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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 17 — Aug. 22, 2005
  • pp: 6497–6503

Imaging with THz quantum cascade lasers using a Schottky diode mixer

Stefano Barbieri, Jesse Alton, Colin Baker, Thomas Lo, Harvey E. Beere, and David Ritchie  »View Author Affiliations


Optics Express, Vol. 13, Issue 17, pp. 6497-6503 (2005)
http://dx.doi.org/10.1364/OPEX.13.006497


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Abstract

An imaging system in reflection geometry based on a multimode 2.9 THz quantum cascade laser as radiation source is reported. The beating between neighbouring longitudinal modes is detected using a room temperature point-contact Schottky diode as mixing element. We show that the technique can, in principle, give a dynamic range of 60 dB with a time constant of ~ 10 μs.

© 2005 Optical Society of America

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.5960) Lasers and laser optics : Semiconductor lasers

ToC Category:
Research Papers

History
Original Manuscript: June 16, 2005
Revised Manuscript: August 8, 2005
Published: August 22, 2005

Citation
Stefano Barbieri, Jesse Alton, Colin Baker, Thomas Lo, Harvey Beere, and David Ritchie, "Imaging with THz quantum cascade lasers using a Schottky diode mixer," Opt. Express 13, 6497-6503 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-17-6497


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References

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  24. The 35 dBm residual dynamic range results from resolution bandwidth of 100 kHz used in the experiment, yielding a dynamic range of 70 dBm.
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