نتایج جستجو برای: interferometry

تعداد نتایج: 11315  

2004
John W. Pyhtila Neil G. Terry Adam Wax

We describe results of calibration experiments using a new angle-resolved low coherence interferometry system. Light scattered from a polystyrene microsphere sample are compared with Mie Theory predictions to determine the size of the particles. © 2003 Optical Society of America OCIS codes: Low coherence interferometry, light scattering spectroscopy.

1998
Q. H. Zhang

Any-order pion inclusive distribution for a chaotic source in high energy collisions are given which can be used in both theory and experiment to analyze any-order pion interferometry. Multi-pion correlations effects on twopion and three-pion interferometry are discussed. PACS number(s): 13.85 Hd, 05.30Jp, 12.40 Ee. Hanbury-Brown and Twiss [1] were the first who applied the Bose-Einstein (BE) c...

2002
J. Gryzagoridis

Optical Non-Destructive Evaluation (NDE) laser based methods include among others, Holographic Interferometry, its subsequent development into Electronic Speckle Pattern Interferometry ( ESPI ), and another speckle technique known as Shearography. These laser based methods are very attractive in that they provide full field view non-contacting means of determining material conditions, in engine...

2012
Gerard Llort-Pujol Thierry Chonavel

Current high-resolution side scan and multibeam sonars produce very large data sets. However, conventional interferometry-based bathymetry algorithms underestimate the potential information of such soundings, generally because they use small baselines to avoid phase ambiguity. Moreover, these algorithms limit the triangulation capabilities of multibeam echosounders to the detection of one sampl...

2006
G. T. Schuster Ruiqing He

Seismic interferometry is a new field in seismology that is finding many useful applications in exploration geophysics (Rickett and Claerbout, 1999; Schuster, 2001; Yu and Schuster, 2006; Wapenaar et al., 2002; Wapenaar, 2004; Wapenaar et al., 2005; Calvert et al., 2004 and others) Analogous to optical interferometry, seismic interferometry estimates the detailed properties of an elastic medium...

Journal: :Applied optics 2013
Igor Alexeenko Jean-François Vandenrijt Giancarlo Pedrini Cédric Thizy Birgit Vollheim Wolfgang Osten Marc P Georges

We describe three different interferometric techniques (electronic speckle pattern interferometry, digital holographic interferometry, and digital shearography), using a long-wave infrared radiation produced by a CO(2) laser and recorded on a microbolometer array. Experimental results showing how these methods can be used for nondestructive testing are presented. Advantages and disadvantages of...

2000
S. K. Saha S. Morel

This article is a sort of sequel of the earlier extensive review by Saha (1999a) where emphasis was laid down on the ground based single aperture, as well as on the working long baseline optical interferometers (LBI) situated at the various observatories across the globe that are producing a large amount of astronomical results. Since the future of high resolution astronomy lies with the new ge...

2010
Kees Wapenaar Evert Slob Roel Snieder Andrew Curtis

In part II of this two-part tutorial we review the underlying theory of seismic interferometry and discuss various new advances. In the 1990’s the method of time-reversed acoustics was developed. This method employs the fact that the acoustic wave equation for a lossless medium is invariant for time-reversal. When ultrasonic responses recorded by piezoelectric transducers are reversed in time a...

2005
Jim Hough Sheila Rowan

Results are now appearing from the first generation of long baseline gravitational wave detectors that use laser interferometry for motion sensing. In this short review the history of the field will be briefly discussed, and the principles of the novel laser interferometry developed will be outlined in the context of present and future instruments.

2001
Gerhard Krieger Hauke Fiedler David Hounam Alberto Moreira

The performance and capabilities of a bistatic spaceborne synthetic aperture radar (SAR) are analyzed, where the transmitter and receiver are in different orbits. Such a configuration may be optimized for a broad range of applications like frequent monitoring, wide swath imaging, single-pass crosstrack interferometry, along-track interferometry, resolution enhancement or radar tomography.

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