Measurement of second-order nonlinear optical coefficients of BaMgF_4

Abstract

The three independent second-order nonlinear optical coefficients of ${\mathrm{BaMgF}}_4$ are determined by the Maker fringe method with a nanosecond pulsed Nd:YAG laser at 1064 nm wavelength. All the results are relative to the reference crystal congruent ${\mathrm{LiNbO}}_3$. The largest element in a second-order nonlinear optical matrix of ${\mathrm{BaMgF}}_4$ is $d_{32}$, with the value of $0.36\mathrm{pm}/\mathrm{V}$.