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Polarization effects of coherent control photocurrent in semiconductors

Liu Lu-Ning Shou Qian Lei Liang Lin Chun-Mei Lai Tian-Shu Wen Jin-Hui Lin Wei-Zhu

Polarization effects of coherent control photocurrent in semiconductors

Liu Lu-Ning, Shou Qian, Lei Liang, Lin Chun-Mei, Lai Tian-Shu, Wen Jin-Hui, Lin Wei-Zhu
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Publishing process
  • Received Date:  01 April 2004
  • Accepted Date:  15 July 2004
  • Published Online:  19 April 2005

Polarization effects of coherent control photocurrent in semiconductors

  • 1. 中山大学理工学院光电材料与技术国家重点实验室,广州 510275

Abstract: Quantum interference control photocurrent in bulk semiconductors is analyzed using the Fermi golden rule and Kane six-band model. The initial momentum distributions of photoexcited carriers in different polarized light fields are calculat ed. The polarization dependence of the coherent currents is shown explicitly in a microscopic level. For the case of parallel linear polarizations, the current direction is along the direction of the light polarization; while for the case of perpendicular polarizations the current direction is along the polarization o f the harmonic frequency light. It is also shown that when the one-photon trans ition and the two-photon transition is balanced, the maximum current injection efficiency is achieved.

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