A high-speed image converter camera has been used to study the time variations as a function of position of the light emitted from a pink ruby operated as a laser. The gross properties of the emitted light follow the thereotical predictions reasonably well, but the new experimental technique used in these studies reveals a wealth of detail about the time variations of this light which has not been previously reported.
G. L. CLARK, R. F. WUERKER, and C. M. YORK, "High-Speed Photographic Study of the Coherent Radiation from a Ruby Laser," J. Opt. Soc. Am. 52, 878-878 (1962)