Accession Number : ADD007992

Title :   Pulsed Cyclic Laser Based on Dissociative Excitation.

Descriptive Note : Patent,


Personal Author(s) : Schimitschek,Erhard J ; Celto,John E

Report Date : 14 Oct 1980

Pagination or Media Count : 9

Abstract : A pulsed laser produces emitted laser energy by dissociative excitation of metal dihalide and cyclic recombination. A metal dihalide selected from subgroup II-B of the periodic table of elements is contained within an elongate sealed enclosure. Two elongate electrodes having external terminals are supported in parallel relationship within the enclosure, forming a gap parallel to the principal axis of the enclosure. A source of pulsed electric power is connected to the terminals of the two electrodes, producing repetitive transverse electric discharges across the gap. An inert buffer gas is included within the enclosure for aiding electric discharge uniformity, and to provide vibrational relaxation of the lasing medium in its electronic states. The buffer gas is ionized by a third electrode within the enclosure connected to a source of pulses which immediately precede the pulses applied to the first and second electrode so that the lasing medium is preionized immediately prior to the principal electric discharge. Two reflective surfaces, one of which is only partially reflective, are aligned with the principal axis of the laser assembly for producing an optical resonator for the emitted laser energy. (Author)

Descriptors :   *Patents, *Chemical lasers, Pumping(Electronics), Electric discharges, Chemical dissociation, Recombination reactions, Molecular vibration, Relaxation, Mercury compounds, Bromides

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE