Physics – Optics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1236..265a&link_type=abstract
INTERNATIONAL CONFERENCE ON ADVANCED PHASE MEASUREMENT METHODS IN OPTICS AND IMAGING. AIP Conference Proceedings, Volume 1236,
Physics
Optics
Optical Modulation, Recording Instruments, Fourier Transform Optics, Holography, Interferometry, Optical Processors, Correlators, And Modulators, Hologram Recording And Readout Methods, Fourier Optics, Holographic Optical Elements, Holographic Gratings, Holographic Interferometry, Other Holographic Techniques
Scientific paper
We present a novel approach to investigate the shape of a diffusely reflecting technical object. It is based on a combination of a multiple-illumination contouring procedure and phase retrieval from a set of intensity measurements. Special consideration is given to the design of the experimental configuration for phase retrieval and the iterative algorithm to extract the 3D phase map. It is mainly based on a phase-only spatial light modulator (SLM) in the Fourier domain of a 4f-imaging system. The SLM is used to modulate the light incident in the Fourier plane with the transfer function of propagation. Thus, a set of consecutive intensity measurements of the wave field scattered by the investigated object in various propagation states can be realized in a common recording plane. In contrast to already existing methods, no mechanical adjustment is required during the recording process and thus the measuring time is considerably reduced. The method is applied to investigate the shape of micro-objects obtained from a metalforming process. Finally, the experimental results are compared to those provided by a standard interferometric contouring procedure.
Agour Mostafa
Falldorf Claas
Huke Philipp
Kopylow Christoph V.
No associations
LandOfFree
Shape Measurement by Means of Phase Retrieval using a Spatial Light Modulator does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Shape Measurement by Means of Phase Retrieval using a Spatial Light Modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shape Measurement by Means of Phase Retrieval using a Spatial Light Modulator will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1801959