Brief Communications

Degree of spatial coherence of single-mode laser radiation

B. Ya. Zel'dovich, D. B. Saakyan


Abstract: The assumption of subthreshold noise excitation of modes with higher transverse indices is used in theoretical estimates of the degree of spatial coherence of the radiation generated in a laser emitting modes with just one (lowest) transverse index. It is shown that a comparison between the theory and experiment can be made only for specific geometry and operating conditions.

UDC: 535.41+621.378.33

PACS: 42.60.Nj

Received: 07.01.1976

 English version: Soviet Journal of Quantum Electronics, 1976, 6:7, 865–867