Chemical production of vibrationally excited HBr for a continuous wave laser

Journal Article · Mon Oct 01 04:00:00 EDT 1979 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.91188· OSTI ID:5970531

Miller, D J; Shackleford, W L; Emanuel, G

Bromine has been added to the hydrogen cavity fuel of a cw supersonic mixing HF chemical laser. The hydrogen atoms produced in the F+H/sub 2/..-->..HF(v< or =3)+H reaction are used to continuously produce vibrationally excited HBr by the reaction H+Br/sub 2/..-->..HBr(v< or =6)+Br. Infrared chemiluminescence measurements indicate unsaturated gain coefficients of about (2 +- 1) x 10/sup -3/ cm/sup -1/ for J=4 through J=8 for v=3, 2, and 1 levels of HBr. The current 3-cm gain length is not sufficient for lasing without the use of high-reflectivity mirrors, but a scaling to 18-cm gain length would be appropriate for a cw HBr chemical laser operating in the 4.0- to 4.5-..mu..m region.

• Research Organization: TRW Defense and Space Systems Group, Redondo Beach, California 90278
• OSTI ID: 5970531
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 35:7; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
BROMINE
CHEMICAL LASERS
CHEMILUMINESCENCE
CRYOGENIC FLUIDS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUID FLOW
FLUIDS
GAIN
HALOGENS
HYDROBROMIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
INFRARED RADIATION
INORGANIC ACIDS
LASER CAVITIES
LASERS
LUMINESCENCE
MIRRORS
MIXING
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
REFLECTIVITY
SCALING LAWS
SUPERSONIC FLOW
SURFACE PROPERTIES
VIBRATIONAL STATES