Performance of N/sub 2//CO/sub 2/ gasdynamic mixing lasers with various injection techniques

Journal Article · Mon Jan 31 23:00:00 EST 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323657· OSTI ID:7336473

Schall, W; Hoffmann, P; Huegel, H

The supersonic mixing is the only technique that can exploit the full potential of a thermally excited gasdynamic N/sub 2//CO/sub 2/ laser. A screen-nozzle mixing technique is compared with two other near-throat mixing techniques, and is found to be the superior method. Averaged values of the small-signal gain up to 3% cm/sup -1/ and specific energies of 10 kJ/kg total mass flow have been measured in a laser channel of 3.5 x 1.2-cm/sup 2/ cross section. Characteristics of both gain and extracted power as a function of the nitrogen stagnation temperature and the CO/sub 2/ mole fraction are discussed for all three types of CO/sub 2/ injection. (AIP)

• Research Organization: DFVLR-Institut fuer Plasmadynamik, Pfaffenwaldring 38/40, 7000 Stuttgart 80, F.R. Germany
• OSTI ID: 7336473
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:2; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ARGON
BEAM INJECTION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUID FLOW
FLUIDS
GAIN
GAS LASERS
HELIUM
LASERS
MACH NUMBER
MIXING
NITROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POWER
RARE GASES
SUPERSONIC FLOW
VELOCITY