Spontaneous emission control in high-extraction efficiency plasmonic crystals

Details Spontaneous emission control in high-extraction efficiency plasmonic crystals Spontaneous emission control in high-extraction efficiency plasmonic crystals

2007-11-30

arxiv.org/abs/0711.4879v1

Physics

Optics

Spontaneous emission control in high-extraction efficiency plasmonic crystals

Scientific paper

10.1364/OE.16.000426

We experimentally and theoretically investigate exciton-field coupling for the surface plasmon polariton (SPP) in waveguide-confined (WC) anti-symmetric modes of hexagonal plasmonic crystals in InP-TiO-Au-TiO-Si heterostructures. The radiative decay time of the InP-based transverse magnetic (TM)-strained multi-quantum well (MQW) coupled to the SPP modes is observed to be 2.9-3.7 times shorter than that of a bare MQW wafer. Theoretically we find that 80 % of the enhanced PL is emitted into SPP modes, and 17 % of the enhanced luminescence is redirected into WC-anti-symmetric modes. In addition to the direct coupling of the excitons to the plasmonic modes, this demonstration is also useful for the development of high-temperature SPP lasers, the development of highly integrated photo-electrical devices, or miniaturized biosensors.

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