Laser mode feeding by shaking quantum dots in a planar microcavity

Brüggemann, Christian; Akimov, A. V.; Scherbakov, A. V.; Bombeck, M.; Schneider, Christian; Höfling, Sven; Forchel, A.; Yakovlev, D. R.; Bayer, М.

doi:10.1038/nphoton.2011.269

Cited by 80 publications

(79 citation statements)

References 29 publications

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“…Picosecond strain pulses in GaN QWs may be used for the modulation of UV light sources. The amplitude modulation of the laser emission in this case may reach 100%, similar to experiments performed in the near infrared with GaAs-based vertical lasers [27,28]. Another attractive field for application is UV nanoscopy [9], where the combination of short optical wavelengths and picosecond strain pulses allows one to reach nanometer resolution in measuring photonic and plasmonic fields and defects buried in GaN-based nanostructures.…”

Section: Discussionsupporting

confidence: 63%

Picosecond Acoustics in Single Quantum Wells of Cubic GaN/(Al,Ga)N

et al. 2017

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A picosecond acoustic pulse is used to study the photoelastic interaction in single zinc-blende GaN=Al x Ga 1−x N quantum wells. We use an optical time-resolved pump-probe setup and demonstrate that tuning the photon energy to the quantum well's lowest electron-hole transition makes the experiment sensitive to the quantum well only. Because of the small width, its temporal and spatial resolution allows us to track the few-picosecond-long transit of the acoustic pulse. We further deploy a model to analyze the unknown photoelastic coupling strength of the quantum well for different photon energies and find good agreement with the experiments.

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Section: Discussionsupporting

confidence: 63%

Picosecond Acoustics in Single Quantum Wells of Cubic GaN/(Al,Ga)N

et al. 2017

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“…In particular, it was found out that the SLs are able to amplify the hypersonic acoustic waves by mechanisms involving either the interwell tunnelling [19] or the stimulated Cherenkov effect [21]. It was also recently shown that acoustic stimuli can be utilised as a powerful mean to induce and to control high-frequency transport and resulting emission of electromagnetic waves in semiconductor heterostructres [22][23][24]. Although a certain progress has been achieved in understanding of the related highfrequency electro-acoustic phenomena [25][26][27], the underlying physical mechanisms and the related nonlinear dynamics are still poorly studied [28].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics and band transport in a superlattice driven by a plane wave

et al. 2017

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A quantum particle transport induced in a spatially-periodic potential by a propagating plane wave has a number important implications in a range of topical physical systems. Examples include acoustically driven semiconductor superlattices and cold atoms in optical crystal. Here we apply kinetic description of the directed transport in a superlattice beyond standard linear approximation, and utilize exact path-integral solutions of the semiclassical transport equation. We show that the particle drift and average velocities have non-monotonic dependence on the wave amplitude with several prominent extrema. Such nontrivial kinetic behaviour is related to global bifurcations developing with an increase of the wave amplitude. They cause dramatic transformations of the system phase space and lead to changes of the transport regime. We describe different types of phase trajectories contributing to the directed transport and analyse their spectral content.

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“…The generation, detection and control of ultrahigh frequency phonons have been a topic of intense research [5][6][7][8][9][10] . Plasmons are effective for localizing light in a subwavelength volume and are ideal candidates for manipulating nanoscale mechanical motion because of their large absorption cross-sections, subwavelength field localization and high sensitivity to geometry and refractive index changes.…”

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confidence: 99%

Ultrafast acousto-plasmonic control and sensing in complex nanostructures

et al. 2014

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Coherent acoustic phonons modulate optical, electronic and mechanical properties at ultrahigh frequencies and can be exploited for applications such as ultratrace chemical detection, ultrafast lasers and transducers. Owing to their large absorption cross-sections and high sensitivities, nanoplasmonic resonators are used to generate coherent phonons up to terahertz frequencies. Generating, detecting and controlling such ultrahigh frequency phonons has been a topic of intense research. Here we report that by designing plasmonic nanostructures exhibiting multimodal phonon interference, we can detect the spatial properties of complex phonon modes below the optical wavelength through the interplay between plasmons and phonons. This allows detection of complex nanomechanical dynamics by polarization-resolved transient absorption spectroscopy. Moreover, we demonstrate that the multiple vibrational states in nanostructures can be tailored by manipulating the geometry and dynamically selected by acousto-plasmonic coherent control. This allows enhancement, detection and coherent generation of tunable strains using surface plasmons.

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Laser mode feeding by shaking quantum dots in a planar microcavity

Cited by 80 publications

References 29 publications

Picosecond Acoustics in Single Quantum Wells of Cubic GaN/(Al,Ga)N

Picosecond Acoustics in Single Quantum Wells of Cubic GaN/(Al,Ga)N

Nonlinear dynamics and band transport in a superlattice driven by a plane wave

Ultrafast acousto-plasmonic control and sensing in complex nanostructures

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