We have determined all the three independent components of quadratic nonlinear-optical coefficients of ZnO by highly accurate Maker-fringe measurements on high-quality bulk samples combined with theoretical analyses taking account of the multiple-reflection effects. The obtained values of quadratic nonlinear-optical coefficients are d31=2.0±0.1 pm/V, d15=2.1±0.1 pm/V, and d33=−6.2±0.3 pm/V at the fundamental wavelength of 1.06 μm. This shows that the ratio d33/d31, which is estimated to be −3.0, is deviated from the widely used value of −2 predicted for idealized wurtzite crystal.
© 2012 Optical Society of America
Original Manuscript: March 30, 2012
Revised Manuscript: July 17, 2012
Manuscript Accepted: July 17, 2012
Published: August 10, 2012
Makoto Abe, Naoki Awata, Tomonori Matsushita, Masashi Hakamata, Kenji Ozawa, Ryota Murakami, Ichiro Shoji, and Takashi Kondo, "Accurate measurement of quadratic nonlinear-optical coefficients of zinc oxide," J. Opt. Soc. Am. B 29, 2392-2396 (2012)