LOSS FACTORS AFFECTING RUBY LASER SYSTEMS.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1964
- Accession Number
- AD0437608
Entities
People
- E. M. E. Murray
- J. Masters
- J. Ward