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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 29, Iss. 3 — Mar. 1, 2012
  • pp: 274–279

Room-temperature strong terahertz photon mixing in graphene

Sultan Shareef, Yee Sin Ang, and Chao Zhang  »View Author Affiliations

JOSA B, Vol. 29, Issue 3, pp. 274-279 (2012)

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We demonstrate that single layer graphene exhibits a strong nonlinear photon-mixing effect in the terahertz frequency regime. Up to room temperature, the third-order nonlinear current in graphene grows rapidly with increasing temperature. The third-order nonlinear current can be as strong as the linear current under a moderate electric field strength of 10 4 V / cm . Because of the unique Dirac behavior of the graphene quasi-particles, low Fermi level and electron fillings optimizes the optical nonlinearity. Under a strong-field condition, the strong-field-induced Dirac fermion population redistribution and nonequilibrium carrier heating effects further amplify the optical nonlinearity of graphene. Our results suggest that doped graphene can potentially be utilized as a strong terahertz photon mixer in the room-temperature regime.

© 2012 Optical Society of America

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(160.3918) Materials : Metamaterials
(160.4236) Materials : Nanomaterials

ToC Category:
Nonlinear Optics

Original Manuscript: September 2, 2011
Revised Manuscript: November 8, 2011
Manuscript Accepted: November 11, 2011
Published: February 10, 2012

Sultan Shareef, Yee Sin Ang, and Chao Zhang, "Room-temperature strong terahertz photon mixing in graphene," J. Opt. Soc. Am. B 29, 274-279 (2012)

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