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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 5 — Feb. 28, 2011
  • pp: 4428–4437

Widely and continuously tunable terahertz synthesizer traceable to a microwave frequency standard

Takeshi Yasui, Hisanari Takahashi, Kohji Kawamoto, Yutaka Iwamoto, Kaoru Arai, Tsutomu Araki, Hajime Inaba, and Kaoru Minoshima  »View Author Affiliations

Optics Express, Vol. 19, Issue 5, pp. 4428-4437 (2011)

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We constructed a widely and continuously tunable terahertz frequency synthesizer traceable to a hydrogen maser linked to coordinated universal time. Photomixing of two optical frequency synthesizers, linked to the hydrogen maser via dual optical frequency combs, gave this THz synthesizer frequency uncertainty of 10−12. To demonstrate the potential of wide and continuous tunability in the THz synthesizer, we tuned its output frequency up to 50 GHz discretely and 1.26 GHz continuously in the F-band while maintaining the unprecedented frequency uncertainty by using a uni-traveling-carrier photodiode as a photomixer. This THz synthesizer will be a powerful tool for broadband, high-precision THz spectroscopy and THz frequency metrology.

© 2011 OSA

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(140.3425) Lasers and laser optics : Laser stabilization
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: January 28, 2011
Revised Manuscript: February 17, 2011
Manuscript Accepted: February 17, 2011
Published: February 22, 2011

Takeshi Yasui, Hisanari Takahashi, Kohji Kawamoto, Yutaka Iwamoto, Kaoru Arai, Tsutomu Araki, Hajime Inaba, and Kaoru Minoshima, "Widely and continuously tunable terahertz synthesizer traceable to a microwave frequency standard," Opt. Express 19, 4428-4437 (2011)

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