CONSIDERATION OF THE SPLITTING OF THE METASTABLE LEVEL OF A THREE-LEVEL QUANTUM GENERATOR,
Abstract
Previous theoretical studies of a three-level laser have not taken into account the fact that in real materials the metastable level is split. A more rigorous treatment is presented here, considering the ruby laser as a four-level system and using the transition probabilities and particle distribution functions to derive the conditions for steady-state oscillation. Factors favoring transition from one or the other of the two metastable sub-levels to the ground state are examined in detail, and the requirements for establishing oscillation separately at either of the two levels are obtained. If the probabilities of particle redistribution between the components of the metastable level are small as compared to the probabilities of descent of excited particles into the metastable state, then simultaneous oscillation at both frequencies is possible. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 14, 1966
- Accession Number
- AD0634231
Entities
People
- B. I. Stepanov
- V. P. Gribkovskii
Organizations
- Johns Hopkins University Applied Physics Laboratory