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