DocumentCode :
1061433
Title :
Effect of rotational and intramode vibrational coupling on short-pulse amplification in CO2
Author :
Harrach, Robert J.
Author_Institution :
University of California, Lawrence Livermore Laboratory, Livermore, CA
Volume :
11
Issue :
7
fYear :
1975
fDate :
7/1/1975 12:00:00 AM
Firstpage :
349
Lastpage :
357
Abstract :
The extraction of stored energy from a CO2 -laser amplifier by a short-duration input pulse is described using a rate-equation theory. The influence of rotational and intramode vibrational energy-transfer processes is studied as a function of the energy density Ein and width τp of the input pulse. By a suitable choice of normalized variables δ and 
for the extracted-energy and input-energy density, it is found that the results for different values of τp are interrelated by simple translations in a δ versus diagram. The characteristic curves in this diagram are nearly independent of the amplifier gain factor 
for high-gain systems. A comparison of the theory with experimental results of Figueira et al. shows satisfactory agreement and leads to an estimate of (1.0-3.5) 10-6s-1torr-1for the rate of intra-mode vibrational-vibrational (VV) energy transfer in CO2 .
for the extracted-energy and input-energy density, it is found that the results for different values of τ diagram. The characteristic curves in this diagram are nearly independent of the amplifier gain factor for high-gain systems. A comparison of the theory with experimental results of Figueira et al. shows satisfactory agreement and leads to an estimate of (1.0-3.5) 10-6s-1torr-1for the rate of intra-mode vibrational-vibrational (VV) energy transfer in COKeywords :
Absorption; Atmospheric modeling; Carbon dioxide; Energy exchange; Laser transitions; Optical pulses; Pulse amplifiers; Reservoirs; Space vector pulse width modulation;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1975.1068648
Filename :
1068648
Link To Document :
