Absorption and gain measurements in the KrF laser medium at high pump rate

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.92213· OSTI ID:6570711

Edwards, C B; O'Neill, F; Shaw, M J

Losses have been measured at 257.2 nm in e-beam-pumped, KrF laser mixtures at pump rates up to 4 MW/cm/sup 3/ and pressures up to 3000 Torr. A maximum absorption of 3.5% cm/sup -1/ is observed in a gas mixture of 4-Torr F/sub 2/, 125-Torr Kr, and 2871-Torr Ar. Losses are reduced in the presence of lasing. The absorption cross section of Kr/sub 2/F* at 257.2 nm is estimated to be 1.8( +- 1.1) x 10/sup -17/ cm/sup 2/. Net gain has been measured as a function of pump rate in a gas mixture of 4-Torr F/sub 2/, 125-Torr Kr, and 1371-Torr Ar. A net gain of 22% cm/sup -1/ and a gain to nonsaturable loss ratio approx.20 have been observed.

• Research Organization: Laser Division, SRC Rutherford and Appleton Laboratories, Chilton, Didcot, Oxfordshire, 0X11 OQX, England.
• OSTI ID: 6570711
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 38:11; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION
ARGON
BEAMS
CROSS SECTIONS
DATA
DISPERSIONS
ELECTRON BEAMS
ELEMENTS
ENERGY LOSSES
EXPERIMENTAL DATA
FLUIDS
FLUORIDES
FLUORINE
FLUORINE COMPOUNDS
GAIN
GAS LASERS
GASES
HALIDES
HALOGEN COMPOUNDS
HALOGENS
INFORMATION
KRYPTON
KRYPTON COMPOUNDS
KRYPTON FLUORIDES
LASERS
LEPTON BEAMS
LOSSES
MEDIUM PRESSURE
MIXTURES
NONMETALS
NUMERICAL DATA
PARTICLE BEAMS
RARE GAS COMPOUNDS
RARE GASES