Department of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada.
Nanotechnology. 2012 Feb 17;23(6):065701. doi: 10.1088/0957-4484/23/6/065701. Epub 2012 Jan 17.
We study the variation of the energy absorption rate in a hybrid semiconductor quantum dot-metallic nanoparticle system doped in a photonic crystal. The quantum dot is taken as a three-level V-configuration system and is driven by two applied fields (probe and control). We consider that one of the excitonic resonance frequencies is near to the plasmonic resonance frequency of the metallic nanoparticle, and is driven by the probe field. The other excitonic resonance frequency is far from both the plasmonic resonance frequency and the photonic bandgap edge, and is driven by the control field. In the absence of the photonic crystal we found that the system supports three excitonic-induced transparencies in the energy absorption spectrum of the metallic nanoparticle. We show that the photonic crystal allows us to manipulate the frequencies of such excitonic-induced transparencies and the amplitude of the energy absorption rate.
我们研究了掺杂在光子晶体中的混合半导体量子点-金属纳米颗粒系统中能量吸收率的变化。该量子点采用三能级 V 型结构，并由两个外加场（探测场和控制场）驱动。我们假设其中一个激子共振频率接近金属纳米颗粒的等离子体共振频率，并由探测场驱动。另一个激子共振频率既远离等离子体共振频率又远离光子带隙边缘，由控制场驱动。在没有光子晶体的情况下，我们发现系统在金属纳米颗粒的能量吸收光谱中支持三种激子诱导透明。我们表明，光子晶体使我们能够操纵这些激子诱导透明的频率和能量吸收率的幅度。
