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Photonic crystal

About: Photonic crystal is a research topic. Over the lifetime, 43424 publications have been published within this topic receiving 887083 citations.


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TL;DR: In this paper, a model for both two-and three-dimensional photonic crystals that relates the extinction length to the magnitude of the variations is presented, and the predicted lengths agree well with our experiments on high-quality opals and inverse opals, and with literature data analyzed by us.
Abstract: Unavoidable variations in size and position of the building blocks of photonic crystals cause light scattering and extinction of coherent beams. We present a model for both two- and three-dimensional photonic crystals that relates the extinction length to the magnitude of the variations. The predicted lengths agree well with our experiments on high-quality opals and inverse opals, and with literature data analyzed by us. As a result, control over photons is limited to distances up to 50 lattice parameters 15 m in state-of-the-art structures, thereby impeding applications that require large photonic crystals, such as proposed optical integrated circuits. Conversely, scattering in photonic crystals may lead to different physics such as Anderson localization and nonclassical diffusion.

168 citations

Journal ArticleDOI
TL;DR: This work demonstrates full flexibility of individual closing of holes and subsequent filling of photonic crystal fibers with highly nonlinear liquids using two-photon direct-laser writing for solitonic supercontinuum generation over 600 nm bandwidth using a compact femtosecond oscillator as pump source.
Abstract: Selective filling of photonic crystal fibers with different media enables a plethora of possibilities in linear and nonlinear optics. Using two-photon direct-laser writing we demonstrate full flexibility of individual closing of holes and subsequent filling of photonic crystal fibers with highly nonlinear liquids. We experimentally demonstrate solitonic supercontinuum generation over 600 nm bandwidth using a compact femtosecond oscillator as pump source. Encapsulating our fibers at the ends we realize a compact ultrafast nonlinear optofluidic device. Our work is fundamentally important to the field of nonlinear optics as it provides a new platform for investigations of spatio-temporal nonlinear effects and underpins new applications in sensing and communications. Selective filling of different linear and nonlinear liquids, metals, gases, gain media, and liquid crystals into photonic crystal fibers will be the basis of new reconfigurable and versatile optical fiber devices with unprecedented performance. Control over both temporal and spatial dispersion as well as linear and nonlinear coupling will lead to the generation of spatial-temporal solitons, so-called optical bullets.

168 citations

Journal ArticleDOI
TL;DR: In this paper, the electrical control of structure and lasing in the photonic bandgaps of cholesteric liquid crystals (CLCs) was described, where photoexcitation of dye-doped CLC cells with a linearly polarized laser gave rise to laser emission at the edge(s) of the chiral photonic gap.
Abstract: This letter describes the electrical control of structure and lasing in the photonic bandgaps of cholesteric liquid crystals (CLCs). Photoexcitation of dye-doped CLC cells with a linearly polarized laser gives rise to laser emission at the edge(s) of the chiral photonic band gap. Applying voltages to the optically pumped CLC cells enables reversible switching of the laser action as a result of the structural changes in the chiral photonic band gap.

168 citations

Journal ArticleDOI
TL;DR: In this article, a magnetic field sensor combining photonic crystal fiber and optofluidics was presented. But they used a single platform by infiltrating a small amount of Fe3O4 magnetic optorluid/nanofluide in cladding holes of polarization-maintaining photonic fiber.
Abstract: We report a magnetic field sensor having advantages of both photonic crystal fiber and optofluidics, combining them on a single platform by infiltrating small amount of Fe3O4 magnetic optofluid/nanofluid in cladding holes of polarization-maintaining photonic crystal fiber We demonstrated that magnetic field of few mT can be easily and very well detected with higher sensitivity of 242 pm/mT The change in the birefringence values has been correlated to the response of nanofluid to applied field

168 citations

Journal ArticleDOI
TL;DR: In this paper, the relationship between the porosity of the material and its optical, electrical, interfacial and mechanical properties was investigated. And the authors found that porosity has profound effects on the adhesion and stability of thin metal or dielectric films deposited on porous materials.

168 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023748
20221,590
20211,207
20201,455
20191,643
20181,683