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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 15 — Aug. 1, 2013
  • pp: 2754–2756

Polarizing effect of aligned nanoparticles in terahertz frequency region

Debanjan Polley, Arnab Ganguly, Anjan Barman, and Rajib Kumar Mitra  »View Author Affiliations


Optics Letters, Vol. 38, Issue 15, pp. 2754-2756 (2013)
http://dx.doi.org/10.1364/OL.38.002754


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Abstract

We report the polarizing behavior of aligned Ni nanoparticles (NPs) having average diameter of 165±15nm in 210μm thick polyvinyl alcohol (PVA) matrix in the frequency range of 0.2–1.6 THz. The NPs have been prepared via a wet chemical route and then aligned in PVA film by using an external magnetic field. When the polarization of THz electric field is parallel to the NPs alignment direction, a strong THz absorption is observed whereas a minimum THz absorption is noticed for the corresponding perpendicular configuration. Degree of polarization is calculated to be 0.9±0.08. Considering the good polarizing performance, ease of preparation, durability, and low maintenance, this aligned NP system is a perfect candidate to emerge as a potential THz polarizer.

© 2013 Optical Society of America

OCIS Codes
(300.6530) Spectroscopy : Spectroscopy, ultrafast
(320.7150) Ultrafast optics : Ultrafast spectroscopy
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: April 10, 2013
Revised Manuscript: June 10, 2013
Manuscript Accepted: June 10, 2013
Published: July 29, 2013

Citation
Debanjan Polley, Arnab Ganguly, Anjan Barman, and Rajib Kumar Mitra, "Polarizing effect of aligned nanoparticles in terahertz frequency region," Opt. Lett. 38, 2754-2756 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-15-2754


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