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Long-pulse excimer lasers for materials processing and medical applications [electronic resource].

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 1986.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 17 : digital, PDF file
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Present day commercial excimer lasers with the exception of the Helionetics device are inherently short pulse ultraviolet sources. The pulses are short due to the inherent instability of the avalanche discharge with electronegative elements in the gas mix. The utilization of an initial fast voltage risetime allows one to overcome this difficulty and a number of long-pulse lasers are built using this technique. While the initial lasers of this form used a series rail-gap to achieve the fast voltage risetime, subsequent schemes using magnetic pulse compression and a fast prepulse have greatly improved the viability of the technique as a commercial device. Presently, however, these devices are generally rather bulky. This report discusses a passive stabilization technique that not only allows long pulse laser operation, but allows for a much slower charging circuit as well as a factor of 10 gain in pulse repetition rate per given gas flow compared with more conventional excimer laser systems. The slower charging circuit greatly eases the stress on the pulse power components such as thyratrons and capacitors and should be an important factor contributing to dependable industrial excimer laser systems. The gain of a factor of 10 in pulse repetition rate per unit gas flow results in extremely high pulse repetition rate laser systems in a very compact package; such lasers should find a place in a number of industrial and medical applications. 10 figs.
Report Numbers
E 1.99:la-ur-86-1525
E 1.99: conf-8605110-2
conf-8605110-2
la-ur-86-1525
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1986.
"la-ur-86-1525"
" conf-8605110-2"
"DE86011267"
OPTO '86 conference, Paris, France, 13 May 1986.
Sze, R.C.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14113753