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Double edge-diffraction mediated virtual shadow for distance metrology

Double edge-diffraction mediated virtual shadow for distance metrology
Double edge-diffraction mediated virtual shadow for distance metrology

We report a form of double edge-diffraction (DED) for the first time, in which successive diffractive effects between two opaque objects leads to a virtual shadow of one object that protrudes from the shadow of the other. Analogous to classic edge and slit diffractions, the method to observe DED is simple, yet its effect is intriguingly different. Existing sensing techniques cannot measure the distance of highly reflective or absorptive opaque objects. To address this problem in certain scenarios, we propose a new technique based on DED that is the first to work for all opaque objects with well-defined edges.

diffraction, distance, double, edge, measurement, metrology
1367-2630
1-10
Chen, George Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Kang, Yvonne Qiongyue
90dfe5cc-7816-4a2f-b9ac-7c5002304b89
Monro, Tanya M.
198e1e56-0be6-41bb-a2ce-aea4f12965d8
Lancaster, David G.
4c1e2bb1-fa1a-4a42-86eb-58025c753e06
Chen, George Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Kang, Yvonne Qiongyue
90dfe5cc-7816-4a2f-b9ac-7c5002304b89
Monro, Tanya M.
198e1e56-0be6-41bb-a2ce-aea4f12965d8
Lancaster, David G.
4c1e2bb1-fa1a-4a42-86eb-58025c753e06

Chen, George Y., Lee, Timothy, Kang, Yvonne Qiongyue, Monro, Tanya M. and Lancaster, David G. (2018) Double edge-diffraction mediated virtual shadow for distance metrology. New Journal of Physics, 20 (10), 1-10, [103029]. (doi:10.1088/1367-2630/aae5c7).

Record type: Article

Abstract

We report a form of double edge-diffraction (DED) for the first time, in which successive diffractive effects between two opaque objects leads to a virtual shadow of one object that protrudes from the shadow of the other. Analogous to classic edge and slit diffractions, the method to observe DED is simple, yet its effect is intriguingly different. Existing sensing techniques cannot measure the distance of highly reflective or absorptive opaque objects. To address this problem in certain scenarios, we propose a new technique based on DED that is the first to work for all opaque objects with well-defined edges.

Text
Chen 2018 New J. Phys. 20 103029 - Version of Record
Available under License Creative Commons Attribution.
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More information

Accepted/In Press date: 2 October 2018
e-pub ahead of print date: 23 October 2018
Keywords: diffraction, distance, double, edge, measurement, metrology

Identifiers

Local EPrints ID: 426260
URI: http://eprints.soton.ac.uk/id/eprint/426260
ISSN: 1367-2630
PURE UUID: 13136caa-74f8-40d8-94bc-bfd7fddeab60

Catalogue record

Date deposited: 21 Nov 2018 17:30
Last modified: 06 Oct 2020 21:37

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