Using experiment data of laser damage threshold for ZnGeP₂ surface we have made calculations of dependence of different frequency generation efficiency from nonlinear crystal length for different values of sum laser intensity (up to 10 GW/cm²) corresponding to definite CO₂ laser types. Computation results showed that more 1-MW submillimeter power values are possible if to use sufficiently short powerful pump. These pulses are of considerable interest for many applications in matter investigations. Also we suggest to generate powerful laser half-cycle pulse at submillimeter wave region by means of difference frequency generation with ZnGeP₂ and by converted radiation reflection and absorption switch on semiconductor wafers.

Date Published: 5 January 1999
PDF: 6 pages
Proc. SPIE 3686, Laser Optics '98: Gas, Liquid, and Free-Electron Lasers, (5 January 1999); doi: 10.1117/12.335855

Published in SPIE Proceedings Vol. 3686:
Laser Optics '98: Gas, Liquid, and Free-Electron Lasers
Oleg B. Danilov, Editor(s)