Abstract

The radial distribution of the pump energy absorbed within a ruby rod when pumped by a helical flash-tube is experimentally measured. The measurement is performed by taking near-field pictures of the emission pattern of the red fluorescence of the ruby. The emission pattern in this case is a visual reproduction of the energy absorbed at each point of the rod. The following three cases are considered: (a) ruby rod in air, (b) ruby rod covered by a cylindrical sheath of water, and (c) ruby rod covered by a cylindrical sheath of benzyl benzoate. The influence of the ground-state depopulation due to the pumping on the radial distribution is also studied. Experimental curves for the energy density are compared with theoretical curves obtained from the theory developed in a previous paper. The agreement is fairly good, the theoretical curves not differing from the experimental ones by more than 20%.

© 1964 Optical Society of America

High-Index-of-Refraction Spherical Sheath Composite-Rod Optical Masers

O. Svelto and M. Di Domenico
Appl. Opt. 2(4) 431-439 (1963)

Pumping Energy Distribution in Ruby Rods

John G. Skinner
Appl. Opt. 3(8) 963-965 (1964)

Distribution of Absorbed Power in a Side-Pumped Ruby Rod

Charlie H. Cooke, James McKenna, and John G. Skinner
Appl. Opt. 3(8) 957-961 (1964)

Ē-Level Population of Ruby vs Pumping

V. Daneu, C. A. Sacchi, and O. Svelto
Appl. Opt. 4(7) 863-866 (1965)

Interdependence of Threshold, Filament Position, and Efficiency in a Linearly Pumped Ruby Rod

Eugene W. Sucov
Appl. Opt. 4(5) 593-596 (1965)