Nonlinear Dynamics at the Meso- and Nanoscale: Stochasticity Meets Determinism

Wang, T.; Puccioni, G. P.; Lippi, G. L.

doi:10.1109/compeng.2018.8536235

Cited by 2 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aiming at future on chip and datacenter applications, which require extremely low power consumption, we concentrate on the investigation of feedback on the emission at bias current levels in the region between the first light emission and the traditional threshold [37], where we have shown that it is possible to obtain reliable pulse generation at lower energetic costs [38]. Our objective is threefold: understanding the dynamical influence of feedback on a small (mesoscale) laser at ultra-low bias (i.e., below the traditional threshold) where the deterministic dynamics mixes with stochastic behaviour [39]; testing the predictive capabilities of fully stochastic modeling [40]; and probing the second-order (zerodelay) autocorrelation as a suitable dynamical indicator. This last point aims at validating, on a micro-VCSEL [41], the use of the only technique currently usable to characterize nanolasers, the target devices for datacom applications.…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Dynamics of a Micro-VCSEL Operated in the Threshold Region Under Low-Level Optical Feedback

Wang

Deng

et al. 2019

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

Semiconductor lasers are notoriously sensitive to optical feedback, and their dynamics and coherence can be significantly modified through optical reinjection. We concentrate on the dynamical properties of a very small (i.e., microscale) Vertical Cavity Surface Emitting Laser (VCSEL) operated in the low coherence region between the emission of (partially) coherent pulses and ending below the accepted macroscopic lasing threshold, with the double objective of: 1. studying the feedback influence in a regime of very low energy consumption; 2. using the micro-VCSEL as a surrogate for nanolasers, where measurements can only be based on photon statistics. The experimental investigation is based on time traces and radiofrequency spectra (common for macroscale devices) and correlation functions (required at the nanoscale). Comparison of these results confirms the ability of correlation functions to satisfactorily characterize the action of feedback on the laser dynamics. Numerical predictions obtained from a previously developed, fully stochastic modeling technique provide very close agreement with the experimental observations, thus supporting the possible extension of our observations to the nanoscale.

show abstract

Section: Introduction and Objectivesmentioning

confidence: 99%

Dynamics of a Micro-VCSEL Operated in the Threshold Region Under Low-Level Optical Feedback

Wang

Deng

et al. 2019

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

show abstract

“…Recent work in small-scale devices ("high-β" lasers) subject to optical feedback reveals interesting physics, including chaos [18], modeswitching [19], linewidth enhancement [20] and various nonlinear dynamical phenomena [21,22]. However, a complete understanding of the physical mechanisms as the basis of this behaviour at the nanoscale still needs further investigation, given the simultaneous role played by deterministic rules -which determine the dynamicsand stochastic effects -originating from the spontaneous processes -in the behaviour of nanodevices [23].…”

Section: Introductionmentioning

confidence: 99%

Photon statistics and dynamics of nanolasers subject to intensity feedback

et al. 2020

Self Cite

View full text Add to dashboard Cite

Using a fully stochastic numerical scheme, we investigate the behaviour of a nanolaser in the low-coherence regime at the transition between spontaneous emission and lasing under the influence of intensity feedback. Studying the input-output curves as well as the second order correlations for different feedback fractions, we obtain an insight on the role played by the fraction of photons reinjected into the cavity. The interpretation of the observation is strengthened through the comparison with the temporal traces of the emitted photons and with the radiofrequency power spectra. The results give insight into the physics of nanolasers as well as validate the use of the second order autocorrelation as a sufficient tool for the interpretation of the dynamics. This confirmation offers a solid basis for the reliance on autocorrelations in experiments studying the effects of feedback in nanodevices.

show abstract

Nonlinear Dynamics at the Meso- and Nanoscale: Stochasticity Meets Determinism

Cited by 2 publications

References 30 publications

Dynamics of a Micro-VCSEL Operated in the Threshold Region Under Low-Level Optical Feedback

Dynamics of a Micro-VCSEL Operated in the Threshold Region Under Low-Level Optical Feedback

Photon statistics and dynamics of nanolasers subject to intensity feedback

Contact Info

Product

Resources

About