NDLI: A 170 J electron beam pumped XeF(C/spl rarr/A) laser

Content Provider	IEEE Xplore Digital Library
Author	Litzenberger, L.N. Smith, M.J.
Copyright Year	1965
Abstract	A pulse output energy of 170 J has been achieved from an XeF(C/spl rarr/A) laser system, pumped by a pair of counterpropagating, three-meter-long electron beams. This represents a record for all types of pumping, for this excimer system. Energy was extracted from a volume of /spl sim/100 L, using a free-running stable oscillator. No evidence of laser oscillations on the competing XeF(B/spl rarr/X) transition was observed. Within the extraction volume the laser gas was pumped at a rate of 140 kW/cm/sup 3/ (time average value), for a period of 1.7 /spl mu/s. The optical cavity was folded, giving a gain length of 6 m. The optical pulse duration was 0.8 /spl mu/s (full width at half maximum), and the observed flux buildup time of /spl sim/1 /spl mu/s was consistent with modeling and a measurement of the net gain. The specific output energy was 1.7 J/L which is comparable to that achieved in previous, small scale experiments at somewhat higher pump rate. The results confirm the volumetric scalability of the electron beam pumped XeF(C/spl rarr/A) laser system to high output energy per pulse, and the feasibility of operating this system at a low electron beam pump rate which relaxes constraints on the design of the electron gun and pulse power subsystems in a high output energy device. Means for extending the laser pulse duration and increasing the output energy of the specific test device are discussed. An output energy of /spl sim/1000 J is projected for an optimized gas cell width, for full size resonator mirrors, and with injection.<>
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	546
Ending Page	555
Page Count	10
File Size	1078712
File Format	PDF
ISSN	00189197
Volume Number	31
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electron beams Laser excitation Pump lasers Optical pulses Laser transitions Gas lasers Optical resonators Oscillators Optical pumping Gain measurement
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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