搜索结果: 1-15 共查到“物理学 Optically”相关记录21条 . 查询时间(0.093 秒)
Competition between electronic Kerr and free carrier effects in an ultimate-fast optically switched semiconductor microcavity
electronic Kerr free carrier effects semiconductor microcavity Optics
2012/5/17
We have performed ultrafast pump-probe experiments on a GaAs-AlAs microcavity with a resonance near 1300 nm in the "original" telecom band. We concentrate on ultimate-fast optical switching of the cav...
Efficient method of designing optically-pumped vertical external cavity surface emitting lasers having equally excited quantum wells
Efficient method optically-pumped vertical external cavity surface emitting lasers equally excited quantum wells Optics
2012/4/20
Even distribution of carriers allows to maximize optical gain of the Optically-Pumped Vertical External Cavity Surface Emitting Laser. In this paper we show how to distribute the quantum wells and blo...
Laser stabilization to an atomic transition using an optically generated dispersive lineshape
Laser stabilization atomic transition optically generated dispersive lineshape Atomic Physics
2012/4/19
We report on a simple and robust technique to generate a dispersive signal which serves as an error signal to electronically stabilize a monomode cw laser emitting around an atomic resonance. We explo...
Depth Profile of Optically Recorded Patterns in Light-Sensitive Liquid Crystal Elastomers
Depth Profile Optically Recorded Patterns Light-Sensitive Liquid Crystal Elastomers
2011/8/11
Abstract: We investigated nonlinear absorption and photobleaching processes in a liquid crystal elastomer (LCE) doped with light-sensitive azobenzene moiety. A conventional one-dimensional holographic...
Population redistribution in optically trapped polar molecules
Population redistribution polar molecules Atomic Physics
2011/8/3
Abstract: We investigate the rovibrational population redistribution of polar molecules in the electronic ground state induced by spontaneous emission and blackbody radiation. As a model system we use...
Surface optomechanics: Calculating optically excited acoustical whispering gallery modes in microspheres
optomechanics Calculating optically microspheres
2011/9/5
Stimulated Brillouin scattering recently allowed experimental excitation of surface acoustic resonances in micro-devices, enabling vibration at rates in the range of 50 MHz to 12 GHz. The experimental...
Controlled Betatron X-ray radiation from tunable optically injected electrons
Betatron X-ray radiation tunable optically injected electrons
2011/9/5
The features of Betatron X-ray emission produced in a laser-plasma accelerator are closely linked to the properties of the relativistic electrons which are at the origin of the radiation. While in int...
Optically controllable photonic structures with zero absorption
Optically photonic structures zero absorption
2011/9/9
We show the possibility to periodically modulate refractive index in atomic medium in space or/and time while simultaneously keeping vanishing absorption/gain. Such modulation is based on periodic res...
Optically induced spin polarisation of the NV- centre in diamond: role of electron-vibration interaction
Optically induced spin polarisation NV- centre in diamond: role electron-vibration interaction
2010/11/22
The novel aspect of the centre (NV−) in diamond is the high degree of spin polarisation achieved through optical illumination. In this paper it is shown that the spin polarisation occurs as a co...
Fast production of large 23Na Bose-Einstein condensates in an optically plugged magnetic quadrupole trap
optically plugged magnetic quadrupole trap
2010/11/18
We demonstrate a fast production of large 23Na Bose-Einstein condensates in an optically plugged,magnetic quadrupole trap. A single global minimum of the trapping potential is generated by slightly di...
Terahertz surface plasmons in optically pumped graphene structures
Terahertz surface plasmons optically pumped graphene structures
2010/11/17
We analyze the surface plasmons (SPs) propagating along the optically pumped single-graphene
layer (SGL) and multiple-graphene layer (MGL) structures. It is shown that at sufficiently strong optical ...
Amplified Stimulated Terahertz Emission at Room temperature from Optically Pumped Graphene
Terahertz Emission Room temperature Optically Pumped Graphene
2010/11/17
Room temperature Terahertz stimulated emission and population inversion in optically pumped graphene is reported. We experimentally observe fast relaxation and relatively slow recombination dynamics ...
Amplified Stimulated Terahertz Emission at Room temperature from Optically Pumped Graphene
Amplified Stimulated Terahertz Emission Room temperature Optically Pumped Graphene
2010/11/22
Room temperature Terahertz stimulated emission and population inversion in optically
pumped graphene is reported. We experimentally observe fast relaxation and relatively slow recombination dynamics ...
Optically Levitating Dielectrics in the Quantum Regime: Theory and Protocols
Optically Levitating Dielectrics Quantum Regime Theory Protocols
2010/11/5
We provide a general quantum theory to describe the coupling of light with the motion of a dielectric object inside a high finesse optical cavity. In particular, we derive the total Hamiltonian of the...
Entangling unstable optically active matter qubits
Entangling unstable optically active matter qubits
2010/10/20
In distributed quantum computation, small devices composed of a single or a few qubits are networker together to achieve a scalable machine. Typically there is an optically active matter qubit at each...