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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 29 — Oct. 10, 2007
  • pp: 7207–7211

Inexpensive detector for terahertz imaging

A. Abramovich, N. S. Kopeika, D. Rozban, and E. Farber  »View Author Affiliations

Applied Optics, Vol. 46, Issue 29, pp. 7207-7211 (2007)

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Glow discharge plasma, derived from direct-current gas breakdown, is investigated in order to realize an inexpensive terahertz (THz) room-temperature detector. Preliminary results for THz radiation show that glow discharge indicator lamps as room-temperature detectors yield good responsivity and noise-equivalent power. Development of a focal plane array (FPA) using such devices as detectors is advantageous since the cost of a glow discharge detector is approximately $ 0.2 $ 0.5 per lamp, and the FPA images will be diffraction limited. The detection mechanism of the glow discharge detector is found to be the enhanced diffusion current, which causes the glow discharge detector bias current to decrease when exposed to THz radiation.

© 2007 Optical Society of America

OCIS Codes
(020.2070) Atomic and molecular physics : Effects of collisions
(040.1880) Detectors : Detection
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.1880) Instrumentation, measurement, and metrology : Detection
(040.2235) Detectors : Far infrared or terahertz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:

Original Manuscript: May 2, 2007
Revised Manuscript: July 30, 2007
Manuscript Accepted: July 30, 2007
Published: October 5, 2007

A. Abramovich, N. S. Kopeika, D. Rozban, and E. Farber, "Inexpensive detector for terahertz imaging," Appl. Opt. 46, 7207-7211 (2007)

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