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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 10 — May. 15, 2013
  • pp: 1654–1656

Broadband terahertz wave generation from a MgO:LiNbO3 ridge waveguide pumped by a 1.5 μm femtosecond fiber laser

Shuzhen Fan, Hajime Takeuchi, Toshihiko Ouchi, Kei Takeya, and Kodo Kawase  »View Author Affiliations


Optics Letters, Vol. 38, Issue 10, pp. 1654-1656 (2013)
http://dx.doi.org/10.1364/OL.38.001654


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Abstract

Cherenkov phase-matched terahertz (THz) wave generation from a MgO:LiNbO3 ridge waveguide was studied using optical rectification. Pumping was achieved using 20 and 60  fs laser pulses from a fiber laser centered at 1.56 μm. Time-domain spectroscopy (TDS) results showed a single-cycle pulse with 20  fs pulse pumping and a near-single-cycle pulse with 60  fs pulse pumping. The spectrum covered the range of 0.1–7 THz, with a signal-to-noise ratio of over 50  dB. The output power measured by a Si bolometer and a deuterated triglycine sulfate pyroelectric detector is shown and compared to that of a commercial photoconductive antenna. This system is believed to be a promising THz source for low-cost, compact, robust, and highly integrated TDS, THz imaging, and tomography systems.

© 2013 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Spectroscopy

History
Original Manuscript: March 4, 2013
Revised Manuscript: April 11, 2013
Manuscript Accepted: April 16, 2013
Published: May 9, 2013

Virtual Issues
Vol. 8, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Shuzhen Fan, Hajime Takeuchi, Toshihiko Ouchi, Kei Takeya, and Kodo Kawase, "Broadband terahertz wave generation from a MgO:LiNbO3 ridge waveguide pumped by a 1.5 μm femtosecond fiber laser," Opt. Lett. 38, 1654-1656 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-10-1654


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