Chirp in pulsed, rf-excited CO/sub 2/ waveguide lasers

Journal Article · Fri Jul 15 04:00:00 EDT 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.341993· OSTI ID:7255523

Sharp, R C

An experimental investigation has been conducted to determine the frequency stability of a pulsed, rf-excited waveguide CO/sub 2/ laser. Unlike transversely excited atmospheric CO/sub 2/ lasers, for which the optical extraction of energy (laser-induced medium perturbation) is typically the dominant source of frequency instability, the driver in the long pulse (>30 ..mu..s) waveguide laser is the thermal heating of the gain medium due to the rf input energy. Modeling of the chirp in the pulsed waveguide laser is performed. Included are both finite V-T effects in the short term and heat conduction and particle migration out of the laser bore by the gaseous gain medium in the long term.

• Research Organization: Raytheon Research Division, 131 Spring Street, Lexington, Massachusetts 02173
• OSTI ID: 7255523
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 64:2; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
ENERGY LOSSES
FREQUENCY DEPENDENCE
GAS LASERS
IRRADIATION
LASERS
LOSSES
PERFORMANCE TESTING
POWER LOSSES
PULSED IRRADIATION
STABILITY
TESTING