Abstract

Classical coherence theory as presented by Wolf with the modification proposed by Neugebauer is used to describe mathematically and experimentally the collimation and focusing of the time-averaged intensity of pulsed multimode laser radiation. Measurements of the double-slit Fraunhofer pattern and the near and far zone intensity patterns were made on two pulsed ruby lasers by both still and streak photography to examine the spatial coherence and the collimation of the beam. Our result showed that the time-averaged collimation and focusing characteristics of the beam can be treated as the superposition of noncoupled spatially coherent modes.

© 1965 Optical Society of America

Microwave Measurements of Partially Coherent Fields

J. L. Poirier, W. Rotman, and R. A. Shore
Appl. Opt. 4(10) 1321-1328 (1965)

Effect of Trapped Light on the Output of a Ruby Laser

J. Linn and J. Free
Appl. Opt. 4(9) 1099-1101 (1965)

Evaluation of Specially Grown Ruby Laser Rods

E. W. Sucov
Appl. Opt. 4(9) 1107-1112 (1965)

Optical Properties and Laser Thresholds of Thirty-nine Ruby Laser Crystals

G. W. Dueker, C. M. Kellington, M. Katzmann, and J. G. Atwood
Appl. Opt. 4(1) 109-118 (1965)

Beam Characteristics of Ruby Optical Masers

T. S. Jaseja, M. K. Dheer, and D. Madhavan
Appl. Opt. 4(12) 1643-1647 (1965)