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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 19 — Oct. 1, 2005
  • pp: 2563–2565

Real-time, continuous-wave terahertz imaging by use of a microbolometer focal-plane array

Alan Wei Lee and Qing Hu  »View Author Affiliations

Optics Letters, Vol. 30, Issue 19, pp. 2563-2565 (2005)

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Real-time, continuous-wave terahertz imaging is demonstrated with a 10 mW, 2.52 THz (118.8 µm) far-infrared gas laser and a 160×120 element microbolometer camera. The microbolometer camera is designed for wavelengths of 7.5-14 µm but retains sensitivity at terahertz (THz) frequencies. The setup has no moving parts, and transmission-mode THz images can be obtained at the video rate of 60 frames/s. The peak signal-to-noise ratio is estimated to be 13 dB for a single frame of video, acquired in 16 ms. With this setup, THz imaging through a FedEx envelope is demonstrated, showing the feasibility of real-time mail screening.

© 2005 Optical Society of America

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(110.3080) Imaging systems : Infrared imaging
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers

ToC Category:
Imaging Systems

Alan Wei Lee and Qing Hu, "Real-time, continuous-wave terahertz imaging by use of a microbolometer focal-plane array," Opt. Lett. 30, 2563-2565 (2005)

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