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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 12463–12472

Polarization shaping of few-cycle terahertz waves

Kanghee Lee, Minwoo Yi, Jin Dong Song, and Jaewook Ahn  »View Author Affiliations

Optics Express, Vol. 20, Issue 11, pp. 12463-12472 (2012)

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We present a polarization shaping technique for few-cycle terahertz (THz) waves. For this, N femtosecond laser pulses are generated from a devised diffractive optical system made of as-many glass wedges, whcih then simultaneously illuminate on various angular positions of a sub-wavelength circular pattern of an indium arsenide thin film, to produce a THz wave of tailor-made polarization state given as a superposition of N linearly-polarized THz pulses. By properly arranging the orientation and thickness of the glass wedges, which determine the polarization and its timing of the constituent THz pulses, we sucessfully generate THz waves of various unconventioal polarization states, such as polarization rotation and alternation between circular polarization states.

© 2012 OSA

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(320.5540) Ultrafast optics : Pulse shaping
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Ultrafast Optics

Original Manuscript: March 30, 2012
Revised Manuscript: May 14, 2012
Manuscript Accepted: May 14, 2012
Published: May 17, 2012

Kanghee Lee, Minwoo Yi, Jin Dong Song, and Jaewook Ahn, "Polarization shaping of few-cycle terahertz waves," Opt. Express 20, 12463-12472 (2012)

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