We demonstrate a thousand-fold enhancement of second-harmonic generation in an all-dielectric silicon nitride (SiN) resonant waveguide grating compared to a flat SiN film. The strong second-harmonic output measured at 532 nm results from the combination of the enhanced local fields in the nanostructure and the large second-order susceptibility of SiN. The second-harmonic conversion efficiency in the resonant structure is found to be of the order of , which is significantly larger than that typically observed from plasmonic metal nanostructures.
© 2012 Optical Society of AmericaFull Article | PDF Article
J. C. Quail and H. J. Simon
J. Opt. Soc. Am. B 1(2) 317-319 (1984)
J. P. Mondia, H. M. van Driel, W. Jiang, A. R. Cowan, and Jeff F. Young
Opt. Lett. 28(24) 2500-2502 (2003)
A. Saari, G. Genty, M. Siltanen, P. Karvinen, P. Vahimaa, M. Kuittinen, and M. Kauranen
Opt. Express 18(12) 12298-12303 (2010)