We measure the nonlinear optical d coefficients of potassium titanyl phosphate relative to d11 of quartz and use these to calculate the effective coefficient deff for type-I phase matching. We compare the calculations with a variety of measurements and determine that the signs of the different d coefficients are all the same.
© 1997 Optical Society of America
Original Manuscript: October 30, 1996
Revised Manuscript: February 21, 1997
Published: August 20, 1997
Anton Anema and Theo Rasing, "Relative signs of the nonlinear coefficients of potassium titanyl phosphate," Appl. Opt. 36, 5902-5904 (1997)