Lasers based on selenium /sup 1/S/sub 0/ metastable atoms)/sup a/

Journal Article · Sat Nov 15 04:00:00 EST 1980 · J. Chem. Phys.; (United States)

OSTI ID:7082299

Powell, H T; Schleicher, B R

We have investigated the laser performance of the /sup 1/S/sub 0/--/sup 1/D/sub 2/ and /sup 1/S/sub 0/--/sup 3/P/sub 1/ electric-dipole-forbidden transitions of the ground configuration of selenium atoms using 172 nm photolysis of OCSe to produce large concentrations of Se(/sup 1/S). With complete dissociation of OCSe the Se(/sup 1/S) atoms are quenched by photoelectrons and Se(/sup 3/P) atoms, both undesired products of the photolysis. The quenching by electrons is removed and the laser performance is greatly improved by employing small concentrations of SF/sub 6/ for electron attachment. At optimized conditions, we have obtained a laser output on both transitions corresponding to 0.3 photons for each OCSe molecule initially in the laser volume. We have also investigated the effects on the lasers of collision broadening and collision-induced emission and have demonstrated XeSe and KrSe collision-induced lasers operating at wavelengths near the Se(/sup 1/S/sub 0/--/sup 1/D/sub 2/) transition.

• Research Organization: Advanced Lasers Group, University of California, Lawrence Livermore Laboratory, Livermore, California 94550
• OSTI ID: 7082299
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 73:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
D STATES
ELEMENTS
EMISSION
EMISSION SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FORBIDDEN TRANSITIONS
GAS LASERS
LASERS
METASTABLE STATES
OPERATION
PERFORMANCE
S STATES
SELENIUM
SEMIMETALS
SPECTRA
STIMULATED EMISSION