ZnGeP2 has been found to be phase matchable for type-1 second-harmonic generation of a CO2 laser to as high as 10.78 µm at 20.0 °C. The Sellmeier equations and nonlinear optical constant of this crystal are reported.
© 1997 Optical Society of America
Original Manuscript: May 29, 1996
Revised Manuscript: September 24, 1996
Published: April 20, 1997
Kiyoshi Kato, "Second-harmonic and sum-frequency generation in ZnGeP2," Appl. Opt. 36, 2506-2510 (1997)