Evidence of nonperturbative exciton-exciton scattering in four-wave-mixing signals in quantum well microcavities

Nai-Hang Kwong, R. Takayama, Rudolf Binder, I. Rumyantsev, M. Kuwata-Gonokami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Summary form only given. The role of exciton-exciton scattering in the nonlinear optical response of semiconductor quantum wells is well established. However, an interesting question arising from the system's dimensionality has so far not been addressed. In the quantum theory of scattering in two dimensions, the scattering amplitude behaves non-smoothly and non-perturbatively at low energies. While the exact scattering amplitude vanishes as 1/ln (energy) as energy ↘0, the second Born approximation diverges logarithmically. These properties result from the system's dimensionality and hold for any short-range well-behaved potential. One may ask whether the second Born approximation also fails for exciton-exciton scattering in two-dimensional structures and how this breakdown may be experimentally detected. In this contribution, we address this question within a microscopic theory of frequency-degenerate four-wave-mixing signals from a quantum-well microcavity. Analyzing an experiment reported in with this theory, we argue that the data are already sufficiently sensitive to show the breakdown of the second Born approximation for exciton-exciton scattering.

Original languageEnglish (US)
Title of host publicationTechnical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages231-232
Number of pages2
ISBN (Print)155752663X, 9781557526632
DOIs
StatePublished - 2001
EventQuantum Electronics and Laser Science Conference, QELS 2001 - Baltimore, United States
Duration: May 6 2001May 11 2001

Other

OtherQuantum Electronics and Laser Science Conference, QELS 2001
CountryUnited States
CityBaltimore
Period5/6/015/11/01

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation

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    Kwong, N-H., Takayama, R., Binder, R., Rumyantsev, I., & Kuwata-Gonokami, M. (2001). Evidence of nonperturbative exciton-exciton scattering in four-wave-mixing signals in quantum well microcavities. In Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001 (pp. 231-232). [962145] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/QELS.2001.962145