Light-controlled perfect absorption of light

Reddy, K. Nireekshan; Gupta, S. Dutta

doi:10.1364/ol.38.005252

Cited by 25 publications

(6 citation statements)

References 26 publications

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“…We have treated equation (3) in the linearized approximation which so far has been quite common. Consequences of going beyond linear approximation have started being examined [4,16]. Drawing on the findings of the [16] we expect that the nonlinearities can be used to tune the position where the IEIT occurs.…”

Section: Modelmentioning

confidence: 99%

Nanomechanical inverse electromagnetically induced transparency and confinement of light in normal modes

Agarwal

Huang

2014

New J. Phys.

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We demonstrate the existence of the phenomenon of the inverse electromagnetically induced transparency (IEIT) in an opto mechanical system consisting of a nanomechanical mirror placed in an optical cavity. We show that two weak counter-propagating identical classical probe fields can be completely absorbed by the system in the presence of a strong coupling field so that the output probe fields are zero. The light is completely confined inside the cavity and the energy of the incoming probe fields is shared between the cavity field and creation of a coherent phonon and resides primarily in one of the polariton modes. The energy can be extracted by a perturbation of the external fields or by suddenly changing the Q of the cavity.

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Section: Modelmentioning

confidence: 99%

Nanomechanical inverse electromagnetically induced transparency and confinement of light in normal modes

Agarwal

Huang

2014

New J. Phys.

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“…Since the visible absorption of water and organic solvents is very weak and difficult to measure by ordinary methods [23], there may be demand for this method, especially for ionic liquids for which it is difficult to prepare large quantities of samples [24]. Furthermore, it can be applied to experiments of nonlinear CPA by the Kerr nonlinearity [25] or by two-photon absorption [26] of polymers, liquids, or suitable dye molecules/nanoparticles dispersed in them using pulsed laser light, as well as to the photothermal imaging of transparent samples with nearly no absorption, which is a disadvantage of photothermal microscopy [27,28], where super-resolution images can be observed as long as the sample has absorption without the need for fluorescent labeling.…”

Section: Conclusion and Prospectmentioning

confidence: 99%

Coherent Perfect Absorption in a Transparent Polymer Film on a Transparent Substrate Utilizing Total Internal Reflection by Grazing Incidence

Hasegawa

Seto

et al. 2022

Applied Sciences

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A simple scheme for single-channel coherent perfect absorption (CPA) of transparent materials is proposed and experimentally realized using total internal reflection by grazing incidence, with a single dielectric layer sandwiched by semi-infinite dielectric layers. In a 1.48-µm thick polyvinylpyrrolidone (PVP) film, dip-coated on a MgF2 substrate both transparent in the visible, reflectance dips due to nearly 90% absorption by single-channel CPA were observed in the wavelength range of 370–800 nm, with white light from a Xe lamp incident on the side face of the substrate and extracted from the other side through multiple reflections in the PVP layer. This is a simple and inexpensive CPA scheme, and it is expected to have various applications by changing the substrate/polymer material or dispersing molecules in the polymer film. This paper also provides a design guideline for grazing-incidence waveguide-mode sensors using transparent dielectric materials.

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“…The miniscule nature of the quantity being measured makes it imperative to search for a means of enhancing this quantity. A recent study has shown that it is possible to exploit coherent perfect absorption [20,21,22,23] mediated mode enhancement in a gap plasmon structure in order to enhance transverse spin [24]. In another study the localized plasmons and the Mie resonances were shown to be effective tools to enhance the transverse spin [25].…”

Section: Introductionmentioning

confidence: 99%

Rapid communication: Transverse spin with coupled plasmons

2017

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We study theoretically the transverse spin associated with the eigenmodes of a thin metal film embedded in a dielectric. We show that the transverse spin has a direct dependence on the nature and strength of the coupling leading to two distinct branches for the longand short-range modes. We show that the short-range mode exhibits larger extraordinary spin because of its more 'structured' nature due to higher decay in propagation. In contrast to some of the earlier studies, calculations are performed retaining the full lossy character of the metal. In the limit of vanishing losses we present analytical results for the extraordinary spin for both the coupled modes. The results can have direct implications for enhancing the elusive transverse spin exploiting the coupled plasmon structures.

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Light-controlled perfect absorption of light

Cited by 25 publications

References 26 publications

Nanomechanical inverse electromagnetically induced transparency and confinement of light in normal modes

Nanomechanical inverse electromagnetically induced transparency and confinement of light in normal modes

Coherent Perfect Absorption in a Transparent Polymer Film on a Transparent Substrate Utilizing Total Internal Reflection by Grazing Incidence

Rapid communication: Transverse spin with coupled plasmons

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