scholarly journals STRUCTURE AND OPTICAL PROPERTIES OF HYBRID METAL-DIELECTRIC COLLOIDAL PHOTONIC CRYSTALS

2017 ◽  
Vol 3 ◽  
pp. 37 ◽  
Author(s):  
A. V. Cvetkov ◽  
V. I. Gerbreders ◽  
S. D. Khanin ◽  
A. E. Lukin ◽  
A. S. Ogurcovs ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Magnetron Sputtering ◽  
Surface Plasmon ◽  
Optical Materials ◽  
Colloidal Crystals ◽  
Bragg Diffraction ◽  
Colloidal Photonic Crystals ◽  
Fabry Perot ◽  
Plasmon Polaritons

Metal-dielectric nanocomposite optical materials based on colloidal crystals have been prepared by electro-thermo-diffusion or magnetron sputtering of silver. Optical properties of these photonic crystals have been studied by angle-resolved reflectance and transmission spectroscopy. The interpretation of observed spectra has been made taking into account the Bragg diffraction, Fano resonance, Fabry-Perot resonance and surface plasmon-polaritons, which excitations contribute to the optical properties of plasmonic-photonic crystals.

scholarly journals Cathodoluminescence as a probe of the optical properties of resonant apertures in a metallic film

2018 ◽  
Vol 9 ◽  
pp. 1491-1500 ◽  
Author(s):  
Kalpana Singh ◽  
Evgeniy Panchenko ◽  
Babak Nasr ◽  
Amelia Liu ◽  
Lukas Wesemann ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Plasmon ◽  
Spatial Dependence ◽  
Gold Film ◽  
Electromagnetic Simulations ◽  
Resonant Modes ◽  
Fabry Perot ◽  
Plasmon Polaritons ◽  
Insight Into ◽  
Considerable Insight

Here we present the results of an investigation of resonances of azimuthal trimer arrangements of rectangular slots in a gold film on a glass substrate using cathodoluminescence (CL) as a probe. The variation in the CL signal collected from specific locations on the sample as a function of wavelength and the spatial dependence of emission into different wavelength bands provides considerable insight into the resonant modes, particularly sub-radiant modes, of these apertures. By comparing our experimental results with electromagnetic simulations we are able to identify a Fabry–Pérot mode of these cavities as well as resonances associated with the excitation of surface plasmon polaritons on the air–gold boundary. We obtain evidence for the excitation of dark (also known as sub-radiant) modes of apertures and aperture ensembles.

scholarly journals Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 114
Author(s):  
Steve Kamau ◽  
Safaa Hassan ◽  
Khadijah Alnasser ◽  
Hualiang Zhang ◽  
Jingbiao Cui ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Near Infrared ◽  
Broadband Absorption ◽  
Au Film ◽  
Fabry Perot ◽  
Absorbing Material ◽  
Multiple Band ◽  
Band Absorption ◽  
Plasmon Polaritons

It is challenging to realize the complete broadband absorption of near-infrared in thin optical devices. In this paper, we studied high light absorption in two devices: a stack of Au-pattern/insulator/Au-film and a stack of Au-pattern/weakly-absorbing-material/Au-film where the Au-pattern was structured in graded photonic super-crystal. We observed multiple-band absorption, including one near 1500 nm, in a stack of Au-pattern/spacer/Au-film. The multiple-band absorption is due to the gap surface plasmon polariton when the spacer thickness is less than 30 nm. Broadband absorption appears in the near-infrared when the insulator spacer is replaced by a weakly absorbing material. E-field intensity was simulated and confirmed the formation of gap surface plasmon polaritons and their coupling with Fabry–Pérot resonance.

Propagation of long-range surface plasmon polaritons in photonic crystals

2005 ◽  
Vol 22 (9) ◽  
pp. 2027 ◽  
Author(s):  
Alexandra Boltasseva ◽  
Thomas Søndergaard ◽  
Thomas Nikolajsen ◽  
Kristjan Leosson ◽  
Sergey I. Bozhevolnyi ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Long Range ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Plasmon Polaritons

Controlled gradient colloidal photonic crystals and their optical properties

2013 ◽  
Vol 428 ◽  
pp. 9-17 ◽  
Author(s):  
He Huang ◽  
Junbo Chen ◽  
Ye Yu ◽  
Zengmin Shi ◽  
Helmuth Möhwald ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Colloidal Photonic Crystals

scholarly journals Optical Materials: Gold Binary-Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties (Small 12/2014)

Small ◽  
2014 ◽  
Vol 10 (12) ◽  
pp. 2373-2373
Author(s):  
Guangqiang Liu ◽  
Xinhua Li ◽  
Wenbo Wang ◽  
Fei Zhou ◽  
Guotao Duan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Materials ◽  
Colloidal Crystals

From Opals to Optics: Colloidal Photonic Crystals

MRS Bulletin ◽  
2001 ◽  
Vol 26 (8) ◽  
pp. 637-641 ◽  
Author(s):  
Vicki L. Colvin
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Near Infrared ◽  
Photonic Bandgap ◽  
Length Scale ◽  
Ordered Arrays ◽  
Colloidal Photonic Crystals ◽  
Infrared Wavelengths

Over a decade ago, theorists predicted that photonic crystals active at visible and near-infrared wavelengths would possess a variety of exciting optical properties. Only in the last several years, however, have experimentalists begun to build materials that realize this potential in the laboratory. This lag between experiment and theory is primarily due to the to the challenges associated with fabricating these unique materials. As the term “crystal” suggests, these samples must consist of highly perfect ordered arrays of solids. However, unlike conventional crystals, which exhibit order on the angstrom length scale, photonic crystals must have order on the submicrometer length scale. In addition, many of the most valuable properties of photonic crystals are only realized when samples possess a “full” photonic bandgap. For such systems, large dielectric contrasts and particular crystal symmetries create a range of frequencies over which light cannot propagate. Realizing the nanoscopic architectures required to form such systems is a challenge for experimentalists. As a result, fabrication schemes that rely on lithographic techniques or spontaneous assembly have been a focus in the development of the field.

scholarly journals Optical Properties of Nanostructured Silver Embedded by Electro-Thermo-Diffusion in Opal Photonic Crystal

2015 ◽  
Vol 1 ◽  
pp. 230 ◽  
Author(s):  
V.L. Veisman ◽  
S.G. Romanov ◽  
V.G. Solovyev ◽  
M.V. Yanikov
Keyword(s):  
Optical Properties ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Fano Resonance ◽  
Electromagnetic Waves ◽  
Reflectance Spectroscopy ◽  
Nanocomposite Materials ◽  
Bragg Diffraction ◽  
Silver Dendrites ◽  
Opal Template

<p class="R-AbstractKeywords"><span lang="EN-US">Novel nanocomposite materials <em>Ag / opal</em> have been prepared by electro-thermo-diffusion of silver in opal template. Optical properties of these photonic crystals have been studied by angle-resolved reflectance spectroscopy. Interpretation of the observed optical spectra has been made on the basis of the Bragg diffraction and the Fano resonance</span><span lang="EN-US">between diffracted in <em>Ag / opal</em> composite photonic crystal electromagnetic waves and those resonantly scattered by silver dendrites.</span></p>

scholarly journals Coherent optical effects in two-dimensional nanostructures with semiconductor quantum dots

2019 ◽  
Vol 220 ◽  
pp. 02010 ◽  
Author(s):  
Alexei Prokhorov ◽  
Valentyn Volkov
Keyword(s):  
Quantum Dots ◽  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Optical Materials ◽  
Quantum Coherence ◽  
Semiconductor Quantum Dots ◽  
Two Dimensional ◽  
Optical Effects ◽  
Coherent Optical Effects ◽  
Plasmon Polaritons

The effects of quantum coherence arising in an ensemble of semiconductor quantum dots located near the surface of two-dimensional optical materials are considered. The conditions for the realization of strong coupling between surface plasmon-polaritons and quantum dot in proximity to graphene are studied.

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