First-principles study on linear and nonlinear optical properties of ZnGeP<sub>2</sub><xref ref-type="fn" rid="cpb141806fn1">*</xref>

First-principles study on linear and nonlinear optical properties of ZnGeP₂*

Xiao Rui-Chun^a),^b), Wu Hai-Xin^a)†, Ni You-Bao^a), Wang Zhen-You^a), Huang Chang-Bao^a),^b), Cheng Xu-Dong^a),^b)

(a) Calculated, phonon-corrected and experimental refractive dispersion curves of ZnGeP₂, (b) phonon-corrected calculation birefringence curve of ZnGeP₂. Experimental data are taken from Ref. [ 25 ].