NDLI: Computer modeling of pulsed co2 lasers for lidar applications

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Computer modeling of pulsed co2 lasers for lidar applications

Content Provider	NASA Technical Reports Server (NTRS)
Author	Murty, Rom Spiers, Gary D. Smithers, Martin E.
Copyright Year	1991
Description	The experimental results will enable a comparison of the numerical code output with experimental data. This will ensure verification of the validity of the code. The measurements were made on a modified commercial CO2 laser. Results are listed as following. (1) The pulse shape and energy dependence on gas pressure were measured. (2) The intrapulse frequency chirp due to plasma and laser induced medium perturbation effects were determined. A simple numerical model showed quantitative agreement with these measurements. The pulse to pulse frequency stability was also determined. (3) The dependence was measured of the laser transverse mode stability on cavity length. A simple analysis of this dependence in terms of changes to the equivalent fresnel number and the cavity magnification was performed. (4) An analysis was made of the discharge pulse shape which enabled the low efficiency of the laser to be explained in terms of poor coupling of the electrical energy into the vibrational levels. And (5) the existing laser resonator code was changed to allow it to run on the Cray XMP under the new operating system.
File Size	119847
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910023366
Archival Resource Key	ark:/13960/t3dz55633
Language	English
Publisher Date	1991-09-01
Access Restriction	Open
Subject Keyword	Lasers And Masers Laser Outputs Vibration Chirp Gas Pressure Computerized Simulation Pulsed Lasers Pressure Dependence Optical Resonators Laser Modes Mathematical Models Optical Radar Frequency Stability Carbon Dioxide Lasers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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