Results 151 to 160 of about 13,727 (206)

Interferometric technique with a reference scale

Applied Optics, 2022
A double interferometer technique is presented. One interferometer generates a reference scale, while the other one is used as a measuring tool. The presented apparatus makes it possible to overcome 2 π ambiguity by monitoring the phase difference at short time or space intervals.
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Laser interferometric techniques in orthopaedics

Journal of Medical Engineering & Technology, 1991
(1991). Laser interferometric techniques in orthopaedics. Journal of Medical Engineering & Technology: Vol. 15, No. 6, pp. 209-221.
J C, Shelton, D M, Katz
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Photodegradation of melanin by an interferometric technique

Optics Letters, 2011
Photodegradation of melanin thin films is investigated for a UVA wavelength of 355 nm and a UVC wavelength of 244 nm. The technique involves interferometric exposure of melanin with two coherent beams from a low-power UV laser. The periodic photodegradation-grating pattern is monitored by diffraction of a second low-power He-Ne laser. Dependence of the
C W, Farley, A, Kassu, A, Sharma
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Coating techniques in optical interferometric metrology

Applied Optics, 1997
In optical interferometry diffuse reflectivity of the surface under study should be high and homogeneous. Application of a white reflective coating can strongly improve measurement results. The optical properties of bronze powder, TiO(2) powder, white Chinese ink, and MgO coatings are discussed.
Dirckx, J.J.J., Decraemer, W.F.
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The research of difference interferometric SAR technique

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
This paper discusses several processing algorithms of D-InSAR based on experience accumulated by our predecessors, and puts forward a new method, "new" 4 pass D-InSAR, with its formula.
Jingfa Zhang, Qiming Qin
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An interferometric technique to study capillary waves

Advances in Colloid and Interface Science, 2017
We describe a new interferometric technique to study gas-liquid and liquid-liquid interfaces. Bubbles and drops are subjected to an alternating electric field which excites capillary oscillations at the interface, if charged. Bubble or drop deformation is detected by the change of the internal optical path of a laser beam crossing perpendicular to the ...
Cantu', Laura, RAUDINO, Antonio, Corti, Mario   +2 more
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Interferometric multi-look techniques for SAR data

IEEE International Geoscience and Remote Sensing Symposium, 2003
This paper addresses the benefits of the spectral domain multi-look approach for SAR interferometry. A comparison with the wide spread spatial averaging filter is included in the beginning. Next, it is shown that the flexibility of the spectral domain multi-look technique can be used for improved motion compensation and further for precisely updated ...
Scheiber, R., Bothale, V.M.
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Hologram repositioning by an interferometric technique

Applied Optics, 1979
An interferometric technique for hologram repositioning is described where the hologram is compared with the interference pattern of the reference and object waves. Analytical expressions to evaluate the accuracy of the repositioning are presented for the method. Two applications of the method in metrology for micromovement measurements are proposed.
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