منابع مشابه
Large quantum dots with small oscillator strength
S. Stobbe,1,* T. W. Schlereth,2,3 S. Höfling,2,3 A. Forchel,2,3 J. M. Hvam,1 and P. Lodahl1,† 1DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads 343, DK-2800 Kgs. Lyngby, Denmark 2Technische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany 3Wilhelm Conrad Röntgen-Center for Complex Material Systems (RCCM), Am Hubland, D-97074 Wür...
متن کاملGeneralized oscillator strength for Na 3s − 3p transition
Zhifan Chen and Alfred Z. Msezane Center for Theoretical Studies of Physical Systems, and Department of Physics Clark Atlanta University, Atlanta, Georgia 30314, U. S. A. ABSTRACT Generalized oscillator strengths (GOS’s) for the Na 3s−3p transition have been investigated using the spin-polarized technique of the random phase approximation with exchange (RPAE) and the first Born approximation (F...
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We have remeasured the lifetimes of the 3s24s and levels in Si II using beam foil spectro3s25s 2S1@2 scopic techniques. Measured values for the lifetimes and oscillator strengths derived from them are presented and compared with previous measurements and theoretical calculations. Agreement with recent theoretical calculations is now quite good : for 3s24s it is excellent and for 3s25s it is sat...
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In this paper a resonant tunnelling quantum well infrared photodetector (RT-QWIP) is discussed. Each period of this photodetector structure comprises of a resonant tunnelling structure (AlAs/AlGaAs/AlAs) nearby a quantum well (AlGaAs/GaAs). In this photodetector, photocurrent is produced when an electron makes a transition from the ground state of the well to an excited state which is coupled t...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2009
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.80.205313