Accession Number : ADB171978

Title :   Development of New Laser Protective Dyes. Phase 2.

Descriptive Note : Annual rept. 1 Aug 91-31 Jul 92,

Corporate Author : SPECTRA SCIENCE CAMBRIDGE MA

Personal Author(s) : Roberts, F. D.

Report Date : 21 AUG 1992

Pagination or Media Count : 12

Abstract : The overall purpose of this research effort is to develop dyes that: are compatible with optical grade plastic that can be manufactured into lens devices and will provide protection for the eye against lasers that emit in the region from 700 nm to 1100 nm. One of the major problems with dyes available for this purpose is that they are thermally and photochemically unstable. In Steadfast's Phase I research, the feasibility of thermally stabilizing cyanine and squarylium dyes for simulated polycarbonate injection molding conditions was demonstrated, justifying the continuation of Steadfast's dye synthesis and evaluation program. In Phase II, the synthesis and stabilization of new laser-protective dyes is planned. Research will continue to focus on dyes that absorb in the near-infrared (NIR) region.

Descriptors :   *DYE LASERS, PROTECTION, LASERS, DYES, HAZARDS, SYNTHESIS, EYE SAFETY, OPTICAL MATERIALS, PLASTICS, LENSES, THERMAL STABILITY, CYANINE DYES, POLYCARBONATES, INJECTION MOLDING, NEAR INFRARED RADIATION, FLUORENES.

Subject Categories : Lasers and Masers
      Coatings, Colorants and Finishes
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE