dc.contributor.author |
Lo, Yat |
en |
dc.contributor.author |
Leonhardt, Rainer |
en |
dc.date.accessioned |
2012-05-28T01:08:44Z |
en |
dc.date.issued |
2008 |
en |
dc.identifier.citation |
Optics Express 16(20):15991-15998 2008 |
en |
dc.identifier.issn |
1094-4087 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/18660 |
en |
dc.description.abstract |
We present novel designs for aspheric lenses used in terahertz (THz) imaging. As different surfaces result in different beam shaping properties and in different losses from reflection and absorption, the resultant imaging resolution (i.e. the focal spot size) depends critically on the design approach. We evaluate the different lens designs using Kirchhoff’s scalar diffraction theory, and test the predictions experimentally. We also show that our lenses can achieve sub-wavelength resolution. While our lens designs are tested with THz radiation, the design considerations are applicable also to other regions of the electro-magnetic spectrum. |
en |
dc.description.uri |
http://www.opticsexpress.org/abstract.cfm?uri=oe-16-20-15991 |
en |
dc.publisher |
Optical Society of America |
en |
dc.relation.ispartofseries |
Optics Express |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/1094-4087/ |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.title |
Aspheric Lenses for Terahertz Imaging |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1364/OE.16.015991 |
en |
pubs.issue |
20 |
en |
pubs.begin-page |
15991 |
en |
pubs.volume |
16 |
en |
dc.rights.holder |
Copyright: Optical Society of America |
en |
dc.identifier.pmid |
18825237 |
en |
pubs.end-page |
15998 |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
90343 |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
Physics |
en |
pubs.record-created-at-source-date |
2010-09-01 |
en |
pubs.dimensions-id |
18825237 |
en |