Chemical Stabilization of Laser Dyes.
Abstract
Coumarin laser dyes upon excitation degrade to produce products which absorb at the lasing wavelength. This results in attenuation of dye laser output through interference of stimulated emission. The roles of singlet oxygen and excitation intensity on dye degradation were explored. Singlet oxygen is formed but its reactions with the dye do not appear to be a major cause of dye laser output deterioration. High light intensity results in dye sensitized, solvent oligomerization to yield materials which interfere with dye stimulated emission. 1, 4-Diazabicyclo2,2,2octane (DABCO)inhibits this oligomerization. Keywords: Photochemistry; Lasers; dyes; stabilizers; oxygen; multiphoton; photon.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 07, 1987
- Accession Number
- ADA180617
Entities
People
- Tad H. Koch
Organizations
- University of Colorado Boulder