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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 23 — Dec. 1, 2008
  • pp: 2725–2727

Optical detection of terahertz using nonlinear parametric upconversion

M. Jalal Khan, Jerry C. Chen, and Sumanth Kaushik  »View Author Affiliations


Optics Letters, Vol. 33, Issue 23, pp. 2725-2727 (2008)
http://dx.doi.org/10.1364/OL.33.002725


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Abstract

We extend our work to perform sensitive, room-temperature optical detection of terahertz (THz) by using nonlinear parametric upconversion. THz radiation at 700 GHz is mixed with pump light at 1550 nm in a bulk GaAs crystal to generate an idler wave at 1555.6 nm . The idler is separated, coupled into optical fiber, and detected using a gated Geiger-mode avalanche photodiode. The resulting THz detector has a power sensitivity of 4.5 pW Hz and a timing resolution of 1 ns .

© 2008 Optical Society of America

OCIS Codes
(040.0040) Detectors : Detectors
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.7220) Nonlinear optics : Upconversion
(230.4320) Optical devices : Nonlinear optical devices

ToC Category:
Detectors

History
Original Manuscript: June 10, 2008
Manuscript Accepted: October 7, 2008
Published: November 18, 2008

Citation
M. Jalal Khan, Jerry C. Chen, and Sumanth Kaushik, "Optical detection of terahertz using nonlinear parametric upconversion," Opt. Lett. 33, 2725-2727 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-23-2725

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