Results 61 to 70 of about 90,482 (273)
Optical Waveguide Enhanced Photovoltaics
Optics Express, 2008 Enhanced light to electric power conversion efficiency of photovoltaic cells with a low absorbance was achieved using waveguide integration. We present a proof of concept using a very thin dye-sensitized solar cell which absorbed only a small fraction of the light at normal incidence.
Sven, Rühle +3 more
openaire +2 more sources
Probing the loss origins of ultra-smooth $\mathrm{Si_3N_4}$ integrated photonic waveguides
, 2018 On-chip optical waveguides with low propagation losses and precisely engineered group velocity dispersion (GVD) are important to nonlinear photonic devices such as soliton microcombs. Yet, despite intensive research efforts, nonlinear integrated photonic
Ghadiani, Bahareh +5 more
core +1 more source
Low-cost, precision, self-alignment technique for coupling laser and photodiode arrays to polymer waveguide arrays on multilayer PCBs [PDF]
, 2008 The first, to our knowledge, passive, precision, self-alignment technique for direct coupling of vertical cavity surface emitting laser (VCSEL) and photodiode (PD) arrays to an array of polymer buried channel waveguides on a rigid printed circuit board ...
Milward, D +3 more
core +1 more source
Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?
Advanced Functional Materials, EarlyView.This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee +7 more
wiley +1 more source
Stationary and coherent spectroscopy of 167Er3+ in waveguides in 7LiYF4 crystal
EPJ Web of Conferences, 2017 We have conducted a spectroscopic investigation of 167Er3+ ions in optical waveguides on an optical transition between the hyperfine sublevels of 4I15/2 and 4I9/2 multiplets.
Minnegaliev Mansur +7 more
doaj +1 more source
Type I phase matching in thin film of lithium niobate on insulator
Results in Physics, 2020 Thin film of lithium niobate on insulator (LNOI) enables functional devices with compact sectional area and footprint, exhibiting high nonlinear optical conversion efficiencies and high performance electro-optical modulating.
Lei Wang +3 more
doaj +1 more source
Fabrication of Polymeric Multimode Waveguides and Devices in SU-8 Photoresist Using Selective Polymerization. [PDF]
, 2002 Large cross section multimode waveguides have been realized in SU-8 using selective polymerization. SU-8 is a negative photoresist, which has shown good optical properties and it is mechanically and chemically stable.
Borreman, A. +4 more
core +1 more source
Nonlinear self-flipping of polarization states in asymmetric waveguides
, 2012 Waveguides of subwavelength dimensions with asymmetric geometries, such as rib waveguides, can display nonlinear polarization effects in which the nonlinear phase difference dominates the linear contribution, provided the birefringence is sufficiently ...
Afshar, V. Shahraam +3 more
core +1 more source
Advanced Functional Materials, EarlyView.A regenerated cellulose/MXene aerogel film is engineered with a surface‐confined, coral‐like polyaniline skin to intensify interfacial polarization while a porous, percolated conductive core is retained. By molten salt hydrate processing and interfacially confined oxidative polymerization, PANI growth is localized at the outer surface and internal ...
Kun Liu +4 more
wiley +1 more source
Generation of phonons from electrostriction in small-core optical waveguides
AIP Advances, 2013 We investigate the generation of acoustic phonons from electrostriction of optical waves in small core waveguides. We specifically consider simple step-index strip waveguides composed of silica or silicon in air, with sub-micron lateral dimensions.
Vincent Laude, Jean-Charles Beugnot
doaj +1 more source