3 edition of Effect of refractive index variation on two-wavelength interferometry for fluid measurements found in the catalog.
Effect of refractive index variation on two-wavelength interferometry for fluid measurements
by National Aeronautics and Space Administration, Lewis Research Center, National Technical Information Service, distributor in [Cleveland, Ohio], Springfield, VA
Written in English
|Statement||Carolyn R. Mercer.|
|Series||NASA/TM -- 1998-207925., NASA technical memorandum -- 207925.|
|Contributions||Lewis Research Center.|
|The Physical Object|
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The effect of stable menisci shapes on the zinc distribution in CdZnTe crystals grown by dewetted Bridgman technique Liliana Braescu Proc. SPIE , Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V, E (17 September ); doi: / The emerging technology of spectral filter array (SFA) cameras has great potential for clinical applications, due to its unique capability for real time spectral imaging, at a reasonable cost. This makes such cameras particularly suitable for quantification of dynamic processes such as skin oxygenation. Skin oxygenation measurements are useful for burn wound healing assessment and as an Cited by: 1.
Transparent refractive media are invisible but for the distortions they impart upon a background scene. Computerised acquisition of such media can therefore often not be performed via traditional scanning methods. By capturing refracted backgrounds rather than reflections off the target media itself, we develop techniques for reconstructing the intervening refractive index distribution for Author: Bradley Atcheson. This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation.
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Effect of refractive index variation on two-wavelength interferometry for fluid measurements Carolyn R. Mercer NASA Lewis Research Center Abstract Two wavelength interferometry can in principle be used to measure changes in both temperature and concentration in a fluid, but measurement errors may be large if the fluid dispersion is Size: KB.
Effect of refractive index variation on two-wavelength interferometry for fluid measurements (OCoLC) Microfiche version: Mercer, Carolyn R. (Carolyn Regan).
Effect of refractive index variation on two-wavelength interferometry for fluid measurements (OCoLC) Material Type. Effect of refractive index variation on two-wavelength interferometry for fluid measurements (OCoLC) Online version: Mercer, Carolyn R.
(Carolyn Regan). Effect of refractive index variation on two-wavelength interferometry for fluid measurements (OCoLC) Material Type: Government publication, National government publication.
Carolyn R. Mercer has written: 'Effect of refractive index variation on two-wavelength interferometry for fluid measurements' -- subject(s): Infrared interferometers, Fersnel diffraction. Vol number 1 OPTICS COMMUNICATIONS 1 December MEASUREMENT OF THE GROUP REFRACTIVE INDEX OF AIR BY TWO-WAVELENGTH INTERFEROMETRY Hirokazu MATSUMOTO National Research Laboratory of Metrology, I-I-4 Umezono Sakura-mura, Niihari-gun, lbarakiJapan Received 5 August Revised manuscript received 25 September The Cited by: 4.
The basic equation of frequency-sweeping-interferometry (FSI) as discussed in chapter 8 of this book, for example, offers direct access to the group refractive index by its basic equation Yang et al use a classical refractometer with an evacuated reference beam path and a.
A measurement method based on interferometry with two different reference cavity lengths is presented and applied in air refractive index measurement in which the two cavity lengths and a laser wavelength are combined to generate two wavelength equivalents of cavity.
Corresponding calculation equations are derived, and the optical path configuration is designed, which is inspired by the. An experimental test system capable of measuring the refractive index variation of a salt-water solution at two wavelengths, with temporally varying temperature and concentration, is constructed by using a Mach–Zehnder interferometer.
An experimental data-reduction method is developed to take the data generated in the experimental test program and to determine the variation of the refractive.
We review the progress made for compensation of the refractive index of air in laser-based distance measurements in the field of precision engineering.
First, a comprehensive analysis is introduced to clarify how the overall measurement uncertainty is affected by the refractive index of the ambient air, particularly for dimensional metrology and geodetic survey using laser in open-air Cited by: Liquid refraction and dispersion measurements by multiple-beam white-light Newton's fringes Article in Optics & Laser Technology 39(1) February with 12 Reads How we measure 'reads'.
The last contouring method is based on the variation of refractive index between the hologram and its readout. By using similar considerations as above, it comes that a difference of height between two fringes is obtained for some refractive index variation Δ n along the line of sight: () Δ h = λ 2 Δ nAuthor: Marc Georges.
The next eight chapters describe key applications of interferometry: measurements of length, optical testing, studies of refractive index fields, interference microscopy, holographic and speckle.
Calculating thickness and refractive index from full SPR curves. Refractive index, thickness and wavelength at which they are measured form a continuum answer.
Typically, refractive index has to be assumed from literature based on value for bulk of the material and a given wavelength. Interestingly enough, the frequency of the waves does not change as the light moves from air to water.
As we saw in the Review page, the wave's speed v is related to both the frequency f and the wavelength: v = f. Combining the above expression for velocity with the definition of index of refraction, we find a relationship between the wavelength = v/f in a medium and the wavelength 0 = c/f.
Where n is the refractive index of the transmission medium, c is the speed of light in a vacuum ( × m/s), and v is the speed of light in the transmission medium. Typical values of n for glass, such as optical fiber, are between and As a rule, the higher the refractive index, the slower the speed in the transmission.
An example of a two-wavelength distance measurement system is described in an article by Y. Zhu, H. Matsumoto, T. O'ishi, SPIEOptics in Complex Systems, p (), entitled “Long-Arm Two-Color Interferometer For Measuring The Change Of Air Refractive Index.” The system of Zhu et al.
employs a nm wavelength YAG laser and a Cited by: 4. Figure 1. Measurements in a real-scale transparent three-hole diesel nozzle .(a) Back-illuminated high-speed visualization of cavitation at bar injection how a cavitation string connects two holes. (b) Velocity field measured by micro-PIV showing vortex flow around a cavitation string under the same conditions.(c) False-color rendering of frequency of occurrence of Cited by: First, it was assumed that the refractive index of the lipid system will increase with time, and the initial values of the refractive index n 1 were chosen accordingly as, and depending on the time point.
Second, thickness values were varied between 5 and 20 by: 2. * Extensive coverage of the applications of interferometry, such as measurements of length, optical testing, interference microscopy, interference spectroscopy, Fourier-transform spectroscopy, interferometric sensors, nonlinear interferometers, stellar interferometry, and studies of space-time and gravitation.
You can write a book review. Low-coherence tandem interferometer for in-situ measurement of the refractive index Akiko Hirai ; Hirokazu Matsumoto Proc.
SPIEOptical Engineering for Sensing and Nanotechnology (ICOSN ), pg (8 May ); doi: /. Advanced holography -_metrology_and_imaging 1. a uniform background colour is obtained in the camera (Fig. 8c). If variation in refractive index exists in the test section, colour fringes will be seen on the screen.
pp. Desse, J.M., Picart, P. & Tankam, P. (). Digital Three-Color Holographic Interferometry Devoted to Fluid.Optical Engineering (OE) publishes peer-reviewed papers reporting on research, development, and applications of optics, photonics, and imaging science and engineering.Here, the concepts of Sect.
will be combined with those outlined in Sect. Secondly, we intend to study holographic interferometry of phase objects, i.e., the determination of the spatial variation of the index of refraction of a transparent medium.
This topic relates Sects. to Author: Walter Schumann, Jean-Pierre Zürcher, Denis Cuche.