Dispersion-free optical coherence depth sensing with a spatial frequency comb generated by an angular spectrum modulator.
TLDR
This work generates a spatial frequency comb by modulating the incident angle of a monochromatic plane wave with a spatial light modulator (SLM) to enable dispersion-free depth sensing that is free from mechanical moving components.Abstract:
As an alternative to the conventional optical frequency comb technique, a spatial frequency comb technique is proposed for dispersionfree optical coherence depth sensing. Instead of generating an optical frequency comb over a wide range of time spectrum, we generate a spatial frequency comb by modulating the incident angle of a monochromatic plane wave with a spatial light modulator (SLM). The use of monochromatic light combined with the SLM enables dispersion-free depth sensing that is free from mechanical moving components.read more
Citations
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Spatial and temporal coherence effects in interference microscopy and full‐field optical coherence tomography
TL;DR: In this article, the coherence effects in low-coherence optical microscopy are reviewed and the interplay between longitudinal spatial coherence and temporal coherence is discussed in detail particularly when high numerical apertures are used.
Journal ArticleDOI
3-D coherence holography using a modified Sagnac radial shearing interferometer with geometric phase shift.
TL;DR: In this paper, a modified Sagnac-type radial shearing interferometer with geometric phase shift was used to reconstruct off-axis 3D objects with depth information, which can be visualized with a controllable magnification.
Journal ArticleDOI
Vectorial coherence holography.
TL;DR: A technique for controlling and synthesizing optical fields with desired elements of coherence-polarization matrix is proposed and experimentally demonstrated.
Journal ArticleDOI
Coherence holography by achromatic 3-D field correlation of generic thermal light with an imaging Sagnac shearing interferometer
TL;DR: 3-D image reconstruction of coherence holography with generic thermal light is experimentally demonstrated, for the first time to the authors' knowledge, with a new technique for achromatic 3-D field correlation that makes use of the characteristics of both axial and lateral magnifications of imaging through a common-path Sagnac shearing interferometer.
Journal ArticleDOI
Multi-gigahertz frequency comb-based interferometry using frequency-variable supercontinuum generated by optical pulse synthesizer
TL;DR: It was demonstrated that the MGFC-based interferometer with the novel SC light source has the potential for application in a high speed full-field 3-D metrology.
References
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Optical coherence tomography
David Huang,Eric A. Swanson,Charles P. Lin,Joel S. Schuman,William G. Stinson,Warren Chang,Michael R. Hee,Thomas J. Flotte,Kenton W. Gregory,Carmen A. Puliafito,James G. Fujimoto +10 more
TL;DR: OCT as discussed by the authors uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way analogous to ultrasonic pulse-echo imaging.
Book ChapterDOI
Optical Coherence Tomography
Eric A. Swanson,J. Izatt,M. Bee,David Huang,Charles P. Lin,Carmen A. Puliafito,Carmen A. Puliafito,James G. Fujimoto +7 more
TL;DR: Optical coherence tomography (OCT) has developed rapidly since its first realisation in medicine and is currently an emerging technology in the diagnosis of skin disease as mentioned in this paper, where OCT is an interferometric technique that detects reflected and backscattered light from tissue.
Journal ArticleDOI
Three-dimensional sensing of rough surfaces by coherence radar
TL;DR: A three-dimensional sensor designed primarily for rough objects that supplies an accuracy that is limited only by the roughness of the object surface, which differs from conventional optical systems in which the depth accuracy is limited by the aperture.
Journal ArticleDOI
Profilometry with a coherence scanning microscope.
Byron S. Lee,Timothy C. Strand +1 more
TL;DR: This approach has two significant implications for profilometry: the longitudinal resolution is decoupled from the lateral resolution, and interference effects can be used to further enhance the longitudinalresolution.
Journal ArticleDOI
Dispersive interferometric profilometer
Johannes Schwider,Liang Zhou +1 more
TL;DR: A one-dimensional method for the absolute determination of the path difference in interferometers to obtain unique surface profiles with high accuracy is discussed.