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Efficient optical pumping of organic-inorganic heterostructures for nonlinear optics

机译：非线性光学的有机-无机异质结构的高效光泵浦

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摘要

We theoretically consider a hybrid heterostructure made of an inorganic quantum well in close proximity with an organic material overlayer whereby the latter is used to funnel excitation energy to the former in order to exploit the optical nonlinearities of the two-dimensional Wannier excitons. On the one hand, the diffusion length of Frenkel excitons in the organic medium is assumed to be comparable or larger than the corresponding absorption length. On the other hand, the nonradiative energy transfer from the organic to the inorganic subsytem can be very Efficient when the Frenkel exciton energy is significantly higher than the band gap of the inorganic semiconductor. We show in this regime that the resonant optical pumping of the Frenkel excitons can lead to an Efficient indirect pumping of the Wannier excitons (or electron-hole plasma) in the inorganic quantum well turning on the corresponding nonlinearities.
机译：我们从理论上考虑了由杂散结构构成的杂化结构，该杂化结构由无机量子阱与有机材料覆盖层紧密相邻，从而后者被用来将激发能集中到前者，以利用二维Wannier激子的光学非线性。一方面，假定弗伦克尔激子在有机介质中的扩散长度与相应的吸收长度相当或更大。另一方面，当弗伦克尔激子能量显着高于无机半导体的带隙时，从有机系统到无机系统的非辐射能量转移会非常有效。我们在这种情况下表明，Frenkel激子的共振光学泵浦可以导致无机量子阱中相应的非线性效应对Wannier激子（或电子空穴等离子体）的有效间接泵浦。

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  • 来源
    《Physical review》 |2012年第16期|165204.1-165204.7|共7页
  • 作者

    V. M. Agranovich; D. M. Basko; G. C. La Rocca;

  • 作者单位

    NanoTech Institute, Chemistry Department, The University of Texas at Dallas, Richardson, Texas 75083, USA,Institute of Spectroscopy, Russian Academy of Science, Troitsk, Moscow Region 142190, Russia;

    Universite Grenoble 1/CNRS, LPMMC UMR 5493, 25 Rue des Martyrs, F-38042 Grenoble, France;

    Scuola Normale Superiore and CN1SM, Piazza dei Cavalieri, 1-56126 Pisa, Italy;

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  • 正文语种 eng
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  • 关键词

    polymers; organic compounds; theory, models, and numerical simulation;

    机译：聚合物有机化合物;理论;模型和数值模拟;

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