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http://dx.doi.org/10.3807/JOSK.2008.12.1.057

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)
Publication Information
Journal of the Optical Society of Korea / v.12, no.1, 2008 , pp. 57-61 More about this Journal
Abstract
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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