Optical bistability in plasmonic nanoparticles: Effect of size, shape and embedding medium

Daneshfar, Nader; Foroughi, Hamidreza

doi:10.1016/j.physe.2016.04.034

Cited by 20 publications

(2 citation statements)

References 19 publications

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“…In nonlinear optical systems, optical bistability occurs when a feedback mechanism produces two distinct output stable states for a single input field. Optical bistability has been studied both experimentally and theoretically in many optical systems like superconducting quantum circuits [25], plasmonic nanoparticles [26], quantum dots [27][28][29], quantum wells [30,31], and Kerr nonlinear systems [32,33]. Optical bistability, which is a nonlinear phenomenon characterized by mean photon number, has potential applications in optical switches [34], all-optical devices [35], and logic gates [36].…”

Section: Introductionmentioning

confidence: 99%

Optical response properties and bipartite entanglement in a hybrid optomechanical system assisted by Kerr-nonlinearity and amplitude modulated drive field

Yadav,

Bhatt,

Bhattacherjee

et al. 2024

J. Opt.

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We theoretically investigate the optomechanical interaction between an optical ﬁeld and a mechanical mode mediated by a Kerr nonlinear medium inside an optical cavity and simultaneously driven by an external amplitude-modulated pump ﬁeld and a probe ﬁeld. We show that switching between bistability and multistability is inﬂuenced by the rocking parameter and Kerr nonlinearity. Further, we study the quantum ﬂuctuation dynamics of the system, which shows the quantum coherence and interference eﬀects resulting in the transmission of the probe ﬁeld from opacity to ampliﬁcation. We also ﬁnd that the rocking parameter, Kerr nonlinearity, and the optomechanical coupling inﬂuence the transmission spectrum. In addition, we also show that the rocking parameter signiﬁcantly enhances the optomechanical coupling, which can be a new handle to control the entanglement between the optical and mechanical modes. The results show that such a hybrid optomechanical system has potential application in designing and optimizing all-optical switching and optical sensors.

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Section: Introductionmentioning

confidence: 99%

Optical response properties and bipartite entanglement in a hybrid optomechanical system assisted by Kerr-nonlinearity and amplitude modulated drive field

Yadav,

Bhatt,

Bhattacherjee

et al. 2024

J. Opt.

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“…This implies that, depending on whether an optical property is caused by the intrinsic properties of the optical device or by external feedback, it may have two different values at high incidence intensities. 3 Furthermore, the observed bistability effects may be caused by a significant enhancement of the electric field within the particles, which can be brought about by a suitable ratio of the host to particle dielectric permittivity, modification of the field within a particular particle by its environment, and surface plasmon resonance. 4,5 Hence, it is desirable to investigate and comprehend the optical bistable properties of nanoscale optical devices before designing them for real-world applications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of optical bistability in spheroidal core–shell nanocomposites with passive and active dielectric cores

Hirpha,

Bergaga,

Ali

et al. 2024

AIP Advances

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We investigated how induced optical bistability (IOB) and bistability domain (BD) of spheroidal core–shell nanocomposites (NCs) are affected by the depolarization factor (L), metal fraction (p), and host matrix (ɛh). The NCs are composed of passive and active dielectric cores coated with a metallic shell and embedded in various host matrices. By employing Laplace’s equation and the Drude–Lorentz model, we calculated the electric field enhancement in various regions of the NCs and studied their IOB theoretically and numerically. The BD of the same NCs is investigated using the root analysis approach. The study reveals that when the value of L decreases, the bistable region of OB increases. However, when p increases at constant L and ɛh, the bistable region gets wider. When the value of ɛh increases, the IOB region is achieved at larger values of incident field. Moreover, the IOB produced was narrower in the passive dielectric core than in the active one, showing that the type of core material also influences the IOB of the core–shell NCs. When the value of L changes, the region of BD also changes in both types of cores. Similarly, changing the value of p in both types of cores causes the BD to vanish or emerge. Moreover, varying ɛh, BD is produced in the OB regions. Overall, the IOB and BD in each core are sensitive to changes in L, p, and ɛh. Varying these parameters leads to the possibility of tuning the bistable regions, which can be used in optical circuits, logic operations, and optical memory.

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Problems in Electrostatic Approximation

Moradi

2020

Springer Series in Optical Sciences

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Optical bistability in plasmonic nanoparticles: Effect of size, shape and embedding medium

Cited by 20 publications

References 19 publications

Optical response properties and bipartite entanglement in a hybrid optomechanical system assisted by Kerr-nonlinearity and amplitude modulated drive field

Optical response properties and bipartite entanglement in a hybrid optomechanical system assisted by Kerr-nonlinearity and amplitude modulated drive field

Investigation of optical bistability in spheroidal core–shell nanocomposites with passive and active dielectric cores

Problems in Electrostatic Approximation

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