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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 9 — Apr. 25, 2011
  • pp: 8367–8378

Surface plasmon polariton induced optical amplitude and phase modulation in sub-wavelength apertures

Arash Joushaghani, Bo Hou, J. Stewart Aitchison, and Joyce K. S. Poon  »View Author Affiliations


Optics Express, Vol. 19, Issue 9, pp. 8367-8378 (2011)
http://dx.doi.org/10.1364/OE.19.008367


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Abstract

We report on the amplitude and phase modulation of picosecond optical pulses, near λ = 800 nm, transmitted through sub-wavelength rectangular apertures in thin gold films with thicknesses of λ/10 at per-pulse energies of <0.3 nJ or 9 pJ per aperture. Due to the excitation and strong confinement of surface plasmon polaritons in the apertures, the leading edge of a pulse causes a rapid heating of the electrons and lattice to modulate its falling edge. By comparing cross-correlation frequency resolved optical gating measurements with simulations, the thermal effects responsible for the induced pulse dynamics are identified.

© 2011 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(300.6430) Spectroscopy : Spectroscopy, photothermal

ToC Category:
Optics at Surfaces

History
Original Manuscript: February 7, 2011
Revised Manuscript: March 29, 2011
Manuscript Accepted: March 31, 2011
Published: April 15, 2011

Citation
Arash Joushaghani, Bo Hou, J. Stewart Aitchison, and Joyce K. S. Poon, "Surface plasmon polariton induced optical amplitude and phase modulation in sub-wavelength apertures," Opt. Express 19, 8367-8378 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-9-8367


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