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Refractive Index Measurements and New Sellmeir Coefficients of Zinc Germanium Phosphide From 2-9 Microns With Implications for Phase Matching in Optical Parametric Oscillators

Published online by Cambridge University Press:  10 February 2011

David E. Zelmon
Affiliation:
Air Force Research Laboratory, Materials Directorate, AFRL/MLPO, 3005 P St. Wright-Patterson AFB, OH 45433-7707
Elizabeth A. Hanning
Affiliation:
Air Force Research Laboratory, Materials Directorate, AFRL/MLPO, 3005 P St. Wright-Patterson AFB, OH 45433-7707
Peter Schunemann
Affiliation:
Sanders, A Lockheed Martin Company, MER 15-1813, PO Box 868 Nashua, NH 03061-0868
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Abstract

Recent experiments in mid IR frequency conversion have revealed that older Sellmeir models for zinc germanium phosphide are inadequate. Erroneous predictions in phase matching angles based on older refractive index data have resulted in compromised device performance. We have conducted a complete study of the refractive indices of zinc germanium phosphide from 2 to 9 microns and calculated new Sellmeir coefficients. We have used these to explain the results of recent experiments with mid IR optical parametric oscillators. The phase matching calculations based on our new refractive index data predict much more closely the results of several different mid IR frequency conversion experiments.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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