Accession Number : AD0437608

Title :   LOSS FACTORS AFFECTING RUBY LASER SYSTEMS.

Descriptive Note : Final rept.,

Corporate Author : TECHNICAL OPERATIONS INC BURLINGTON MASS

Personal Author(s) : Masters,J. ; Ward,J. ; Murray,E. M. E.

Report Date : 31 JAN 1964

Pagination or Media Count : 76

Abstract : Efficient high-power output performance of ruby lasers depends largely on reducing the effect of two basic types of loss: (1) storage losses, or lsses of atoms from the excited state that occur during the pumping phase, and (2) internal propagation loss suffered by stimulated emission; both are strongly dependent on geometric parameters. Internal propagation losses were found to be significant in ruby. Storage loss due to nonlinear de-excitation during pumping is important. Preliminary measurements of the nonlinear deexcitation due to spontaneous emission amplification were performed under nonstandard operating conditions and found to be as large as 50% inversion loss for a large, cooled ruby sample. The limitations of simple physical models of ruby laser systems are discussed. Studies are reported of the important influence of mode coupling and mode selection upon the threshold condition for oscillation in ruby lasers. (Author)

Descriptors :   (*LASERS, RUBY), OSCILLATORS, PROPAGATION, EXCITATION, EMISSIVITY, OSCILLATION, DIFFRACTION, MIRRORS, ATOMIC ENERGY LEVELS, ABSORPTION, MEASUREMENT, MATHEMATICAL MODELS, TEMPERATURE, LINE SPECTRA, LENSES, COLLIMATORS, OPTICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE