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Terahertz single-shot quadrature phase-shifting interferometry |
Optics Letters, Vol. 37, Issue 19, pp. 4044-4046 (2012)
http://dx.doi.org/10.1364/OL.37.004044
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Abstract
A single-shot quadrature phase-shifting interferometry architecture is presented that is applicable to antenna coupled detector technologies. The method is based on orthogonally polarized object and reference beams and on linear and circular polarization sensitive antennas in space-division multiplexing. The technique can be adapted to two-, three-, and four-step and Gabor holography recordings. It is also demonstrated that the space-division multiplexing does not necessarily cause sparse sampling. A sub-THz detector array is presented containing multiple on-chip antennas and FET plasma wave detectors implemented in a 90 nm complementary metal-oxide semiconductor technology. As an example, two-step phase-shifting reconstruction results are given at 360 GHz.
© 2012 Optical Society of America
OCIS Codes
(260.5430) Physical optics : Polarization
(040.2235) Detectors : Far infrared or terahertz
(100.3175) Image processing : Interferometric imaging
(230.6046) Optical devices : Smart pixel systems
ToC Category:
Image Processing
History
Original Manuscript: June 28, 2012
Revised Manuscript: August 16, 2012
Manuscript Accepted: August 19, 2012
Published: September 24, 2012
Citation
Péter Földesy, "Terahertz single-shot quadrature phase-shifting interferometry," Opt. Lett. 37, 4044-4046 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-19-4044
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