Sv. Zakharov et al., Sellmeier equation and conversion of the radiation of a repetitively pulsed tunable TEA CO2 laser into the second harmonic in a ZnGeP2 crystal, QUANTUM EL, 29(9), 1999, pp. 806-810
The results are reported of measurements of the spectral dependences of the
conversion efficiency and of the phase-matching angles in the conversion o
f the radiation of a repetitively pulsed TEA CO2 laser into the second harm
onic in ZnGeP2 crystals. The measured angular phase-matching curves are com
pared in the range 9.2-10.8 mu m with curves calculated on the basis of the
spectral dependences of the refractive indices for the ordinary and extrao
rdinary waves, for several Sellmeier coefficients. The Sellmeier coefficien
ts are in agreement with the measured values.