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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 2 — Feb. 1, 1998
  • pp: 586–593

Cavity- and light-induced enhancement in the intersubband sum-frequency generation of a quantum well inside a microcavity

Ansheng Liu  »View Author Affiliations


JOSA B, Vol. 15, Issue 2, pp. 586-593 (1998)
http://dx.doi.org/10.1364/JOSAB.15.000586


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Abstract

We present a nonlocal local-field calculation of optical sum-frequency generation (SFG) in a quantum well (QW) associated with intersubband processes. The QW is positioned inside a microcavity and pumped by a strong light beam as one of the fundamental waves for the SFG. The third-order optical nonlinearity of the QW in connection with the strong field is included in the calculation of the sum-frequency (SF) conversion efficiency. From the microscopic Maxwell–Lorentz equation combined with light-induced linear and third-order nonlinear current densities, we solve the fundamental and SF local fields exactly. In turn we define the conversion efficiency of the SFG. For a GaAs/Al0.4Ga0.6As QW placed between vacuum and a GaAs/AlAs distributed Bragg reflector (DBR) followed by a GaAs prism, we calculate the SF energy reflection spectra for different values of the incident light intensity and the DBR period. The numerical results show that a significant enhancement of the SF conversion efficiency occurs when the DBR period and the input light intensity are optimally chosen. This is attributed to the cavity- and light-induced local-field enhancement in the QW system.

© 1998 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(270.0270) Quantum optics : Quantum optics

Citation
Ansheng Liu, "Cavity- and light-induced enhancement in the intersubband sum-frequency generation of a quantum well inside a microcavity," J. Opt. Soc. Am. B 15, 586-593 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-2-586

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