Optical bistability

Reinisch, R.; Vitrant, G.

doi:10.1016/0079-6727(94)90004-3

Cited by 21 publications

(10 citation statements)

References 110 publications

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“…La bistabilité peut être intrinsèque lorsqu'elle exploite la contre-réaction intrinsèque de l'interaction laser-matière. Plus fréquemment la bistabilité est due à une contre-réaction optique artificiellement introduite par la présence de miroirs qui renvoient la lumière sur elle-même [28]. C'est le cas des résonateurs de Fabry-Perot non linéaires par exemple (voir la référence [3] pour une description plus détaillée).…”

Section: Dispositifs Tout Optiques Ultrarapidesunclassified

Effets non linéaires en optique guidée

Vitrant

1998

l'Optique Non Linéaire Et Ses Matériaux

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Résumé : Les non-linéarités sont largement présentes dans le monde qui nous entoure et font l'objet d'études de plus en plus approfondies. Malgré des non-linéarités très faibles, l'optique n'est pas en reste et a permis de mettre en évidence et d'exploiter des manifestations spectaculaires, mélanges de fréquences, effets paramétriques, etc. C'est l'avènement des lasers qui a permis la découverte des nonlinéarités optiques de volume, grâce à une augmentation des puissances optiques disponibles. Quant à elle, l'optique guidée a récemment permis d'ouvrir de nouveaux horizons à l'optique non linéaire, cette fois-ci en permettant de réaliser un rêve, celui de propager la lumière sur de grandes longueurs en s'affranchissant de la diffraction et de renforcer les effets non linéaires par accumulation. Toutefois ce domaine des effets non linéaires en optique guidée n'est sans doute encore qu'émergent, ainsi qu'en atteste la proportion élevée d'articles théoriques. De nombreuses réalisations expérimentales attractives demeurent irréalisables à cause d'exigences technologiques difficiles à atteindre. Le but du cours est de donner au lecteur un aperçu des résultats marquants des quinze dernières années et des tendances actuelles, en se limitant aux non-linéarités cubiques. Le choix a été fait d'aborder la plupart des aspects en privilégiant une description qualitative des phénomènes et une analyse intuitive des concepts, nécessairement incomplète, et de renvoyer le lecteur à des références pour plus de détails. La propagation en régime soliton, les non-linéarités dans les fibres, les dispositifs pour le traitement tout optique du signal, les effets spatiaux et dynamiques dans les coupleurs distribués, la spectroscopic des lignes noires figurent parmi les thèmes abordés.

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Section: Dispositifs Tout Optiques Ultrarapidesunclassified

Effets non linéaires en optique guidée

Vitrant

1998

l'Optique Non Linéaire Et Ses Matériaux

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“…Integration of the photonic components raises several key problems linked with miniaturisation, such as the protection from the parasite reflections, potentially solved by the recently emerged topological photonics 10,11 . But one of the main problems has been linked with the high powers required for optical switching via the Kerr nonlinearity or other mechanisms used in nonlinear optics [12][13][14] . One option to solve this issue can be to reduce the size of the non-linear cavities, such as it is done for nano-lasers 15 .…”

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confidence: 99%

High-frequency exciton-polariton clock generator

2020

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Integrated circuits of photonic components are the goal of applied polaritonics. Here, we propose a compact clock generator based on an exciton-polariton micropillar, providing optical signal with modulation frequency up to 100 GHz. This generator can be used for driving polariton devices. The clock frequency can be controlled by the driving laser frequency. The device also features low power consumption (1 pJ/pulse).Optical computing is an important long-standing goal in the field of photonics 1,2 . Different approaches were used in the field during the last 70 years, including analog optical computing 3,4 , combined electro-optical circuits 5 , photonic neural networks 6 , and digital optical computing 7-9 . Integration of the photonic components raises several key problems linked with miniaturisation, such as the protection from the parasite reflections, potentially solved by the recently emerged topological photonics 10,11 . But one of the main problems has been linked with the high powers required for optical switching via the Kerr nonlinearity or other mechanisms used in nonlinear optics [12][13][14] . One option to solve this issue can be to reduce the size of the non-linear cavities, such as it is done for nano-lasers 15 . Another option is to enhance nonlinearities using the strong light-matter coupling 16,17 which allows to use the significant interactions between the matter part of the eigenmodes 18-20 .Cavity exciton-polaritons 17 (polaritons) are a good example of such promising platform showing an increase by a factor of 10 4 with respect to the ordinary Kerr nonlinearity in standard inorganic semiconductors 20,21 as well as in 2D monolayer materials 22,23 and perovskites 24 . Thanks to these properties, many non-linear polariton devices have already been proposed and implemented [25][26][27][28][29] . Such devices exhibit low operation powers and fast switching times. They can be assembled into logical circuits capable of functioning at very high operating frequencies. However, in order to be correctly tested and to be ultimately useful, these circuits have to be driven not by an external pulsed (or even cw) laser, as it is typically the case in experiments, but by an integrated "clock generator" able to provide the expected operation frequency.In electronics, the clock generators always contain a nonlinear element (such as an inverter), which is often combined with a resonant element (such as a quartz crystal) for frequency stability. The most well-known example is the Pierce oscillator 30 . In general, the non-linear circuits used for generating oscillations date back to the beginning of the XX century 31 and are called multivibrators. They are often based on bistable nonlinear elements exhibiting two possible stationary outputs for a given single input. Biasing the bistable element makes impossible for it to remain in these stationary states, and thus the element is constantly switching between a) Electronic mail: dmitry.solnyshkov@uca.fr the two at a well defined rate. It is therefore logical t...

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“…Since the original observation in sodium vapor, the phenomenon of optical bistability (OB) has been reported in many systems . In essence, a bistable system holds two stable states (outputs), which can be controlled by an external drive (input) with input–output characteristics exhibiting a hysteresis .…”

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confidence: 99%

“…S ince the original observation in sodium vapor, 1 the phenomenon of optical bistability (OB) has been reported in many systems. 2 In essence, a bistable system holds two stable states (outputs), which can be controlled by an external drive (input) with input−output characteristics exhibiting a hysteresis. 3 After the demonstration of OB in semiconductor systems (e.g., GaAs 4 ), it was immediately recognized that OB has great potential for all-optical computing, 5 where bistable systems can be used as memories, switches, amplifiers and logic elements.…”

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confidence: 99%

Acoustically Triggered Optical Memories

2020

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Hysteretic behavior of the photon emission by microcavity exciton-polaritons (MPs), optical bistability, provides the foundation for photonic memories, switches, and optical logic. Here, we demonstrate the control of bistable transitions in MPs confined in μm-sized intracavity traps by electrically generated single acoustic pulses. The studies were performed in arrays of confined MPs placed in an acoustic resonator and optically pumped in resonance below the condensation threshold. A short (μs-long) strain pulse applied to the MPs triggers the bistable transition from the subthreshold, low emission initial state to an optical parametric oscillator (OPO) condensate with high optical emission. Time-resolved studies reveal that the transition occurs during the buildup of the acoustic field in the resonator via a strain-induced reduction of the threshold for the OPO excitation. The MPs then remain in the final state for as long as the optical pump is supplied, demonstrating the bistability as well as memory retention. The robustness of the triggering approach is shown by the synchronous switching of arrays of confined MPs by a single acoustic pulse, thus, establishing the applicability of the concept for scalable on-chip optical memories in emerging applications such as classical and quantum polariton simulators.

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Optical bistability

Cited by 21 publications

References 110 publications

Effets non linéaires en optique guidée

Effets non linéaires en optique guidée

High-frequency exciton-polariton clock generator

Acoustically Triggered Optical Memories

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