Download PDF by Karl Leo: High-Field Transport in Semiconductor Superlattices

By Karl Leo

ISBN-10: 3540005692

ISBN-13: 9783540005698

ISBN-10: 3540364714

ISBN-13: 9783540364719

The function of this publication is to check the present country of this quick constructing box. Up previously, there was no concise evaluation to be had of the really assorted features of this box. This ebook provides a simple advent to the thoughts at the back of Bloch oscillations. It describes how the physics of excessive box shipping has been investigated via a huge diversity of experimental innovations reminiscent of interband and intraband optical spectroscopy and shipping experiments. attainable purposes and additional tendencies also are mentioned.

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In a pump– probe experiment, the transmitted signal oscillates as a function of the delay time. However, since there are usually incoherent contributions to the pump– probe signal, the coherent response might be only a small part of the observed signal intensity. Similarly, interference can be observed in time-integrated four-wavemixing by detecting the diffracted signal as a function of T12 . e. 3 Optical Techniques to Detect Bloch Oscillations 39 t for a fixed time delay T12 . The spectrally resolved four-wave-mixing signal for each time delay T12 shows distinct resonances which relate to the photoexcited transitions.

L. E. E. V. Shank, Phys. Rev. Lett. 61, 1647 (1988). 33 11. A. F. Heinrich, M. T. Vu, L. Banyai, and H. Haug, Phys. Rev. Lett. 83, 3313 (1999). 33 12. S. Chemla, in Semiconductors and Semimetals, Vol. 58, eds. R. K. Willardson (Academic Press, San Diego 1998), p. 175. 33, 34 13. M. B. Miller, G. E. E. Y. Yan, Phys. Rev. B 42, 1841 (1990). 34, 49 14. K. Leo, M. Wegener, J. S. O. C. Damen, S. Schmitt-Rink, and W. Sch¨ afer, Phys. Rev. Lett. 65, 1340 (1990). 34, 46 15. M. S. Chemla, S. Schmitt-Rink, and W.

It was shown that this negative-delay-time signal decays twice as fast as the positive-delay signal, in agreement with theory [14]. 10), plotted vs. the electric field. The agreement of the oscillation period with theory is good. e. 5 THz. It should be noted here that this large tuning range is very remarkable for a quantum oscillator. The tuning range of a Bloch oscillator is, to the author’s knowledge, by far the largest tuning range of an elementary oscillator observed in any system. Fig. 11.

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High-Field Transport in Semiconductor Superlattices by Karl Leo


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