ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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8
Issue
vol 60 / AUGUST, 2017
Article
UDC 535.54

NONLINEAR-OPTICAL METHOD FOR MEASURING SPHERICAL ABERRATION OF GERMANIUM LENSES IN THE INFRARED

A. I. Illarionov
Irkutsk State University of Railway Transport, Department of Physics; Professor


M. S. Ivanov
Zabaikalsky Institute of Railway Transport, Chita, Branch of Irkutsk State University of Railway Transport, Department of Vital Activity Safety and Engineering Environmental Protection; Post-Graduate Student


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Abstract.   A method is presented for determination of spherical aberration of various germanium lenses in IR. The spherical aberration value is evaluated on the base of data on spatial-angular structure of second optical harmonic.
Keywords: second harmonic, spherical aberration, spatial-angular structure, IR radiation