Issue |
EPL
Volume 103, Number 1, July 2013
|
|
---|---|---|
Article Number | 14002 | |
Number of page(s) | 6 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/103/14002 | |
Published online | 19 July 2013 |
Optical injection enables coherence resonance in quantum-dot lasers
Institut für Theoretische Physik, Technische Universität Berlin - D-10623 Berlin, Germany, EU
(a) luedge@physik.tu-berlin.de
Received: 6 March 2013
Accepted: 18 June 2013
We demonstrate that optically injected semiconductor quantum-dot lasers operated in the frequency-locked regime exhibit the counterintuitive effect of coherence resonance, i.e., the regularity of noise-induced spiking is a non-monotonic function of the spontaneous emission noise, and it is optimally correlated at a non-zero value of the noise intensity. We uncover the mechanism of coherence resonance from a microscopically based model of the quantum-dot laser structure, and show that it is related to excitability under optical injection and to a saddle-node infinite period (SNIPER) bifurcation occurring for small injection strength at the border of the frequency locking regime. By a model reduction we argue that the phenomenon of coherence resonance is generic for a wide class of optically injected lasers.
PACS: 42.60.Mi – Dynamical laser instabilities; noisy laser behavior / 05.45.-a – Nonlinear dynamics and chaos / 42.55.Px – Semiconductor lasers; laser diodes
© EPLA, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.