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Laser diagnostic methods - A summary
16th Fluid and Plasmadynamics Conference, 1983This is a summary and discussion of the state of the art in the use of laser diagnostics in fluid and plasma dynamics. This will encompass: interferometry, scattering, spectroscopy, and velocimetry. Examples of such applications will be provided in the area of fluid dynamics of particle generation and breakup, analysis of three-dimensional density ...
J. TROLINGER +3 more
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1974 International Conference on Submillimeter Waves and Their Applications, 1974
Diagnostics of the cw-HCN-laser plasma with field and temperature probe, a mass spectrometer, as well as related exoeriments prove that H 2 or D 2 molecules are required as collision partners of the HCN molecules. The formation of laser-active HCN molecules on the tube wall influence the radial gain profile.
H. J. Schötzau, B. Adam, F. Kneubühl
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Diagnostics of the cw-HCN-laser plasma with field and temperature probe, a mass spectrometer, as well as related exoeriments prove that H 2 or D 2 molecules are required as collision partners of the HCN molecules. The formation of laser-active HCN molecules on the tube wall influence the radial gain profile.
H. J. Schötzau, B. Adam, F. Kneubühl
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Femtosecond laser pulse diagnostics
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1992Special instrumentation is required to measure and analyze laser pulses below one nanosecond because of the limitations of standard instrumentation used to measure real-time signals. We have designed and developed an instrument with unique features to measure the pulsewidth of single laser pulses below one nanosecond using the standard autocorrelation ...
Clarence P. Cain, W. P. Roach
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Cinematographic laser combustion diagnostics
Laser Applications to Chemical, Security and Environmental Analysis, 2008Cinematographic PIV and OH PLIF operated at repetition rates up to 5 kHz are applied simultaneously to identify flow structures that entail extinction in a turbulent opposed jet flame.
Heeger, Christof +4 more
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1980
It is often necessary to characterize the beam emitted from a laser to define potential exposure conditions. The beam’s characteristics may be required near the output of the laser, at some considerable distance from the laser after it has been collimated or focused, or simply at some distance after the beam has left the laser cavity as a “ray beam ...
David Sliney, Myron Wolbarsht
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It is often necessary to characterize the beam emitted from a laser to define potential exposure conditions. The beam’s characteristics may be required near the output of the laser, at some considerable distance from the laser after it has been collimated or focused, or simply at some distance after the beam has left the laser cavity as a “ray beam ...
David Sliney, Myron Wolbarsht
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Applied Physics Letters, 1972
From an interferometric study of the medium in a 10.6-μ transverse electric discharge pulsed laser amplifier, a time history of the index of refraction is presented from t=0 to t=21.5 μsec. These data agree favorably with the predictions based on a linearized hydrodynamic model for pulsed heat deposition in a gas by a row of discrete discharge pins ...
R. W. O'Neil +3 more
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From an interferometric study of the medium in a 10.6-μ transverse electric discharge pulsed laser amplifier, a time history of the index of refraction is presented from t=0 to t=21.5 μsec. These data agree favorably with the predictions based on a linearized hydrodynamic model for pulsed heat deposition in a gas by a row of discrete discharge pins ...
R. W. O'Neil +3 more
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INFRARED PLASMA DIAGNOSTICS WITH LASERS
Infrared Physics, 1976Abstract Infrared lasers have rendered possible measurements of plasma parameters in a range not accessible using either optical or microwave techniques. Diagnostic methods based on the refraction and scattering of radiation by free electrons are discussed.
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Diagnostics for Laser Accelerators
AIP Conference Proceedings, 2004This tutorial paper discusses, at a basic level, some of the diagnostics used in plasma accelerators laboratories. Covered are measurements of laser beams, using probe laser beams to characterize the plasma itself (as opposed to the plasma wave accelerating structure) in various ways, including density fluctuations in the plasma and also static or near‐
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LASER-BASED COMBUSTION DIAGNOSTICS
Optics and Photonics News, 1996Laser-based spectroscopy and scattering methods are now important tools for researchers trying to understand the combustion process.
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2017
An objective and accurate diagnosis is an essential and key component in the formulation of safe, comprehensive management, and treatment of dental patients. The framework of such diagnosis should be based on clear criteria, applied with sound diagnostic methodologies which can assess, grade and detect the presenting symptoms of any individual case ...
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An objective and accurate diagnosis is an essential and key component in the formulation of safe, comprehensive management, and treatment of dental patients. The framework of such diagnosis should be based on clear criteria, applied with sound diagnostic methodologies which can assess, grade and detect the presenting symptoms of any individual case ...
openaire +1 more source