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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 27, Iss. 8 — Apr. 15, 2002
  • pp: 661–663

Whispering-gallery mode terahertz pulses

Jiangquan Zhang and D. Grischkowsky  »View Author Affiliations


Optics Letters, Vol. 27, Issue 8, pp. 661-663 (2002)
http://dx.doi.org/10.1364/OL.27.000661


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Abstract

We report what is to our knowledge the first observation of a subpicosecond terahertz (THz) pulse propagating as a superposition of the whispering-gallery modes (WGMs) of a dielectric cylinder. The WGM THz pulses are coupled into and out of a 5-mm-diameter silicon cylinder via a 100-μm -thick, single-mode silicon slab waveguide. We observed two round-trip cylindrical cavity pulses from this coupling structure, which cover a continuous frequency range from 0.4 to 1.8 THz. The coupled-mode equations are used to analyze this system and give reasonably good agreement with the experiment in both the frequency and the time domains.

© 2002 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(250.0250) Optoelectronics : Optoelectronics

Citation
Jiangquan Zhang and D. Grischkowsky, "Whispering-gallery mode terahertz pulses," Opt. Lett. 27, 661-663 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-8-661

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