Resonant harmonic generation and dynamic screening in a double quantum well

J. N. Heyman, K. Craig, B. Galdrikian, M. S. Sherwin, K. Campman, P. F. Hopkins, S. Fafard, and A. C. Gossard
Phys. Rev. Lett. 72, 2183 – Published 4 April 1994
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Abstract

Second- and third-harmonic generation are observed in a semiconductor heterostructure which approximates a two-state system with an 11-meV level spacing. A resonance in the second- (third-) harmonic generation is found when the depolarization-shifted infrared absorption peak is Stark tuned through 2 (3) times the pump frequency. These resonances are thus associated with the depolarization-shifted, and not the bare, intersubband energy. Data are analyzed with a theory of second-harmonic generation including dynamic screening. Saturation is observed at pump intensities >10 kW/cm2.

  • Received 10 December 1993

DOI:https://doi.org/10.1103/PhysRevLett.72.2183

©1994 American Physical Society

Authors & Affiliations

J. N. Heyman, K. Craig, B. Galdrikian, M. S. Sherwin, K. Campman, P. F. Hopkins, S. Fafard, and A. C. Gossard

  • Quantum Institute, University of California at Santa Barbara, Santa Barbara, California 93106
  • Materials Department, University of California at Santa Barbara, Santa Barbara, California 93106

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Vol. 72, Iss. 14 — 4 April 1994

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