Results 201 to 210 of about 8,109 (228)

Picosecond pulse pumped supercontinuum generation in silicon waveguide with a weak continuous wave trigger

Journal of the Optical Society of America B, 2020
We numerically demonstrate that picosecond pulse pumped supercontinuum (SC) generation in a silicon waveguide can be enhanced with the assistance of a weak continuous-wave (CW) trigger. The bandwidth of the resulting SC is greatly improved. The effects of two-photon absorption, free-carrier absorption, and free-carrier dispersion on SC generation in ...
Guangkuo Li, Qian Li
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Effects of a Weak Continuous Wave Trigger on Picosecond Pulse Pumped Supercontinuum Generation in Silicon Nitride Waveguide

26th Optoelectronics and Communications Conference, 2021
We numerically demonstrate a weak continuous wave trigger is an efficient way to improve the bandwidth and coherence of picosecond pulse pumped supercontinuum generation in silicon nitride waveguide, especially in the mid-infrared region.
Kaibin Lin, Qian Li
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Weak links array generated by a continuous wave laser in a superconducting sample

Optik, 2018
Abstract Vortex state and magnetic response in a disk with an array of weakly-superconducting (or normal regions) created in the sample increasing the temperature T locally by using a continuous wave laser (CWL) that emits a beam with a controlled heat output, beam duration and intensity are studied.
J.D. González, J.R. Beltrán, J. Barba-Ortega   +2 more
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Characteristics of supercontinuum generation under the influence of a weak continuous-wave trigger

IEEE Photonic Society 24th Annual Meeting, 2011
We numerically study the impacts of introducing a minute continuous-wave trigger on the properties of picosecond supercontinuum generation; namely the bandwidth, temporal coherence and pulse-to-pulse stability.
Tsia, KK, Li, F, Wai, PKA, Lau, APT, Wong, KKY, Li, Q   +5 more
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Influence of Two Weak Continuous Wave Triggers on Picosecond Supercontinuum Generation

Frontiers in Optics 2016, 2016
We numerically demonstrate the improvement in the pulse-to-pulse stability in the picosecond supercontinuum generation by using two weak continuous wave triggers.
Ji Zhu, Cai Wen, Qian Li
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Picosecond Pulse Pumped Supercontinuum Generation in Silicon-on-insulator Waveguide with a Weak Continuous Wave Trigger

Frontiers in Optics / Laser Science, 2018
We investigate the effect of a weak continuous-wave trigger on picosecond pulse pumped supercontinuum generation in silicon-on-insulator waveguide. A spectrally broadened and highly coherent supercontinuum is achieved.
Guangkuo Li, Qian Li
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Subdiffusive continuous time random walks and weak ergodicity breaking analyzed with the distribution of generalized diffusivities

EPL (Europhysics Letters), 2013
We propose a new tool for analyzing data from anomalous diffusion processes: The distribution of generalized diffusivities pα(D,τ) describes the fluctuations during the diffusion process around the generalized diffusion coefficient obtained from the mean squared displacement and its τ-dependence captures the non-trivial part of the process dynamics. We
T. Albers, G. Radons
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Control of optical rogue waves in the femtosecond supercontinuum generation using a weak continuous wave trigger

2015 11th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2015
We numerically study the characteristics of optical rogue waves in the femtosecond supercontinuum generation. The continuous wave trigger is proved to be an effective way to control optical rogue waves in the femtosecond supercontinuum generation.
Xiaoqi Duan, Qian Li
openaire   +1 more source

Continuous invertibility of a boundary control operator for the wave equation on subcritical intervals in classes of weak generalized solutions

Moscow University Computational Mathematics and Cybernetics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ivanov, D. A., Potapov, M. M.
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Derivation of general algebraic constraint conditions for ‘weak’ C¹ continuity for thin shells

International Journal for Numerical Methods in Engineering, 1977
AbstractEmploying C0 conforming thin shell elements, a derivation of general algebraic equations for enforcing C1 interelement continuity in a ‘weak’ (that is, integral) sense is presented. ‘Restoration’ of strict C1 continuity is treated as a special case of the proposed concept. The cónstraint equations do not depend on the metric of the given shell.
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