict nonlinear selection rules of normal zincblende GaAs while maintaining its strong nonlinear optical coefficients. The ability to grow GaAs nanoneedles without catalysts on (111) Si makes them particularly attractive as nonlinear optoelectronic media compatible with complementary metal-oxide-semiconductor technology.


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