Blue-Green Lasing Dyes. Part 1. Selection of Class of Dyes.
Abstract
Dye lasers operating in the blue-green region are strong candidates for underwater communication, illumination and surveillance purposes on account of their properties of tunability, collimation, beam coherence and high peak powers. This project was undertaken to provide organic dyes of higher efficiency, lower laser action threshold and particularly higher photochemical stability than the few presently available commercially. The problem was approached by chemically modifying known lasing materials according to rationale explained in the text and particular emphasis was placed on the effect of substituents on the triplet-triplet absorption spectra of molecules. Fourteen organic compounds were prepared, twelve of which showed superior laser action compared with present generation dyes. The aminocoumarins appear to be strong candidates in a search for the most suitable materials and further effort is being concentrated on these. Known and suspected paths of their photodecomposition are outlined and synthetic chemical steps to suppress reaction are discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1973
- Accession Number
- AD0914535
Entities
People
- Peter R. Hammond
Organizations
- Naval Air Weapons Station China Lake