Accession Number : AD0634245

Title :   DISTRIBUTION OF PUMPING RADIATION DENSITY IN A TRIHEDRAL ROD,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Rutkovskii, F. K. ; Guryanova,T. K.

Report Date : 20 MAY 1966

Pagination or Media Count : 7

Abstract : The distribution of pump radiation density in a regular trihedral prism laser resonator is investigated by the methods of geometrical optics, using an expression derived previously for a rectangular prism. The problem of determining the path of a multiply reflected beam is set up geometrically for handling by a computer. Conditions under which the relative pumping density differs from zero are derived in terms of the Fresnel reflection coefficients of the rod, and are shown graphically as functions of reflectivity and location within the rod. The pumping density is uniformly distributed for zero reflectivity and decreases toward the center of the rod for finite reflectivity. An expression is given for the ratio of energy absorbed in the rod to incident energy. (Author)

Descriptors :   (*LASERS, OPTICAL PUMPING), (*OPTICAL PUMPING, DISTRIBUTION), PRISMS(OPTICS), LIGHT, DENSITY, REFLECTION, ENERGY, RODS, USSR

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE