搜索结果: 1-15 共查到“物理学 Vapor”相关记录18条 . 查询时间(0.062 秒)
Image Transfer through Two Sequential Four-Wave Mixing in a Hot Atomic Vapor
Image Transfer Two Sequential Four-Wave Hot Atomic Vapor Optics
2012/5/31
Efficient wavelength conversion of images has many potential applications in optical communication, sensing, imaging, and quantum information fields. In this work, we report on here the first demonstr...
Fabrication and characterization of an electrically contacted vapor cell
Fabrication and characterization electrically contacted vapor cell Atomic Physics
2012/4/20
We demonstrate the use of electrically contacted vapor cells to switch the transmission of a probe laser. The excitation scheme makes use of electromagnetically induced transparency involving a Rydber...
Vapor-Solid Growth of Monocrystalline Zinc Nanoplates
Zinc Nanoplates Thermal evaporation Anisotropic growth
2011/12/15
Zinc nanoplates of two kinds of basal surfaces were grown using a non-catalytic and template-free thermal evaporation. High resolution tunneling electron microscopy and selected area electron diffract...
Controllable ultra-broadband slow light in a warm Rubidium vapor
Controllable ultra-broadband slow light Rubidium vapor Optics
2011/8/18
Abstract: We study ultra-broadband slow light in a warm Rubidium vapor cell. By working between the D1 and D2 transitions, we find a several-nm window centered at 788.4 nm in which the group index is ...
Polarization squeezing of light by single passage through an atomic vapor
Polarization squeezing single passage atomic vapor
2011/8/17
Abstract: We have studied relative-intensity fluctuations for a variable set of orthogonal elliptic polarization components of a linearly polarized laser beam traversing a resonant $^{87}$Rb vapor cel...
Stroboscopic back-action evasion in a dense alkali-metal vapor
Stroboscopic alkali-metal vapor
2010/11/17
We explore experimentally quantum non-demolition (QND) measurements of atomic spin in a hot potassium vapor in the presence of spin-exchange relaxation. We demonstrate a new technique for back-action...
FFT-LB modeling of thermal liquid-vapor systems
FFT-LB modeling thermal liquid-vapor systems
2010/11/23
We further develop a thermal LB model for multiphase flows. In the improved model, we propose to use the FFT scheme to calculate both the convection term and external force term. The usage of FFT sche...
Seunghyun Lee, Kyunghoon Lee, Zhaohui Zhong Wafer Scale Homogeneous Bilayer Graphene Films by Chemical Vapor Deposition
Graphene, bilayer chemical vapor deposition wafer scale bandgap opening
2010/11/24
The discovery of electric field induced bandgap opening in bilayer graphene opens new door for making semiconducting graphene without aggressive size scaling or using expensive substrates. However, bi...
Measurements of vector magnetic field using multiple electromagnetically induced transparency resonances in Rb vapor
magnetic field Rb vapor
2010/11/12
We study intensity distribution of transmission resonances under the conditions of electromagnetically induced transparency (EIT) with lin||lin configuration in 87Rb vapor. We demonstrate that for va...
Single-crystal Grains and Grain Boundaries in Graphene Grown by Chemical Vapor Deposition
Single-crystal Grains Grain Boundaries Chemical Vapor Deposition
2010/11/25
Graphene has attracted enormous attention due to its numerous remarkable properties and wide range of potential applications. To fully realize its potential, graphene needs to be synthesized in large ...
Raman and optical characterization of multilayer turbostratic graphene grown via chemical vapor deposition
Raman optical characterization chemical vapor deposition
2010/11/19
We synthesize large-area graphene via atmospheric-pressure (AP) chemical vapor deposition
(CVD) on copper, and transfer to SiO2 wafers. In contrast to low-pressure (LP) CVD on copper,
optical contra...
Non-degenerate four-wave mixing in rubidium vapor: transient regime
Non-degenerate four-wave mixing rubidium vapor transient regime
2010/11/9
We investigate the transient response of the generated light from Four-Wave Mixing (FWM) in the diamond configuration using a step-down field excitation. The transients show fast decay times and oscil...
Triply-resonant Optical Parametric Oscillator by Four-wave Mixing with Rubidium Vapor inside an Optical Cavity
Optical Parametric Oscillator Four-wave Mixing Optical Cavity
2010/3/10
We present an experimental demonstration of simultaneous above-threshold oscillations of the Stokes and anti-Stokes fields together with the single pumping beam with rubidium atoms inside an optical s...
Ultra-bright biphoton emission from an atomic vapor based on Doppler-free four-wave-mixing and collective emission
atomic vapor Doppler-free four-wave-mixing biphoton emission
2010/4/12
We propose a novel `butterfly' level scheme to generate highly correlated photon pairs from atomic vapors. With multi-photon Doppler-free pumping, background Rayleigh scattering is dipole-forbidden an...
Observation of prolonged coherence time of the collective spin wave of atomic ensemble in a paraffin coated Rb vapor cell
prolonged coherence collective spin wave atomic paraffin coated Rb vapor cell
2010/4/9
We report a prolonged coherence time of the collective spin wave of a thermal 87Rb atomic ensemble in a paraffin coated cell. The spin wave is prepared through a stimulated Raman Process. The long coh...