Selective Reactivity, Ultrafast Energy Transfer and the Development of Chemically Pumped Visible Lasers
Abstract
Two successful approaches to the formation of electronically inverted atomic diatomic configurations based on (1) highly efficient near resonant intermolecular energy transfer and (2) highly efficient and selective fast direct chemical reaction are outlined. Near resonant energy transfer pumping from selectively formed metastable states of SiO and GeO is used to form thallium, gallium, sodium, and potassium atom laser amplifiers at = 535, 417, 569, 616, 819, and 581 nm. The gain condition in the Tl, Ga, Na, and K systems forms the basis for full cavity oscillation on the Tl 7 sup 2 S sub 1/2 -6 sup 2 P sub 3/2 transition at 535 nm and the Na 4d sup 2D - 3p sup 2P transition at 569 m. The extremely high cross section Na sub n (n=2,3)-X(Cl,Br,I) reactions are employed to create a continuous electronic population inversion based on the chemical pumping of sodium dimer (Na2). Optical gain through stimulated emission has been demonstrated in select regions close to 527, 492, and 460 nm. The considered amplifiers are being optimized and modeled with a focus to increasing amplifier gain length and amplifying medium concentration so as to facilitate their conversion to visible chemical laser oscillators. The study of addition analog systems suggests that the two concepts considered will be generic.... Visible chem. lasers, Energy transfer, Selectivity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1992
- Accession Number
- ADA260123
Entities
People
- James L. Gole
Organizations
- Georgia Tech Research Corporation