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Optics Letters


  • Vol. 36, Iss. 16 — Aug. 15, 2011
  • pp: 3136–3138

Influence of anisotropic dipole matrix element on optical response of AB-stacked graphene superlattice

Chih-Wei Chiu, Yuan-Cheng Huang, Feng-Lin Shyu, and Ming-Fa Lin  »View Author Affiliations

Optics Letters, Vol. 36, Issue 16, pp. 3136-3138 (2011)

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When the polarization direction of the laser beam E ^ lies on the graphene plane, the absorption spectrum A ( ω ) is isotropic and includes one sharp peak and some shoulders. As for E ^ along the stacking direction, A ( ω ) is much weaker, and shows only one broadened peak. Because of the dipole matrix element M c v , the optical excitations do not fully reflect the features of electronic structures [or the joint density of states (JDOS)]. M c v plays an important role in the relationship between A ( ω ) and JDOS. It is strongly dependent on E ^ , showing an anisotropic property.

© 2011 Optical Society of America

OCIS Codes
(200.4860) Optics in computing : Optical vector-matrix systems
(260.5430) Physical optics : Polarization

ToC Category:
Optics in Computing

Original Manuscript: May 11, 2011
Revised Manuscript: July 5, 2011
Manuscript Accepted: July 7, 2011
Published: August 10, 2011

Chih-Wei Chiu, Yuan-Cheng Huang, Feng-Lin Shyu, and Ming-Fa Lin, "Influence of anisotropic dipole matrix element on optical response of AB-stacked graphene superlattice," Opt. Lett. 36, 3136-3138 (2011)

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