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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 16 — Aug. 1, 2011
  • pp: 15397–15403

Tunable continuous-wave terahertz generation/detection with compact 1.55 μm detuned dual-mode laser diode and InGaAs based photomixer

Namje Kim, Sang-Pil Han, Hyunsung Ko, Young Ahn Leem, Han-Cheol Ryu, Chul Wook Lee, Donghun Lee, Min Yong Jeon, Sam Kyu Noh, and Kyung Hyun Park  »View Author Affiliations


Optics Express, Vol. 19, Issue 16, pp. 15397-15403 (2011)
http://dx.doi.org/10.1364/OE.19.015397


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Abstract

We demonstrate a tunable continuous-wave (CW) terahertz (THz) homodyne system with a novel detuned dual-mode laser diode (DML) and low-temperature-grown (LTG) InGaAs photomixers. The optical beat source with the detuned DML showed a beat frequency tuning range of 0.26 to over 1.07 THz. Log-spiral antenna integrated LTG InGaAs photomixers are used as THz wave generators and detectors. The CW THz radiation frequency was continuously tuned to over 1 THz. Our results clearly show the feasibility of a compact and fast scanning CW THz spectrometer consisting of a fiber-coupled detuned DML and photomixers operating in the 1.55-μm range.

© 2011 OSA

OCIS Codes
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5960) Lasers and laser optics : Semiconductor lasers
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 25, 2011
Revised Manuscript: June 13, 2011
Manuscript Accepted: July 9, 2011
Published: July 27, 2011

Citation
Namje Kim, Sang-Pil Han, Hyunsung Ko, Young Ahn Leem, Han-Cheol Ryu, Chul Wook Lee, Donghun Lee, Min Yong Jeon, Sam Kyu Noh, and Kyung Hyun Park, "Tunable continuous-wave terahertz generation/detection with compact 1.55 μm detuned dual-mode laser diode and InGaAs based photomixer," Opt. Express 19, 15397-15403 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-16-15397


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