17 August 1978 Gas Dynamic And Acoustic Management For Visible Wavelength Lasers
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Proceedings Volume 0138, Advances in Laser Technology III: Emphasizing Gaseous Lasers; (1978); doi: 10.1117/12.956225
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States
Abstract
Criteria for fluid and thermal properties delineating the baseline flow homogeneity, such as those for ΔT/T, ΔP/P, Δp/p, ΔU/U will be established. These are based on medium optical characteristics and requirements in terms of wavelength, pressure, and temperature of the gas medium associate,- with visible wave-length lasers. To meet these criteria, various methods for conditioning the baseline flow from the stand-point of gas dynamic and acoustic technologies will be presented and discussed. The merits of open and closed cycles for the baseline flow will be evaluated through consideration of gas utilization efficiency and component requirements. These criteria become acoustic dominated for pulsed lasers. The pulse repetition frequency required for a given laser defines the clearing time allowed to restore the original baseline flow. A parallel consideration becomes necessary to account for the pulse input perturbation. Solutions to acoustic management problems must be obtained by considering all sources of reflection, acoustic characteristics of open and closed cycles in terms of wave propagation, attenuation, and dissipation.
© (1978) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cornelius C. Shih, Charles M. Cason, "Gas Dynamic And Acoustic Management For Visible Wavelength Lasers", Proc. SPIE 0138, Advances in Laser Technology III: Emphasizing Gaseous Lasers, (17 August 1978); doi: 10.1117/12.956225; https://doi.org/10.1117/12.956225
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KEYWORDS
Acoustics

Pulsed laser operation

Gas lasers

Laser applications

Turbulence

Argon

Helium

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