Theoretical evaluation of electron-beam-excited KrF lasers using argon-free mixtures of one atmosphere

Journal Article · Wed Aug 15 00:00:00 EDT 1984 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.95271· OSTI ID:6613171

Kannari, F; Suda, A; Obara, M; Fujioka, T

The output performance of the electron-beam-excited KrF laser operating at one atmosphere is theoretically analyzed because the KrF laser at one atmosphere can greatly reduce the design constraints on the large laser windows and the electron-beam pressure foils in a huge laser system as the inertial confinement fusion energy driver. The KrF laser using the atmospheric pressure, argon-free laser mixture is found to operate with an intrinsic laser efficiency as high as that of high-pressure, aregon-diluted mixtures. This is because three-body collisional quenching is not a detrimental energy-loss channel for the atmospheric pressure operation. By using higher excitation rate and shorter excitation pulse width pumping, higher intrinsic laser efficiency than conventional, argon-diluted, high-pressure mixtures is found to be attainable. Moreover, the specific laser energy (28 J/l, for 1-atm Kr/F/sub 2/ mixtures pumped by an electron beam of 100 ns, 600 keV, and 150 A/cm/sup 2/) is comparable to that of two-atm, argon-rich laser gas mixtures under the same excitation condition.

• Research Organization: Department of Electrical Engineering, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohoma-shi, 223, Japan
• OSTI ID: 6613171
• Journal Information: Appl. Phys. Lett.; (United States), Vol. 45:4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAS LASERS
ELECTRON BEAM PUMPING
PERFORMANCE
EFFICIENCY
ENERGY
INERTIAL CONFINEMENT
KRYPTON FLUORIDES
POWER
CONFINEMENT
ELECTRICAL PUMPING
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
KRYPTON COMPOUNDS
LASERS
PLASMA CONFINEMENT
PUMPING
RARE GAS COMPOUNDS
420300* - Engineering- Lasers- (-1989)