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Scattering of a tightly focused beam by an optically trapped particle.
Near-forward scattering of an optically trapped 5-mum-radius polystyrene latex sphere by the trapping beam was examined both theoretically and experimentally. Since the trapping beam is tightly… Expand
Sources of error in heterodyne moire deflectometry.
Alignment problems, and the accompanying errors, in heterodyne moire deflectometry are considered. A change in the x-directed offset between two states of a phase object causes a constant phase… Expand
Evaluation of mechanical modal characteristics using optical techniques
- J. Lekki, G. Adamovsky, P. Flanagan, K. E. Weiland
- Materials Science, Engineering
- SPIE Smart Structures and Materials…
- 12 July 2002
In this paper the sensitivity of embedded fiber optic sensors to changes in modal characteristics of plates is discussed. In order to determine the feasibility of embedded fiber Bragg gratings for… Expand
Inspection of Space Station Cold Plate Using Visual and Automated Holographic Techniques
INSPECTION OF SPACE STATION COLD PLATE USINGVISUAL AND AUTOMATED HOLOGRAPHIC TECHNIQUESArthur J. DeckerMatthew E. MelisKenneth E. WeilandNational Aeronautics and Space AdministrationGlenn Research… Expand
Mode sorter and detector based on photon orbital angular momentum
Photons were generated possessing orbital angular momentum (OAM) in the form of Laguerre-Gaussian (LG) laser modes. Three Mach-Zehnder interferometer systems, with the use of Dove prisms, were… Expand
Neural-network-directed alignment of optical systems using the laser-beam spatial filter as an example
Sensitivity and calibration of nondestructive evaluation method that uses neural-net processing of characteristic fringe patterns
This paper answers some performance and calibration questions about a non-destructive-evaluation (NDE) procedure that uses artificial neural networks to detect structural damage or other changes from… Expand
Optical Levitation of Micro-Scale Particles in Air
Summary Success has been achieved using a radiation pressure gradient to levitate microscale particles in air for as long as four hours. This work is performed as a precursor to the development of a… Expand
Technical Neural-Network-Directed Alignment of Optical Systems Using the Laser-Beare Spatial Filter as an Example
Neural-Net Based Optical NDE Method for Structural Health Monitoring
ABSTRACT This paper answers some performance and calibration questions about a non-destructive-evaluation (NDE) procedure that uses artificial neural networks to detect structural damage or other… Expand