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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 19 — Sep. 13, 2010
  • pp: 19761–19769

Ultrafast silicon-based active plasmonics at telecom wavelengths

Jan N. Caspers, Nir Rotenberg, and Henry M. van Driel  »View Author Affiliations

Optics Express, Vol. 18, Issue 19, pp. 19761-19769 (2010)

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Using a gold/silicon grating coupler and modulating the silicon dielectric constant with 775 nm, 800 fs pump pulses we demonstrate an ultrafast spectral shift to a surface plasmon polariton coupling resonance for 1300-1700 nm probe pulses. With a modest pump fluence of 2.2 mJcm−2 the pump-induced free carriers shift the resonance by more than its width, with recovery occurring in 103 ps due to surface recombination.

© 2010 OSA

OCIS Codes
(230.4110) Optical devices : Modulators
(240.6680) Optics at surfaces : Surface plasmons
(320.7080) Ultrafast optics : Ultrafast devices
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(250.5403) Optoelectronics : Plasmonics
(320.7085) Ultrafast optics : Ultrafast information processing

ToC Category:
Optics at Surfaces

Original Manuscript: July 22, 2010
Revised Manuscript: August 18, 2010
Manuscript Accepted: August 23, 2010
Published: September 1, 2010

Jan N. Caspers, Nir Rotenberg, and Henry M. van Driel, "Ultrafast silicon-based active plasmonics at telecom wavelengths," Opt. Express 18, 19761-19769 (2010)

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