Short-pulsed 2.1 mu m laser performance of Cr,Tm,Ho:YAG

An examination is conducted of Q-switching in flashlamp-pumped Cr,Tm,Ho:YAG 2.1 mu m lasers. Experiments show that short-pulse operation in this material can exhibit comparable efficiencies to the long-pulse operation mode. Losses in overall efficiency are shown to be largely due to mode restriction...

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Bibliographic Details
Published inIEEE journal of quantum electronics Vol. 27; no. 5; pp. 1129 - 1131
Main Authors Bowman, S.R., Winings, M.J., Searles, S., Feldman, B.J.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.05.1991
Institute of Electrical and Electronics Engineers
Subjects
Atomic beams
Chromium
Crystals
Doped-insulator lasers and other solid state lasers
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Laser excitation
Laser transitions
Lasers
Optical materials
Optical pulses
Optics
Physics
Pump lasers
Stationary state
Temperature sensors
Chromium
Optical pumping
Photoflash lamp
Laser pulse
YAG laser
Solid state laser
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Summary:An examination is conducted of Q-switching in flashlamp-pumped Cr,Tm,Ho:YAG 2.1 mu m lasers. Experiments show that short-pulse operation in this material can exhibit comparable efficiencies to the long-pulse operation mode. Losses in overall efficiency are shown to be largely due to mode restriction in the resonator. A three-pulse extraction format is shown to improve slope efficiency by more than 200% compared to single Q-switched pulse extraction. The optimal interpulse interval was determined, revealing the time scale of the Tm sensitization process. Spectral shifts in the short-pulse operation mode were observed. Simultaneous dual-wavelength emission was found to be the most common mode of operation for the Q-switched laser.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9197
1558-1713
DOI:10.1109/3.83365