Sidelight Spectroscopy of a Carbon Dioxide Laser Amplifier.
Abstract
A method for determining the vibrational energy distribution of nitrogen molecules in the electronic ground state in a carbon dioxide-nitrogen-helium laser amplifier was evaluated. This method relates the relative population of the C triplet pi(u) electronic state to the relative population of the ground state of nitrogen. The relative population of the C triplet pi(u) electronic state was determined by measuring the relative intensities of the electron-vibrational bands of the second positive system of nitrogen. These measurements were conducted as the laser amplifier parameters, discharge current, total pressure, carbon dioxide concentration, and input power, were varied. It was found that the relative population of the C triplet pi(u) state was insensitive to changes in the laser amplifier parameters over a range significant to its operation. Measurements of spontaneous emission from the upper laser level of carbon of carbon dioxide were conducted. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1972
- Accession Number
- AD0743567
Entities
People
- David Arthur Laborde
Organizations
- Air Force Institute of Technology