CYCLOTRON RESONANCE PUMPING OF GAS LASERS.
Abstract
Based on experience from previous experiments, a laser tube, 40 centimeters long and 8 millimeters in diameter, was designed, constructed, and fitted into a tunable microwave cavity within a magnetic solenoid. The assembly was then aligned in an optical resonator. A second laser tube (2.5-millimeter diameter) was built for probing of the large tube. Several basic preliminary experiments were carried out to obtain information on magnetically confined 'away from wall' discharges and metal tube discharges. To obtain basic information on magnetically confined 'away from wall' discharges, measurements were made of the spontaneous emission from a discharge defined in the center of a 20-millimeter-diameter tube by a 2-millimeter-bore glass orifice at the cathode and confined to this diameter for the length of the tube (30 cm) by a strong axial magnetic field. The results of the measurements showed a quadratic dependence for ionized line emission and linear dependence for neutral line emission with discharge current. A metal (aluminum) walled discharge tube, 20 centimeters long with a 4-millimeter inner diameter, which has two 2.5-millimeter stainless-steel orifices at either end was investigated. This tube proved to be potentially suitable for laser use. Current-voltage characteristics were obtained for both tubes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1965
- Accession Number
- AD0475061
Entities
People
- R. Kocher
- Sheikh Z. Ahmed
- T. Faith