OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 19 — Jul. 1, 2010
  • pp: E106–E120

Passive terahertz camera for standoff security screening

Erich Grossman, Charles Dietlein, Juha Ala-Laurinaho, Mikko Leivo, Leif Gronberg, Markus Gronholm, Petteri Lappalainen, Anssi Rautiainen, Aleksi Tamminen, and Arttu Luukanen  »View Author Affiliations


Applied Optics, Vol. 49, Issue 19, pp. E106-E120 (2010)
http://dx.doi.org/10.1364/AO.49.00E106


View Full Text Article

Enhanced HTML    Acrobat PDF (1733 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We describe the construction and performance of a passive, real-time terahertz camera based on a modular, 64-element linear array of cryogenic hotspot microbolometers. A reflective conical scanner sweeps out a 2 m × 4 m ( vertical × horizontal ) field of view (FOV) at a standoff range of 8 m . The focal plane array is cooled to 4 K in a closed cycle refrigerator, and the signals are detected on free-standing bridges of superconducting Nb or NbN at the feeds of broadband planar spiral antennas. The NETD of the focal-plane array, referred to the target plane and to a frame rate of 5 s 1 , is 1.25 K near the center of the array and 2 K overall.

© 2010 Optical Society of America

OCIS Codes
(040.2235) Detectors : Far infrared or terahertz
(110.6795) Imaging systems : Terahertz imaging

History
Original Manuscript: December 22, 2009
Revised Manuscript: June 3, 2010
Manuscript Accepted: June 9, 2010
Published: June 28, 2010

Citation
Erich Grossman, Charles Dietlein, Juha Ala-Laurinaho, Mikko Leivo, Leif Gronberg, Markus Gronholm, Petteri Lappalainen, Anssi Rautiainen, Aleksi Tamminen, and Arttu Luukanen, "Passive terahertz camera for standoff security screening," Appl. Opt. 49, E106-E120 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-19-E106

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you wish to use one of your free member downloads to view the figures, click "Enhanced HTML" above and access the figures from the article itself or from the navigation tab.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited