H2020Индивидуална стипендия2017–2019

OUTNANO · Out-of-equilibrium nanophotonics

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2017-10-01 → 2019-09-30
Финансиране от ЕС: 168 277 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

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Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Out-of-equilibrium nanophotonics

OUTNANO constitutes a bridge between out-of-equilibrium statistical mechanics and nanophotonics, aiming at the investigation of novel ultrafast effects in silver- and graphene-based plasmonic waveguides (PWs) and epsilon-near-zero metamaterials (ENZ MMs). The ultimate goal is to develop a new generation of low-loss photonic materials with improved efficiencies and enhanced nonlinear functionalities, including frequency conversion and lasing mechanisms, which can open new groundbreaking applications in optoelectronics, spectroscopy, biology, and medicine. This endeavour is approached by using out-of-equilibrium statistical theories for modelling the dynamics of ultrashort pulses with time duration of few femtoseconds in silver/graphene-based devices. In particular, the project focuses on PWs and ENZ MMs, which offer the best possibilities in terms of nonlinear applications owing to their extraordinary field enhancement. The main research hypothesis is that optical absorption in silver/graphene can be highly reduced by using ultrashort pulses with time duration smaller than the electron collision time. Indeed, for such short pulse durations, the probability that an electron undergoes a collision is much smaller and the transfer of optical energy to silver/graphene heating is highly reduced. Gaining access to the collisionless regime opens unprecedented possibilities for highly efficient nonlinear applications in silver/graphene-based PWs and ENZ MMs, whose main disadvantage is represented by ohmic loss. The research objectives (ROs) are: RO1. Suppression of ohmic loss in silver and graphene with ultrashort pulses in the collisionless regime; RO2. Exploitation of temporal/spatiotemporal solitons in silver/graphene-based PWs and ENZ MMs for counterbalancing chromatic-dispersion/spatial diffraction through nonlinearity: - Low-loss temporal solitons in PWs propagating for millimetres, - Low-loss spatiotemporal solitons in ENZ MMs propagating for millimetres, RO3. Enhancement of frequency conversion mechanisms in silver/graphene-based PWs and ENZ MMs: - Enhancement of harmonic generation efficiency, - Engineering of dispersive waves in the UV with high conversion efficiency, - Development of SCG at the micrometre-scale through the enhancement of self-phase modulation, self-steepening, and non-local metal nonlinearities.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

OUTNANO is about developing a new generation of nanophotonic devices by exploiting ultrafast dynamics of electrons driven out-of-equilibrium.Photonic sciences profoundly impact our society, enabling the development of high-technology devices that are currently employed in our daily life: DVD players, LEDs, laser printers, barcode scanners, displays, sensors, optical fibres, medical equipment and many others.Among the future frontiers of photonics, the achievement of ultraviolet lasers, compact white-light sources, and on-the-chip signal processing play a crucial role for several applications, e.g., all-optical computing, spectroscopy, imaging techniques, bio-sensing, cancer treatment, dental surgery, and micro-machining.Extreme exploitation of optical nonlinearities in nanophotonic components is fundamentally important in tackling these challenges, as frequency conversion mechanisms can be enhanced to generate ultraviolet radiation. Besides, optical nonlinearity enables active controlling of light by means of light, a basic requirement for developing all-optical devices. The high field enhancement provided by plasmonic materials and metamaterials is crucial for the full exploitation of nonlinear effects. Currently, the inherent high losses of these materials hamper their efficiency and their application in new-generation photonic devices.OUTNANO aims at tackling these challenges of nanophotonics by using ultrashort optical pulses with time duration of few femtoseconds, which drive the out-of-equilibrium electron plasma in the collisionless regime, where ohmic losses are suppressed. This novel regime enables the development of low-loss plasmonic circuits for on-chip all-optical computing and the engineering of highly nonlinear nanophotonic devices with enhanced efficiencies for generating UV radiation and for achieving ultra-compact white-light sources.

Оригинален текст от CORDIS (на английски).

Участници

CONSIGLIO NAZIONALE DELLE RICERCHE · RomaКоординаторИталия