搜索结果: 1-15 共查到“光学工程 absorption”相关记录39条 . 查询时间(0.031 秒)
Characterization of Automotive Paint Clear Coats by Ultraviolet Absorption Microspectrophotometry with Subsequent Chemometric Analysis
forensics automative paint clear coats microspectrophotometry
2015/1/7
Clear coats have been a staple in automobile paints for almost thirty years and are of forensic interest when comparing transferred and native paints. However, the ultraviolet (UV) absorbers in these ...
Nearly Total Solar Absorption in Ultrathin Nanostructured Iron Oxide for Efficient Photoelectrochemical Water Splitting
photon management antirefl ection light trapping nanocone hematite photoelectrochemical cells
2015/8/6
We demonstrate using first-principles full-field electromagnetic simulations that nearly total above-band-gap solar absorption can be achieved in ultra-thin-film iron oxide photoanod...
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...
We consider a mirror-symmetric resonator with two ports. We show that, when excited from a single port, complete absorption can be achieved through critical coupling to degenerate resonances with oppo...
Method to Monitor Atmospheric Atomic Mercury by a Differential Absorption Lidar System
Monitor Atmospheric Atomic Mercury Differential Absorption Lidar System
2016/12/2
A differential absorption lidar (DIAL) system has been developed for atomic mercury concentration monitoring and applied in ambient air monitoring in Guangzhou, China. A 24-hour measurement on backgro...
Differential absorption lidar system employed for background atomic mercury vertical profi ling in South China
Differential absorption lidar DIAL Atomic mercury Oxygen Pollutant
2016/12/2
A differential absorption lidar (DIAL) system based on a Nd:YAG laser pumped narrow-band dye laser is developed and employed to monitor the atmospheric background concentration of atomic mercury in Gu...
Effect of the Doping Layer Concentration on Optical Absorption in Si δ-Doped GaAs Layer
Doped GaAs Self-Consistently The Intersubband Absorption
2013/1/30
We study in this paper the intersubband optical absorption of Si doped GaAs layer for different applied electric fields and donors concentration. The electronic structure has been calculated by solvin...
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...
Intensity Dependent Nonlinear Absorption in Direct and Indirect Band Gap Crystals under Nano and Picosecond Z-Scan
Direct and Indirect Band Gap Crystals Two Photon Absorption Three Photon Absorption Saturated Absorption
2013/1/30
The nonlinear absorption properties of direct (GaN) and indirect (CdI2) band gap crystals have been studied by using an open aperture Z-scan technique under fundamental (1064 nm) and frequency doubled...
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...
Angular constraint on light-trapping absorption enhancement in solar cells
Angular constraint light-trapping absorption enhancement solar cells
2015/8/10
Light trapping for solar cells can reduce production cost and improve energy conversion efficiency.Understanding some of the basic theoretical constraints on light trapping is therefore of funda...
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...
2.1-Tb/s·km OFDM Long-Reach PON Transmission using a Cost-Effective Electro-Absorption Modulator
2.1-Tb/s·km OFDM Long-Reach PON Transmission Cost-Effective Electro Absorption Modulator
2015/5/20
We experimentally demonstrate a superior performance of 2.1-Tb/s·km OFDM-signal transmission over 100-km long-reach PONs, which is achieved by using an EAM and direct-detection, and adopting the 128-Q...
Absorption characteristics of Disperse Blue 1/dioxane solutions
self-focusing and defocusing polymers and organics limiters polymers organic compounds
2011/5/5
We have studied the absorption performance of the organic dye Disperse Blue 1 (DB1) in dioxane
at different concentrations. Solutions were exposed to high intensities of CW laser radiation with
the ...