Refractive-index measurements and Sellmeier coefficients for zinc germanium phosphide from 2 to 9 mu m with implications for phase matching in optical frequency-conversion devices
De. Zelmon et al., Refractive-index measurements and Sellmeier coefficients for zinc germanium phosphide from 2 to 9 mu m with implications for phase matching in optical frequency-conversion devices, J OPT SOC B, 18(9), 2001, pp. 1307-1310
Recent experiments in mid-IR frequency conversion reveal that older Sellmei
er models for zinc germanium phosphide are inadequate for predicting phase-
matching loci in zinc germanium phosphide optical frequency-conversion devi
ces. This results in compromised device performance. We conduct a complete
study of the refractive indices of zinc germanium phosphide from 2 to 9 mum
and calculate new Sellmeier coefficients. The phase-matching calculations
based an our new refractive-index data predict much more closely the result
s of several different mid-IR frequency-conversion experiments. (C) 2001 Op
tical Society of America.