Improvements in long-pulse, electron-beam-pumped XeF( C r arrow A ) laser performance

Journal Article · Wed Aug 15 04:00:00 EDT 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.346675· OSTI ID:6803487

Litzenberger, L N; Mandl, A ^[1]

---

1. Avco Research Laboratory, Inc., Everett, Massachusetts 02149 (USA)

The performance of the XeF({ital C}{r arrow}{ital A}) laser, pumped at a rate of 290 kW/cm{sup 3} with a 600-ns electron-beam pulse, has been improved through the optimization of the laser gas mixture and resonator output coupler reflectivity. An intrinsic efficiency of 1.1% and a specific output energy of 2 J/l have been demonstrated. A uniformly pumped region of the gain medium was selected for diagnosis in these measurements. In a separate experiment with larger diameter mirrors, a total output energy of 4 J was recorded. These are the highest specific and total output energies reported thus far for a directly electrically excited XeF({ital C}{r arrow}{ital A}) laser. The laser pulse duration was 350 ns (FWHM), and the laser bandwidth was 160 A. The small-signal net gain was measured during the electron-beam pulse at various wavelengths, and a peak gain of 0.4%/cm was observed. The sidelight fluorescence spectrum was also recorded.

• OSTI ID: 6803487
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 68:4; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
DISPERSIONS
ELECTRICAL PUMPING
ELECTRON BEAM PUMPING
EXCIMER LASERS
FLUIDS
FLUORESCENCE
FLUORIDES
FLUORINE COMPOUNDS
GAS LASERS
GASES
HALIDES
HALOGEN COMPOUNDS
LASERS
LUMINESCENCE
MIXTURES
OPTIMIZATION
PERFORMANCE
PUMPING
RARE GAS COMPOUNDS
XENON COMPOUNDS
XENON FLUORIDES