4.6 Article

Three-photon absorption spectra of zinc blende semiconductors: theory and experiment

Journal

OPTICS LETTERS
Volume 33, Issue 22, Pages 2626-2628

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.33.002626

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Funding

  1. Air Force Office of Scientific Research (AFOSR) [FA95500410200]
  2. National Science Foundation (NSF) [ECS 0524533]
  3. U.S. Army Research Laboratory [W911NF0420012]

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We calculate the spectrum of three-photon absorption (3PA) in zinc blende semiconductors using Kane's four-band model. We apply this to ZnSe and measure the 3PA spectrum using ferasecond pulses, obtaining excellent agreement. The spectrum shows the apparent onset of 3PA from the split-off band and also shows quantum interference between the several possible evolution pathways when exciting carriers from valence to conduction band. (C) 2008 Optical Society of America

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