High-power, long-pulse CO/sub 2/ laser transversely excited by a damped oscillating discharge through dielectric electrodes

Journal Article · Wed Jun 01 04:00:00 EDT 1983 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1137461· OSTI ID:5927000

Hokazono, H; Midorikawa, K; Obara, M; Fujioka, T

Applying a damped oscillating discharge to a dielectric-electrode TE (transversely excited) CO/sub 2/ laser, we obtain a high-power and long-pulse CO/sub 2/ laser output. With a decreasing value of the inductance inserted in parallel with the discharge load so as to make the discharge condition damped oscillating, laser output energy increased remarkably. When the inductance was 500 nH, a uniform glow discharge was obtained up to gas pressures of 500--600 Torr without any preionization. At a total pressure of 700 Torr (CO/sub 2//N/sub 2//He = 1/2/8), a maximum CO/sub 2/ laser output energy of 270 mJ/pulse (7.3 J/l atm) was obtained with an electrical efficiency of 4.3% and with a pulse duration of 7 ..mu..s.

• Research Organization: Department of Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama-shi 223, Japan
• OSTI ID: 5927000
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 54:6; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
DAMPING
DATA
DIELECTRIC MATERIALS
EFFICIENCY
ELECTRIC DISCHARGES
ELECTRODES
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GAS LASERS
GASES
GLOW DISCHARGES
HELIUM
INFORMATION
LASERS
LOW PRESSURE
MATERIALS
NITROGEN
NONMETALS
NUMERICAL DATA
ORIENTATION
OSCILLATIONS
PULSES
QUANTITY RATIO
RARE GASES