cw carbon monoxide laser with microwave excitation in the supersonic flow

Journal Article · Wed Oct 15 04:00:00 EDT 1980 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.92046· OSTI ID:5011070

Hoffmmann, P; Huegel, H; Schall, W; Schock, W

A new technique of efficiently coupling microwave energy into a supersonic gas flow is described. A stable self-sustained 2.45-GHz microwave discharge is applied to excite a cw CO gasdynamic laser. Electron densities well above the cutoff value have been achieved together with a reduced field strength within the discharge that is appropriate for efficient vibrational excitation. With an energy loading of 0.15 eV/molecule CO a laser power of 285 W was obtained in a small-scale flow channel at an overall efficiency of 6%.

• Research Organization: DFVLR, Institut fuer Technische Physik, Stuttgart, Germany
• OSTI ID: 5011070
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 37:8; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON MONOXIDE LASERS
DATA
EFFICIENCY
ELECTRIC DISCHARGES
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
EXPERIMENTAL DATA
FLUID FLOW
FREQUENCY RANGE
GAS FLOW
GAS LASERS
GHZ RANGE
INFORMATION
LASERS
MICROWAVE RADIATION
NUMERICAL DATA
POWER
RADIATIONS
SUPERSONIC FLOW
VIBRATIONAL STATES