搜索结果: 1-10 共查到“光学仪器及技术 absorption”相关记录10条 . 查询时间(0.046 秒)
Total Absorption in a Graphene Monolayer in the Optical Regime by Critical Coupling with a Photonic Crystal Guided Resonance
graphene photonic crystal near-infrared critical coupling guided resonance absorption enhancement
2015/8/6
We numerically demonstrate total absorption in graphene in the near-infrared and visible wavelength ranges by means of critical coupling with guided resonances of a photonic crystal slab. In this wave...
Absorption Enhancement in Ultrathin Crystalline Silicon Solar Cells with Antireflection and Light-Trapping Nanocone Gratings
Solar cells light trapping antireflection crystalline silicon absorption enhancement nanocone gratings
2015/8/7
Enhancing the light absorption in ultrathin-film silicon solar cells is important for improving efficiency and reducing cost. We introduce a double-sided grating design, where the front and back surfa...
Optical Absorption Enhancement in Freestanding GaAs Thin Film Nanopyramid Arrays
Optical Absorption GaAs Thin Film Nanopyramid Arrays
2015/8/7
Although III–V compound semiconductor multi-junction cells show the highest effi ciency among all types of solar cells, their cost is quite high due to expensive substrates, long epitaxial growt...
Use of Atomic Absorption Spectrometry in Assessment of Biomonitor Plants for Lead, Cadmium and Copper Pollution
Atomic absorption Lead Cadmium Coper Biomonitor plants Pollution
2012/4/12
Eleven plant species were collected from the vicinity of lead-battery plant in the city of Gaziantep, Turkey. Lead, cadmium and copper concentrations in the soil and leaves of plants were determined b...
High Speed Energy-Efficient Germanium Electro- absorption Modulator Featuring Monolithic Integration with Germanium p-i-n Photodetector
Optical devices Modulators
2015/5/26
We report a novel evanescent-coupled germanium electro-absorption modulator with a small active area of 16 μm 2 OCIS codes: (230.0230) Optical devices; (230.4110) Modulators giving an extinction ratio...
Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings
optical absorption organic solar cells plasmonic modes metallic gratings
2015/8/10
We theoretically investigate the enhancement of optical absorption in thin-film organic solar cells in which the top transparent electrode is partially substituted by a periodic metallic grating...
Optical Absorption Enhancement in Amorphous Silicon Nanowire and Nanocone Arrays
Optical Absorption Enhancement Amorphous Silicon Nanowire Nanocone Arrays
2015/8/10
Hydrogenated amorphous Si (a-Si:H) is an important solar cell material. Here we demonstrate the fabrication of a-Si:H nanowires (NWs) and nanocones (NCs), using an easily scalable and IC-compatible pr...
Recent Trends in the Molecular Design Towards Large Two-Photon Absorption Cross-Sections
Nonlinear optics Two-photon absorption Third-order polarizability
2009/6/12
Studies on the molecular design directed towards large two-photon absorption cross-sections have been reviewed. Organic compounds that showed two-photon absorption cross-sections larger than 1000 GM a...
Approaching total absorption at near infrared in a large area monolayer graphene by critical coupling
Approaching total absorption near infrared monolayer graphene critical coupling
2015/8/6
We demonstrate experimentally close to total absorption in monolayer graphene based on critical coupling with guided resonances in transfer printed photonic crystal Fano resonance filters at nea...
Bi-directional, 480Mbps, Ultra-Wideband, Radio-over-Fibre Transmission Using a 1310/1564nm Reflective Electro-absorption Transducer and Commercially-Available Components
Ultra-Wideband Radio-over-Fibre Transmission Reflective Electro-absorption Transducer Commercially-Available Components
2015/7/31
We present the first experimental demonstration of a bi-directional, reflective, electro-absorption transducer-based, 480 Mbps UWB-wireless/optical transmission system. A -21.4dB error vector magnitud...