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Improving weak-signal identification via predetection background suppression by a pixel-level, surface-wave enabled dark-field aperture

Zheng, Guoan and Yang, Changhuei (2010) Improving weak-signal identification via predetection background suppression by a pixel-level, surface-wave enabled dark-field aperture. Optics Letters, 35 (15). pp. 2636-2638. ISSN 0146-9592. https://resolver.caltech.edu/CaltechAUTHORS:20100817-110023102

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Abstract

We report the successful implementation of a surface-wave enabled dark-field aperture (SWEDA) directly on a complementary metal-oxide semiconductor sensor pixel (2.2μm). This SWEDA pixel allows predetection cancellation of a uniform coherent background. We show that the signal-to-noise ratio (SNR) of the SWEDA pixel is better than that of a single undressed pixel over a significant range of signal-to-background ratio (SBR). For a small SBR value (SBR=0.001, background intensity=3.96W/m^2, integration time=5ms), we further demonstrate that a SWEDA pixel can detect a weak localized signal buried in a high background, while conventional postdetection background subtraction cannot (improved SNR=2.2 versus SNR=0.26).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1364/OL.35.002636DOIArticle
http://www.opticsinfobase.org/abstract.cfm?URI=ol-35-15-2636PublisherArticle
ORCID:
AuthorORCID
Yang, Changhuei0000-0001-8791-0354
Additional Information:© 2010 Optical Society of America. Received April 13, 2010; revised June 24, 2010; accepted July 4, 2010; posted July 13, 2010 (Doc. ID 126951); published July 29, 2010.
Issue or Number:15
Classification Code:OCIS codes: 240.6680, 250.0040, 250.5403, 120.3180
Record Number:CaltechAUTHORS:20100817-110023102
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20100817-110023102
Official Citation:Guoan Zheng and Changhuei Yang, "Improving weak-signal identification via predetection background suppression by a pixel-level, surface-wave enabled dark-field aperture," Opt. Lett. 35, 2636-2638 (2010) http://www.opticsinfobase.org/abstract.cfm?URI=ol-35-15-2636
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19470
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:17 Aug 2010 18:32
Last Modified:09 Mar 2020 13:19

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