DOI QR코드

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Superfluorescence from Magnetically Formed Quantum Dots: the Excitation Pulse-Width Dependence

  • Jho, Young-Dahl (Department of Information and Communications, Gwangju Institute of Science and Technology(GIST)) ;
  • Lee, Jin-Ho (Department of Physics, University of Florida) ;
  • Sanders, Gary D. (Department of Physics, University of Florida) ;
  • Stanton, Christopher J. (Department of Physics, University of Florida) ;
  • Reitze, David H. (Department of Physics, University of Florida) ;
  • Kono, Junichiro (Department of Electrical and Computer Engineering, Rice University) ;
  • Belyanin, Alexey A. (Department of Physics, Texas A&M University)
  • 투고 : 2008.02.29
  • 발행 : 2008.03.25

초록

We investigated the laser pulse-width dependence of dense plasmas confined within the magnetic length of $In_{0.2}Ga_{0.8}As$/GaAs multiple quantum wells under high magnetic fields up to 31 T. To fully fill the Landau levels of effectively zero-dimensional system, we used intense femtosecond (fs) laser pulses to create carrier densities near $10^{13}/cm^2$. The observed photoluminescence showed a characteristic of superfluorescence, above critical magnetic field when being excited by pulses shorter than coherence buildup time.

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참고문헌

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