Efficient second harmonic generation in ZnO nanorod arrays with broadband ultrashort pulses

Das, Susanta Kumar; Bock, Martin; O'Neill, Christopher; Grunwald, Ruediger; Lee, Kyung Moon; Lee, Hwang Woon; Lee, Soonil; Rotermund, Fabian
November 2008
Applied Physics Letters;11/3/2008, Vol. 93 Issue 18, p181112
Academic Journal
Broadband frequency-doubling properties of c-axis oriented zinc oxide (ZnO) nanorod arrays grown by low-temperature chemical bath method on glass substrate were studied. The maximum effective nonlinearity was found to be about 7.5 times higher than that of a type-I beta-barium borate crystal for a pump intensity of 5.5×1010 W/cm2. The angular dependence of second harmonic generation (SHG) was determined experimentally. The measured spectral profile of SHG was found to be in good agreement with theoretical simulations.


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