By superposing two electric fields of light excited by s- and p-polarized light, respectively, it is possible to break the
symmetry of the field intensity distribution in plasmonic crystals, which results in a DC voltage normal to the plane of
incidence. Experimental results on 40 nm–thick Au film with square array of holes with diameter of 240 nm and period
of 500 nm are compared with a numerical calculation based on the fast multipole boundary integral equation method.
Dispersive behavior of transverse voltage around the surface plasmon resonance for circularly polarized light is
elucidated in terms of the phase shift at the resonance.
Effective magnetic permeability is investigated theoretically as well as experimentally for stratified metal dielectric
metamaterial consisting of alumina (60nm) /Ag (30nm) /alumina (60nm) unit cells. The permeability calculated from
complex transmission and reflection coefficients with the transfer matrix amounts to 20 just below the first photonic
bandgap. Measurements with a Mach-Zehnder interferometer were found to be consistent with theoretical prediction.
Transmission spectra and photoinduced transmission change are observed in periodic waveguide which consist of a quartz grating substrate and a thin protein film of bacteriorhodopsin. We propose a scheme to achieve all optical switching using the photoinduced refractive index change of bacteriorhodopsin.
Linear as well as nonlinear optical responses of periodic array of semiconductor in a waveguide structure are reviewed. The period is chosen in the scale of optical wavelength. Such structures can be demonstrated by imbedding an inorganic-organic perovskite compound into quartz grating grooves. By virtue of its large excitonic oscillator strength, strong coupling regime is realized even at room temperature. Polraritonic effect, directional photoluminescence and ultrafast optical switching operation are discussed.
A large class of new layered semiconductors -- perovskite lead iodide compounds -- is of great interest because of possible optoelectronic applications due to pronounced excitonic effects. It has been predicted earlier that excitons in these structures should be enhanced due to the so called `dielectric confinement' arising from large differences of dielectric constants of adjoining layers. In the present work we calculate the energies, the wave functions, and the diamagnetic coefficient of excitons in these naturally grown superlattices with allowance for the image potential and the superlattice structure of the compounds. The fitting of our theory to the experiments makes it possible to evaluate the reduced mass of excitons in these compounds.
Conference Committee Involvement (7)
Plasmonics: Nanoimaging, Nanofabrication, and their Applications V
2 August 2009 | San Diego, California, United States
Plasmonics: Nanoimaging, Nanofabrication, and Their Applications IV
10 August 2008 | San Diego, California, United States
Plasmonics: Nanoimaging, Nanofabrication, and Their Applications III
28 August 2007 | San Diego, California, United States
Plasmonics: Metallic Nanostructures and Their Optical Properties V
26 August 2007 | San Diego, California, United States
Plasmonics: Nanoimaging, Nanofabrication, and their Applications II
16 August 2006 | San Diego, California, United States
Plasmonics: Metallic Nanostructures and their Optical Properties IV
13 August 2006 | San Diego, California, United States
Plasmonic Nano-imaging and Nanofabrication
3 August 2005 | San Diego, California, United States
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