搜索结果: 1-15 共查到“光学工程 emission”相关记录24条 . 查询时间(0.031 秒)
The way electrons interact with photons of light is a key part of many modern technologies, from lasers to solar panels to LEDs. But the interaction is inherently a weak one because of a major mismatc...
Berkeley Lab researchers have developed a nano-sized optical antenna that can greatly enhance the spontaneous emission of light from atoms, molecules and semiconductor quantum dots. This advance opens...
Temporal coupled mode theory for thermal emission from a single thermal emitter supporting either a single mode or an orthogonal set of modes
Temporal coupled thermal emission single thermal emitter supporting either
2015/8/7
We propose a temporal coupled mode theory for thermal emission from a single emitter supporting either a single mode or an orthogonal set of modes. This temporal coupled mode theory provides analytic ...
Enhancing far-field thermal emission with thermal extraction
Enhancing thermal emission thermal extraction
2015/8/7
The control of thermal radiation is of great current importance for applications such as energy conversions and radiative cooling. Here we show theoretically that the thermal emission of a finit...
Three-dimensional self-assembled photonic crystals with high temperature stability for thermal emission modification
Three-dimensional self-assembled photonic crystals temperature stability thermal emission modifi cation
2015/8/7
Selective thermal emission in a useful range of energies from a material operating at high temperatures is required for effective solar thermophotovoltaic energy conversion.Three-dimensional metallic ...
Stimulated Emission from a Single Excited Atom in a Waveguide
Stimulated Emission Single Excited Atom Waveguide
2015/8/7
We study stimulated emission from an excited two-level atom coupled to a waveguide containing an incident single-photon pulse. We show that the strong photon correlation, as induced by the atom, plays...
Terahertz emission and spectroscopy on InN epilayer and nanostructure
Indium Nitride nanostructures THz emission THz time-domain spectroscopy non-Drude model
2011/12/12
We report a comprehensive study on THz emission and spectroscopy of indium nitride (InN) films and its nanorod arrays grown by plasma-assisted molecular beam epitaxy technique. For the enhancement of ...
Relation between side fluorescence and laser emission in an infrared-to-visible upconversion ZBLAN erbium-doped fiber
infrared-to-visible upconversion fiber laser
2011/5/5
The relation between spontaneous and induced emission, and to some extend amplified
spontaneous emission in an optical fiber, due to its very elongated active media shape (pencil-like
shape) is diff...
Tailoring rare-earth emission spectra through controlled energy transfer
Optical Materials Fiber Materials Fluorescent Luminescent Materials Rare-Earth-Doped Materials
2015/6/8
Optical fiber preforms were solution doped with lanthanide-containing nanoparticles. The nanoparticles spatially localize the doping yielding multiply-dopedglasses that did not show energy transfer. T...
Directional Emission Triangle and Square Semiconductor Microlasers
Semiconductor lasers Microcavity InGaAsP/InP
2009/6/1
Semiconductor microcavity lasers with directional emission are important for real applications. Different from the whispering-gallery modes (WGMs) in microdisk, the confined WGMs in triangle and squar...
Light Emission from Rare-Earth Doped Silicon Nanostructures
Light Emission Rare-Earth Doped Silicon Nanostructures
2009/5/19
Rare earth (Tb or Ce)-doped silicon oxides were deposited by electron cyclotron resonance plasma-enhanced chemical vapour deposition (ECR-PECVD). Silicon nanocrystals (Si-ncs) were formed in the silic...
Silicon Nanocrystals: Fundamental Theory and Implications for Stimulated Emission
Silicon Nanocrystals Fundamental Theory Stimulated Emission
2009/5/19
Silicon nanocrystals (NCs) represent one of the most promising material systems for light emission applications in microphotonics. In recent years, several groups have reported on the observation of o...
Two-dimensional numerical analysis on mid-infrared emission from IV-VI lead salt photonic crystal microcavity
lead salts plane wave expansion (PWE)
2011/5/10
An optimal design of two dimensional (2D) hexagonal photonic bandgap (PBG) resonating micro-optical defect cavity on IV-VI lead salt material has been carried out. The nature of both the transverse el...
Broadening of the Erbium Emission in Dielectric Nanoparticles Doped Silica-Based Fibres
Erbium Emission Dielectric Nanoparticles Doped Silica-Based Fibres
2015/7/30
To improve spectral gain properties of silica-based EDFA, we propose a new route by embedding Er ions into dielectric nanoparticles. Broadening of emission band and fibre characterizations are present...
Net emission coefficients of low temperature thermal iron-helium plasma
net emission coefficients iron-helium plasma
2011/5/5
Net emission coefficients of low temperature thermal iron-helium plasma mixture at atmospheric pressure are presented. The calculations are made assuming the plasma is in the local thermodynamic equil...