A technique for studying the absorption characteristics of electron beam excited gas plasmas by organic dye vapors
Abstract
Electron beam pumped gas lasers have proven to be highly efficient sources of coherent radiation. Scaling such laser systems for high power operation seems to be limited by several quenching processes such as bound-bound absorption from low lying excited atomic and molecular states in the rare gases. A description is provided of a novel technique for probing the absorption behavior of electron beam excited rare gas systems, such as argon, neon, or xenon, by addition of dye vapor. The dye vapor fluorescence can then serve as a radiation source to probe plasma absorption with high spectral resolution and broad range. Measurements performed with p-phenylene-bis-(5,7-phenyl-2 oxazole) indicate an absorption of 25% for argon at 4 atm in the spectral range from 375 to 395 nm.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- September 1978
- DOI:
- 10.1109/JQE.1978.1069868
- Bibcode:
- 1978IJQE...14..646M
- Keywords:
-
- Dyes;
- Electron Beams;
- Gas Lasers;
- Laser Outputs;
- Molecular Absorption;
- Plasma-Particle Interactions;
- Argon Lasers;
- Fluorescence;
- Ionized Gases;
- Molecular Excitation;
- Photoabsorption;
- Rare Gases;
- Vapor Phases;
- Lasers and Masers