NONLINSUPFOC · Nonlinear super focusing in plasmonic systems
7РП — „Хора“ (Действия „Мария Кюри“)
- Период
- 2013-03-01 → 2017-02-28
- Финансиране от ЕС
- 100 000 €
- Участници
- 1
- Схема
- MC-CIG
Линиите свързват координатора с партньорите.
Накратко на български
Светлинните импулси в плазмонични системи се анализират чрез управление на тяхната скорост, включително забавяне или спиране на светлината. Това помага за разбирането на фундаментални физични процеси и подобрява моделирането на поведението на металите.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Nonlinear super focusing in plasmonic systems
We developed the formulation to study extreme manipulations of weak and intense short pulses in optical waveguides such as reversed waves, slow and stopped light using nonlinear optics. We completed the study of reversed waves, but the study of pulse propagation in the slow and stopped light regime proved to be much more complicated, so that we are only in initial stages of the implementation of the derived formulation. We also studied the analogue particle (nano-antennae) geometry. For the first time, we employed the technique of transformation optics to nonlinear optical media. The complexity of the problem required us several steps of simplification, as well as adoption of advanced semi-analytical techniques. Preliminary results indicate on some new physical insights, quite general and fundamental to the problem. In addition, we found that the standard numerical software in use in the community fail to model the relevant physical scenarios. Thus, as a preliminary step, we developed a simple solution to this problem that can rely on the existing software settings. We are now ready to finish the study of the physical aspects of the problem. Finally, we performed a detailed study of the slow nonlinearity of metals, specifically, based on the thermal response. The study of all these topics will be pursued in the future by my research group.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
I propose a theoretical study of the effects of a self-focusing nonlinearity in plasmonic nano-structures.First, I will exploit the field enhancements in tapered plasmonic waveguides in order to implement strong nonlinear modifications of the plasmon wavelength and group velocity. I would like to achieve slow light, and if possible, even stopped and reversed light.Second, I will study nonlinear focusing in plasmonic waveguides, an effect which unlike soliton formation, was not studied in the context of plasmonics before. Nonlinear focusing, also known as beam collapse, corresponds to focusing of macroscopic beams down to the diffraction limit, but not beyond it. Thus, it is of fundamental interest to study this effect in plasmonic systems that do allow beams of subwavelength sizes in order to unveil the maximal focusing level achievable. Furthermore, I will study the analogy between the geometrical focusing imposed by the tapering and the nonlinear focusing imposed by the self-focusing nonlinearity.Third, I will exploit the link between plasmonic waveguides and metal nano-particle pairs, as established by transformation optics techniques, to study the effect of a self-focusing nonlinearity on the super-focusing effect in the nano-particle pair geometry. This will be done by extending the linear theory of transformation methods to nonlinear media.The proposed research aims at the realization of novel and stronger than ever nonlinear effects in the tapered waveguides, at the realization of diffraction-unlimited nonlinear focusing, and the realization of nonlinear effects at ultimately small volumes in the nano-particle geometries. As such, the research aims at bridging the gap between the plasmonics and nonlinear optics communities, thus stimulating further studies of nonlinear plasmonic systems. In addition, the research may lead to the development of techniques such as nonlinear transformation-optics whose relevance extends to many other wave systems.
Оригинален текст от CORDIS (на английски).
Участници
- BEN-GURION UNIVERSITY OF THE NEGEV · Beer ShevaКоординаторИзраел
Връзки
Данни: CORDIS, © Европейски съюз