We use the separated-beams, second-harmonic method to measure the full second-order nonlinear optical tensor of KNbO3 relative to dzxy of KDP for a fundamental wavelength of 1064 nm. Assuming dzxy(KDP)= 0.39 pm/V, we find for KNbO3 that dxxx=21.9 pm/V, dxyy=8.9 pm/V, dxzz=12.4 pm/V, dyxy= 9.2 pm/V, and dzxz=13.0 pm/V with estimated uncertainties of ±2–5%.
© 2003 Optical Society of America
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
Michael V. Pack, Darrell J. Armstrong, and Arlee V. Smith, "Measurement of the χ(2) tensor of the potassium niobate crystal," J. Opt. Soc. Am. B 20, 2109-2116 (2003)