The Experts below are selected from a list of 6456 Experts worldwide ranked by ideXlab platform
Hao Xiong - One of the best experts on this subject based on the ideXlab platform.
-
highly sensitive optical sensor for precision measurement of electrical charges based on optomechanically induced difference sideband generation
Optics Letters, 2017Co-Authors: Hao Xiong, Ying WuAbstract:Difference-sideband generation in an optomechanical system coupled to a Charged Object is investigated beyond the conventional linearized description of optomechanical interactions. An exponential decay law for difference-sideband generation in the presence of electric interaction is identified which exhibits more sensitivity to electrical charges than the conventional linearized effects. Using the exact same parameters with previous work based on the linearized dynamics of the optomechanical interactions, we show that optomechanically induced difference-sideband generation may enable an all-optical sensor for precision measurement of electrical charges with higher precision and lower power. The proposed mechanism is especially suited for on-chip optomechanical devices, where nonlinear optomechanical interaction in the weak coupling regime is within current experimental reach.
-
coulomb interaction dependent effect of high order sideband generation in an optomechanical system
Physical Review A, 2017Co-Authors: Cui Kong, Hao XiongAbstract:High-order sideband generation in an optomechanical system coupled to a Charged Object is discussed, and the features of Coulomb-interaction-dependent effect are identified. We show that the Coulomb-interaction-dependent effect of high-order sideband generation exhibits essential difference between the case of weak control field and strong control field. In the weak control field case, the output spectra are in the perturbative regime and there is hardly any Coulomb-interaction-dependent effect in an optomechanical system coupling to an Object with a small amount of charge. In the strong control field case, the output spectra are in the nonperturbative regime and robust Coulomb-interaction-dependent effect arises even if there are few charges. The amplitudes of specific sidebands are also discussed, and it is shown that Coulomb interaction plays an important role in achieving optomechanical control. Due to the extremely sensitive charge number, the Coulomb-interaction-dependent effect of high-order sideband generation is remarkable in many aspects and may be used to precision measurement of electrical charges beyond the linearized optomechanical interaction.
Yi Xu - One of the best experts on this subject based on the ideXlab platform.
-
precision measurement of electrical charge with optomechanically induced transparency
Physical Review A, 2012Co-Authors: Jianqi Zhang, Yong Li, Mang Feng, Yi XuAbstract:We propose a potentially practical scheme to precisely measure the charge number of small Charged Objects by using optomechanically induced transparency (OMIT) in optomechanical systems. In contrast to conventional measurements based on noise backaction on optomechanical systems, our scheme presents an alternative way to detect the charge number exactly, by monitoring small deformation of the mechanical resonator sensitive to the charge number of nearby Charged Object. The relationship between the charge number and the OMIT window width is investigated and the feasibility of the scheme is justified by numerical simulation with currently available experimental values.
Ying Wu - One of the best experts on this subject based on the ideXlab platform.
-
highly sensitive optical sensor for precision measurement of electrical charges based on optomechanically induced difference sideband generation
Optics Letters, 2017Co-Authors: Hao Xiong, Ying WuAbstract:Difference-sideband generation in an optomechanical system coupled to a Charged Object is investigated beyond the conventional linearized description of optomechanical interactions. An exponential decay law for difference-sideband generation in the presence of electric interaction is identified which exhibits more sensitivity to electrical charges than the conventional linearized effects. Using the exact same parameters with previous work based on the linearized dynamics of the optomechanical interactions, we show that optomechanically induced difference-sideband generation may enable an all-optical sensor for precision measurement of electrical charges with higher precision and lower power. The proposed mechanism is especially suited for on-chip optomechanical devices, where nonlinear optomechanical interaction in the weak coupling regime is within current experimental reach.
Christoph Lhotka - One of the best experts on this subject based on the ideXlab platform.
-
charging time scales and magnitudes of dust and spacecraft potentials in space plasma scenarios
Physics of Plasmas, 2020Co-Authors: Christoph Lhotka, N Rubab, Owen Roberts, J Holmes, K Torkar, R NakamuraAbstract:We investigate the interaction of dust with space plasmas and spacecraft with a special focus on the typical values of equilibrium charge and the typical time scales required to reach them. It is well known that Objects in space become Charged through the combination of a number of different processes: the photoelectric effect, the collection of free electrons and ions from the plasma, and by secondary electron emission due to the impact of highly energetic particles. In the equilibrium state, currents between the plasma and the Charged Object are balanced. However, perturbations on the orbit of the Charged body and perturbations of the distribution of plasma particles may lead to time dependent deviations in charge. In this study, we are interested in order of magnitude estimates of these deviations as well as the time scales on which a Charged body in space recovers to the equilibrium charge. Our study includes Maxwellian and Kappa plasma particle distribution functions and the role of motion on Charged dust, as well as the effect of dust impacts on time dependent spacecraft potentials. We derive simple relationships on order of magnitude estimates and on time scales of different charging processes and apply our results to Charged dust in the heliosphere and spacecraft potential analysis of the Magnetospheric MultiScale Mission around the Earth.
Cui Kong - One of the best experts on this subject based on the ideXlab platform.
-
coulomb interaction dependent effect of high order sideband generation in an optomechanical system
Physical Review A, 2017Co-Authors: Cui Kong, Hao XiongAbstract:High-order sideband generation in an optomechanical system coupled to a Charged Object is discussed, and the features of Coulomb-interaction-dependent effect are identified. We show that the Coulomb-interaction-dependent effect of high-order sideband generation exhibits essential difference between the case of weak control field and strong control field. In the weak control field case, the output spectra are in the perturbative regime and there is hardly any Coulomb-interaction-dependent effect in an optomechanical system coupling to an Object with a small amount of charge. In the strong control field case, the output spectra are in the nonperturbative regime and robust Coulomb-interaction-dependent effect arises even if there are few charges. The amplitudes of specific sidebands are also discussed, and it is shown that Coulomb interaction plays an important role in achieving optomechanical control. Due to the extremely sensitive charge number, the Coulomb-interaction-dependent effect of high-order sideband generation is remarkable in many aspects and may be used to precision measurement of electrical charges beyond the linearized optomechanical interaction.