Transient effects in burst-mode operation of pulsed barium vapor lasers
Transient effects in burst-mode operation of pulsed barium vapor lasers
An externally heated barium laser has been operated in burst mode in order to investigate the approach of the medium to steady-state operation in a continuously pulsed self-heated mode. Studies of the temporal evolution of discharge-current and cathode-voltage waveforms and laser output throughout a burst of pulses reveal short-term (first few pulses) and long-term (tens of pulses) transient effects. The former are attributed to changing prepulse conditions early in the burst, and the latter to the build up of radial thermal gradients in the laser medium due to gas heating. Simple models enabling the calculation of time-averaged radial gas temperature profiles in the steady-state limit and temporal evolution of spatially averaged gas temperatures are presented to elucidate the effects of gas heating.
2376-2384
Pask, H.M.
65ac728f-f119-43fe-af8a-29116a3a1391
Piper, J.A.
9ec246c5-cae4-4059-89de-69975ddb0154
October 1994
Pask, H.M.
65ac728f-f119-43fe-af8a-29116a3a1391
Piper, J.A.
9ec246c5-cae4-4059-89de-69975ddb0154
Pask, H.M. and Piper, J.A.
(1994)
Transient effects in burst-mode operation of pulsed barium vapor lasers.
IEEE Journal of Quantum Electronics, 30 (10), .
(doi:10.1109/3.328585).
Abstract
An externally heated barium laser has been operated in burst mode in order to investigate the approach of the medium to steady-state operation in a continuously pulsed self-heated mode. Studies of the temporal evolution of discharge-current and cathode-voltage waveforms and laser output throughout a burst of pulses reveal short-term (first few pulses) and long-term (tens of pulses) transient effects. The former are attributed to changing prepulse conditions early in the burst, and the latter to the build up of radial thermal gradients in the laser medium due to gas heating. Simple models enabling the calculation of time-averaged radial gas temperature profiles in the steady-state limit and temporal evolution of spatially averaged gas temperatures are presented to elucidate the effects of gas heating.
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Published date: October 1994
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Local EPrints ID: 441521
URI: http://eprints.soton.ac.uk/id/eprint/441521
ISSN: 0018-9197
PURE UUID: 7051aa7a-5902-4e9c-8768-e093e0227879
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Date deposited: 17 Jun 2020 16:30
Last modified: 16 Mar 2024 08:14
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Author:
H.M. Pask
Author:
J.A. Piper
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