New dynamical nonlinear mechanism, a way to enhance nonlinear efficiency and detect ultrafast electronic processes in photonic crystals

Dou, Yushen; Shi, Xueyang; Jiang, Xunya

doi:10.1364/oe.27.035710

Cited by 4 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chang and Wang 13 established a rocker-rocker mechanism model with flexible coupler, studied the impact of nonlinearity and flexibility on dynamics of mechanism. Dou et al 14 explored the energy efficiency of a new dynamic nonlinear mechanism. Figueiredo et al 15 discussed classical nonlinear dynamic mechanism that causes IMD asymmetry under multi tone excitation from the system level, and proved the limitation of mechanism based IMD analysis when nonlinear dynamic effects exist through theoretical examples.…”

Section: Introductionmentioning

confidence: 99%

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Gao,

Fan,

Fan

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

This paper proposes a new optimization method by immune algorithm to reduce the impact of clearance joint and wear on the dynamics of mechanisms. Firstly, the dynamic model of crank-slider mechanism is built by Lagrange principle, and the wear phenomenon of clearance joint is characterized by Archard model. Then, the motion function reliability model of mechanism is presented by Stress-Strength interference (SSI) theory. Secondly, the optimization model of mechanism is derived and the surrogate model of the maximum contact force of clearance joint is indicated by response surface method (RSM), the immune algorithm is used to find the optimal solution of the surrogate model. Finally, the impact of wear and optimization on dynamic behavior, nonlinear dynamics, and motion function reliability of mechanism is investigated. The results show that wear clearance joint seriously affects the performance of mechanism. After optimization, the dynamic behavior and nonlinear dynamics of mechanism are improved, and the motion function reliability of mechanism is increased. This paper raises foundation for predicting the performance of mechanisms considering wear clearance joint, and provides theoretical guidance for optimization design and fault diagnosis of mechanisms.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Gao,

Fan,

Fan

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…13,14 Similarly, FP cavities combined with graphene, magnetic plasmons, and metal nanocavities can also be used to realize an electrical switching effect, 15 plasmonic biosensors, 16 or label-free biosensing. [17][18][19][20] In our previous studies on the ultrafast dynamic nonlinear mechanism of PhCs with femtosecond (fs) pumping, 21,22 we only focused on the transmission change of a certain frequency at the edge of the gap region and ignored strange phenomena caused by the ultrafast dynamic nonlinear effect in other frequency regions, especially in the band region (e.g., the transmission is sloped from the original flat structure). This phenomenon was observed through numerical simulation for the first time, and the transmission of certain frequencies was significantly larger than unity, which has great application prospect.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐fast dynamic nonlinear mechanism of Fabry–Perot cavity with femtosecond pumping

Shi

Jiang

2022

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

We numerically investigate the ultrafast dynamic nonlinear mechanism of an Fabry-Perot (FP) cavity with femtosecond (fs) pumping by the transmission change of an incident signal pulse. The nonlinear effect simulated by a twolevel system model can decrease the dielectric constant. Therefore, the temporally transmitted pulse is compressed owing to the faster phase velocity, and a sloped change in the transmission spectra is observed, which can be explained by the mechanism of pulse deformation. In addition, we stretched a certain part of the temporally transmitted pulse to further demonstrate the deformation of the pulse mechanism. This dynamic nonlinear mechanism based on the FP cavity can not only be used to design new optical devices with ultrafast response times, such as pulse modulators and passive amplifiers, but can also be easily constructed and integrated, which has great practical applications.

show abstract

Ultrafast carrier relaxation in SnSe (x=1, 2) thin films observed using femtosecond time-resolved transient absorption spectroscopy

Yan

Han

et al. 2020

Optical Materials

View full text Add to dashboard Cite

New dynamical nonlinear mechanism, a way to enhance nonlinear efficiency and detect ultrafast electronic processes in photonic crystals

Cited by 4 publications

References 28 publications

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Ultra‐fast dynamic nonlinear mechanism of Fabry–Perot cavity with femtosecond pumping

Ultrafast carrier relaxation in SnSe (x=1, 2) thin films observed using femtosecond time-resolved transient absorption spectroscopy

Contact Info

Product

Resources

About