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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 1219–1229

Photoinduced diffraction grating in hybrid artificial molecule

Zhi-Hong Xiao, Li Zheng, and HongZhen Lin  »View Author Affiliations


Optics Express, Vol. 20, Issue 2, pp. 1219-1229 (2012)
http://dx.doi.org/10.1364/OE.20.001219


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Abstract

Photoinduced diffraction grating is theoretically investigated in a three-level ladder-type hybrid artificial molecule comprised of a semiconductor quantum dot (SQD) and a metal nanoparticle (MNP). The SQD and the MNP are coupled via the Coulomb interaction. The probe absorption vanishes under the action of a strong coupling field, indicating an effect of electromagnetically induced transparency (EIT). Based on this EIT effect, diffraction grating is achievable when a standing-wave coupling field is applied. It turns out that the efficiency of diffraction grating is greatly improved due to the existence of the MNP. Furthermore, the diffraction efficiency can be controlled by tuning the interaction strength between the SQD and the MNP. Nearly pure phase grating is obtained, showing high transmissivity and high diffraction efficiency up to 33%.

© 2012 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(270.1670) Quantum optics : Coherent optical effects
(160.1245) Materials : Artificially engineered materials
(160.4236) Materials : Nanomaterials

ToC Category:
Diffraction and Gratings

History
Original Manuscript: October 3, 2011
Revised Manuscript: November 21, 2011
Manuscript Accepted: November 30, 2011
Published: January 5, 2012

Citation
Zhi-Hong Xiao, Li Zheng, and HongZhen Lin, "Photoinduced diffraction grating in hybrid artificial molecule," Opt. Express 20, 1219-1229 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-2-1219


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