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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 6 — Jun. 27, 2013

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)

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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:

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

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)

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