Accession Number : ADA290999

Title :   Development of Continuous Visible Chemical Laser Amplifiers and Oscillators from the Na3-X(C1,Br,I) Reactions and Their Analogs and Energy Transfer Pumping from Efficiently Produced Metastable States.

Descriptive Note : Final rept. 1 Jun 90-31 Oct 94,

Corporate Author : GEORGIA TECH RESEARCH CORP ATLANTA

Personal Author(s) : Gole, James L.

PDF Url : ADA290999

Report Date : DEC 1994

Pagination or Media Count : 433

Abstract : Visible chemical laser amplifiers have been generated employing the highly efficient and selective formation of sodium dimer electronically excited states from the sodium trimer-halogen atom (x = Cl,Br,I) reactions. Optical gain through stimulated emission has been demonstrated in select regions close to 527, 492, and 460 nm. With a focus to increasing amplifier gain length and amplifying medium concentration, a newly configured device creates intersecting alkali and halogen sheaths which form the basis for the creation of visible chemical laser oscillators. This device has now revealed the first Raman pumping due purely to chemical reaction in the absence of an external light source. Extrapolations on the Na3-X amplifier concept involving Group IIA metal - F,Cl reactions are considered. Very near resonant energy transfers from selectively formed metastable states of SiO and GeO to receptor alkali atoms form sodium or potassium atom laser amplifiers and a gain condition at lambda= 569, 616, 819, and 581 nm. These results form the basis for full cavity oscillation in the Na system at 569 nm. Silane based thermolysis - discharge and thermolysis - photolysis sources of SiO metastables are under development. The efficient energy transfer pumping of potential amplifying transitions in the lead (Pb), copper (Cu), and tin (Sn) systems is outlined.

Descriptors :   *LASER AMPLIFIERS, *CHEMICAL LASERS, OSCILLATORS, LASER CAVITIES, REACTION KINETICS, PHOTOLYSIS, EFFICIENCY, SODIUM, EMISSION SPECTRA, ENERGY TRANSFER, ATOMS, LIGHT SOURCES, COPPER, RESONANCE, VISIBILITY, GAIN, RAMAN SPECTRA, METASTABLE STATE, POTASSIUM, OSCILLATION, AMPLIFIERS, DIMERS, CONTINUOUS WAVE LASERS, HALOGENS, EXTRAPOLATION, OPTICAL PUMPING, LEAD(METAL).

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE