Accession Number:

ADA207134

Title:

Quasi-Aromatic Heterocyclics as Laser Dyes

Descriptive Note:

Interim technical rept.

Corporate Author:

NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA

Report Date:

1989-04-19

Pagination or Media Count:

10.0

Abstract:

Superior laser dyes were recently discovered in the quasi-aromatic families of syn-dioxabimanes and pyrromethene-BF2 complexes. The representative new dye mu-bis-carboethoxy methylene-syn-methylene, methyl bimane lased at 507 nm with 50 greater efficiency than was obtained with Coumarin 30. A similar determination showed 4, 4-difluoro-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s- indacene to lase at 546 nm with about 300 greater efficiency than was obtained from Coumarin 545. These quasi-aromatic systems are readily available and offer desirable properties of stability photo, thermal, and chemical, solubility, and diminished triplet-triplet absorption in the lasing spectral region. Selected spectroscopic and lasing properties of these new laser dyes are presented. Keywords Laser dyes Dye laser Quasi aromatic heterocyclics Heterocycles.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE