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Published October 2016 | Supplemental Material + Accepted Version + Submitted + Published
Journal Article Open

Glare suppression by coherence gated negation

Abstract

Imaging of a weak target hidden behind a scattering medium can be significantly confounded by glare. We report a method, termed coherence gated negation (CGN), that uses destructive optical interference to suppress glare and allow improved imaging of a weak target. As a demonstration, we show that by permuting through a set range of amplitude and phase values for a reference beam interfering with the optical field from the glare and target reflection, we can suppress glare by an order of magnitude, even when the optical wavefront is highly disordered. This strategy significantly departs from conventional coherence gating methods in that CGN actively "gates out" the unwanted optical contributions while conventional methods "gate in" the target optical signal. We further show that the CGN method can outperform conventional coherence gating image quality in certain scenarios by more effectively rejecting unwanted optical contributions.

Additional Information

© 2016 Optical Society of America. Received 11 July 2016; revised 6 September 2016; accepted 9 September 2016 (Doc. ID 270225); published 5 October 2016. Acknowledgment. The authors thank Dr. Mooseok Jang and Ms. Michelle Cua for helpful discussions. J. B. acknowledges support from the National Institute of Biomedical Imaging and Bioengineering under a Ruth L. Kirschstein National Research Service Award and from the Donna and Benjamin M. Rosen Bioengineering Center. Funding. National Institutes of Health (NIH)(1U01NS090577-01); GIST-Caltech Collaborative Research Proposal (CG2016). National Institute of Biomedical Imaging and Bioengineering (NIBIB) (1F31EB021153-01); Donna and Benjamin M. Rosen Bioengineering Center.

Attached Files

Published - optica-3-10-1107.pdf

Accepted Version - nihms835229.pdf

Submitted - 1606.04570.pdf

Supplemental Material - 1107.AVI

Supplemental Material - optica-3-10-1107-supp1.pdf

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