Accession Number : ADA296506

Title :   The Development of Chemically Pumped Visible Lasers from Efficient Electronic Energy Transfer.

Descriptive Note : Final rept. 1 May 93-30 Apr 95,

Corporate Author : GEORGIA INST OF TECH ATLANTA SCHOOL OF PHYSICS

Personal Author(s) : Gole, James L.

PDF Url : ADA296506

Report Date : 30 JUN 1995

Pagination or Media Count : 362

Abstract : Visible chemical laser amplifiers have been generated in select wavelength regions near 527, 492, and 460 nm employing the highly efficient and selective formation of sodium dimer electronically excited states from the sodium trimer-halogen atom (x=C1, Br, I) reactions. With a focus to increasing amplifier gain length and amplifying medium concentration, an extended path length slit source device has been constructed which created intersecting alkali ahd halogen sheaths forming the basis for the development of a visible chemical laser oscillator. This device has now revealed the first Raman pumping resulting entirely from a chemical reaction, the process being observed in the absence of an external light source. Extrapolations on the Na3-X amplifier concept involving Group IIA metal - F, CI reactions are considered. Very near resonant energy transfers from selectively formed metastable states of SiO to receptor alkali atoms form sodium or potassium atom laser amplifiers, resulting in a gain condition at lambda = 569, 616, 819, and 581 mm.

Descriptors :   *LASER PUMPING, *CHEMICAL LASERS, *CHEMILUMINESCENCE, LASER CAVITIES, LASER INDUCED FLUORESCENCE, EXCITATION, SODIUM, ENERGY TRANSFER, ELECTRON ENERGY, LIGHT SOURCES, COPPER, RESONANCE, GAIN, TIN, OSCILLATION, RAMAN SPECTRA, METASTABLE STATE, POTASSIUM, DIMERS, LASER AMPLIFIERS, BROMINE, HALOGENS, PARTICLE COLLISIONS, LEAD(METAL).

Subject Categories : Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE