Optical materials for output windows of large-scale e-beam-pumped KrF lasers

Author

Zvorykin, V.D. ; Arlantsev, S.V. ; Bakaev, V.G. ; Morozov, N.V. ; Rantsev, O.V. ; Sagitov, S.I. ; Sergeev, P.B. ; Sychugov, G.V. ; Tserkovnikov, A.Yu.

Author_Institution

P.N. Lebedev Phys. Inst., Acad. of Sci., Moscow, Russia

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only given. E-beam-pumped KrF lasers are very promising drivers for inertial confinement fusion due to their high efficiency, short radiation wavelength and a large bandwidth, as well as to principle feasibility to operate with repetition rate of a few Hz at multi-kilojoule energy level. One of the problems to be developed for reliable rep-rate KrF laser operation is a stability of output laser windows. In addition to intense UV laser light they would be exposed to fluorine etching (it is contained in a working gas mixture), and to irradiation by bremsstrahlung X-rays and energetic scattered electrons. A number of optical materials such as fused silica (SiO/sub 2/), calcium fluoride (CaF/sub 2/), magnesium fluoride (MgF/sub 2/), and synthetic leucosapphire (Al/sub 2/O/sub 3/) have been comparatively examined in regard of chemical resistance to fluorine, nonlinear and ionizing-radiatian-induced absorption at KrF laser radiation wavelength of 248 nm.

Keywords

etching; excimer lasers; krypton compounds; laser accessories; laser stability; optical materials; optical windows; 248 nm; Al/sub 2/O/sub 3/; CaF/sub 2/; KrF; KrF laser radiation wavelength; MgF/sub 2/; SiO/sub 2/; bremsstrahlung X-rays; calcium fluoride; energetic scattered electrons; fluorine chemical resistance; fluorine etching; fused silica; high efficiency; inertial confinement fusion; intense UV laser light; ionizing-radiatian-induced absorption; large bandwidth; large-scale e-beam-pumped KrF lasers; laser drivers; magnesium fluoride; multi-kilojoule energy level; optical materials; output laser window stability; output windows; reliable rep-rate KrF laser operation; short radiation wavelength; synthetic leucosapphire; Bandwidth; Chemical lasers; Energy states; Gas lasers; Inertial confinement; Large-scale systems; Laser fusion; Laser stability; Optical materials; X-ray lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on

Conference_Location

Nice

Print_ISBN

0-7803-6319-1

Type

conf

DOI

10.1109/CLEOE.2000.910033

Filename

910033