Stability of Optically Injected Two‐State Quantum‐Dot Lasers

Meinecke, Stefan; Lingnau, Benjamin; Röhm, André; Lüdge, Kathy

doi:10.1002/andp.201600279

Cited by 19 publications

(7 citation statements)

References 44 publications

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“…2(e) and Fig. 3(c), was also experimentally observed in conventional two mode lasers [14] and explained by the underlying transcritical bifurcation [15,17] Figs. 3(b) and 3(d) presents experimental data recorded under optical injection into the WM.…”

Section: Experimental and Numerical Resultssupporting

confidence: 65%

“…micro-and nanolasers. In this context, optical injection and coupling are successful approaches to generate highly complex dynamics in semiconductor lasers [14,15]. Particularly interesting complex dynamics are presented by vertically emitting lasers, where polarization chaoticswitching dynamics can be induced by optical injection [19,20], with potential applications in microwave generation [21] and in all-optical flip-flop photonic integrated devices [22][23][24].…”

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confidence: 99%

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Stochastic polarization switching induced by optical injection in bimodal quantum-dot micropillar lasers

et al. 2019

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Mutual coupling and injection locking of semiconductor lasers is of great interest in non-linear dynamics and its applications for instance in secure data communication and photonic reservoir computing. Despite its importance, it has hardly been studied in microlasers operating at µW light levels. In this context, vertically emitting quantum dot micropillar lasers are of high interest. Usually, their light emission is bimodal, and the gain competition of the associated linearly polarized fundamental emission modes results in complex switching dynamics. We report on selective optical injection into either one of the two fundamental mode components of a bimodal micropillar laser. Both modes can lock to the master laser and influence the non-injected mode by reducing the available gain. We demonstrate that the switching dynamics can be tailored externally via optical injection in very good agreement with our theory based on semi-classical rate equations.

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Section: Experimental and Numerical Resultssupporting

confidence: 65%

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confidence: 99%

Stochastic polarization switching induced by optical injection in bimodal quantum-dot micropillar lasers

et al. 2019

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“…the reduction of effective optical losses of the weak mode by 2.5%, thus reducing the required inversion of the QDs to maintain lasing and reducing the available gain for the strong modes, as known from two-mode lasers in other setups [62][63][64]. In Fig.…”

Section: Intensity Auto-and Cross-correlationsmentioning

confidence: 99%

Mutual coupling and synchronization of optically coupled quantum-dot micropillar lasers at ultra-low light levels

et al. 2019

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Synchronization of coupled oscillators at the transition between classical physics and quantum physics has become an emerging research topic at the crossroads of nonlinear dynamics and nanophotonics. We study this unexplored field by using quantum dot microlasers as optical oscillators. Operating in the regime of cavity quantum electrodynamics (cQED) with an intracavity photon number on the order of 10 and output powers in the 100 nW range, these devices have high β -factors associated with enhanced spontaneous emission noise. We identify synchronization of mutually coupled microlasers via frequency locking associated with a sub-gigahertz locking range. A theoretical analysis of the coupling behavior reveals striking differences from optical synchronization in the classical domain with negligible spontaneous emission noise. Beyond that, additional self-feedback leads to zero-lag synchronization of coupled microlasers at ultra-low light levels. Our work has high potential to pave the way for future experiments in the quantum regime of synchronization.

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“…Once the bias current reaches the second threshold, both the GS and ES emission can simultaneously oscillate in the TSQDLs [24,25]. Through adopting some techniques, only the GS emission or ES emission exists in the QDLs, and corresponding QDLs are named as GSQDLs or ESQDLs.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Mode Characteristics of an Excited-State Quantum Dot Laser under Concave Mirror Optical Feedback

et al. 2023

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In this paper, we experimentally investigated the mode configuration of an excited-state quantum dot laser (ESQDL) under concave mirror optical feedback, and the influences of the feedback strength on the mode characteristics were analyzed. The results showed that after introducing concave mirror optical feedback, some longitudinal modes of the excited-state (ES) existing in a free-running ESQDL could be suppressed. When the feedback strength increased to a certain extent, the ground-state (GS) emission occurred and co-existed with the ES emission. By further increasing the feedback strength, all the longitudinal modes of the ES emission were suppressed, and only the longitudinal modes of the GS emission could be observed. As a result, the emission-state switching from the ES to GS emission was realized. When the ESQDL was biased at a larger current, the feedback strength required to achieve emission-state switching was stronger.

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Stability of Optically Injected Two‐State Quantum‐Dot Lasers

Cited by 19 publications

References 44 publications

Stochastic polarization switching induced by optical injection in bimodal quantum-dot micropillar lasers

Stochastic polarization switching induced by optical injection in bimodal quantum-dot micropillar lasers

Mutual coupling and synchronization of optically coupled quantum-dot micropillar lasers at ultra-low light levels

Experimental Investigation on the Mode Characteristics of an Excited-State Quantum Dot Laser under Concave Mirror Optical Feedback

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