Defect modes in a one-dimensional photonic crystal with a chiral defect layer

Lee, Kwang Jin; Wu, Jiaju; Kim, Kihong

doi:10.1364/ome.4.002542

Cited by 33 publications

(10 citation statements)

References 25 publications

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“…The optical properties of the resulting samples were then characterized experimentally by a combination of steady state and time‐resolved fluorescence spectroscopies. The results were analyzed with a theoretical approach relying on the combination of the invariant imbedding method and the finite‐difference time‐domain (FDTD) method . With these tools, we calculated the spontaneous emission rate and the Purcell factor as a function of the distance between the dye‐polymer film and the top metal layer of the HMM substrates.…”

Section: Resultsmentioning

confidence: 99%

“…As detailed in the Supporting Information, in order to obtain the exact values of r s and r p of the HMM structures, we employed the invariant imbedding method for the electromagnetic wave propagation in the HMM structures. The equations of the reflection coefficients r s and r p are obtained and integrated for each thickness of the HMM top dielectric layer . With this approach, any dipole orientation, defined as γ, is considered as a linear combination of parallel and perpendicular dipole components.…”

Section: Resultsmentioning

confidence: 99%

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Hyperbolic Dispersion Dominant Regime Identified through Spontaneous Emission Variations near Metamaterial Interfaces

Lee

André

2018

Adv Materials Inter

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optoelectronic devices, [6][7][8] chirality, [9,10] magnetism, [11][12][13] and surface-enhanced Raman spectroscopy. [14][15][16] Controlling the structure of an environment is known to impact on photophysical properties of semiconductors. The effects can be revealed through alterations of energy and charge transfers, [17][18][19] spectral shifts and amplitude variation of both absorption and transmission, [20][21][22][23] as well as polarization, [24] and emission amplitude. [25][26][27][28] In this context, engineering spontaneous emission rate with elaborated nanostructures is of particular interest and the effect of various structures has been explored including confinement, [28][29][30] plain metal films and metal

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hyperbolic Dispersion Dominant Regime Identified through Spontaneous Emission Variations near Metamaterial Interfaces

Lee

André

2018

Adv Materials Inter

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“…To explore standing-wave contributions, we calculated the optical-field-intensity distribution, | F | 2 , i.e., the light intensity, in the Donor:Acceptor films and the composite nanostructures using invariant imbedding method 29 , 57 , 58 and optical constants measured by ellipsometry. Figure 3a–c present | F | 2 as a function of the wavelength for three substrates.…”

Section: Resultsmentioning

confidence: 99%

Optical-field driven charge-transfer modulations near composite nanostructures

et al. 2020

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Optical activation of material properties illustrates the potentials held by tuning light-matter interactions with impacts ranging from basic science to technological applications. Here, we demonstrate for the first time that composite nanostructures providing nonlocal environments can be engineered to optically trigger photoinduced charge-transfer-dynamic modulations in the solid state. The nanostructures explored herein lead to out-of-phase behavior between charge separation and recombination dynamics, along with linear charge-transfer-dynamic variations with the optical-field intensity. Using transient absorption spectroscopy, up to 270% increase in charge separation rate is obtained in organic semiconductor thin films. We provide evidence that composite nanostructures allow for surface photovoltages to be created, which kinetics vary with the composite architecture and last beyond optical pulse temporal characteristics. Furthermore, by generalizing Marcus theory framework, we explain why charge-transfer-dynamic modulations can only be unveiled when optic-field effects are enhanced by nonlocal image-dipole interactions. Our demonstration, that composite nanostructures can be designed to take advantage of optical fields for tuneable charge-transfer-dynamic remote actuators, opens the path for their use in practical applications ranging from photochemistry to optoelectronics.

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“…Also, there are a large number of papers devoted to this phenomenon where the frequency of this defect mode is adjusted by applying static magnetic field [11,12]. In addition, the combination of periodic band gap structures with such type of structures as graphene or chiral elements has been considered extensively [10,13].…”

Section: Introductionmentioning

confidence: 99%

Defect Mode Tuning in Two-Dimensional Band-Gap Wire Structure in the Millimeter Waveband

Ivzhenko¹,

Odarenko²,

Yudina³

et al. 2019

PIER M

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A two-dimensional (2D) band-gap wire structure with a spatial defect has been fabricated and studied in order to demonstrate which way the violation of periodicity affects its spectral properties. We experimentally demonstrate and numerically verify the occurrence of defect modes revealed as localized resonant peak inside the band gap transmission spectrum of 2D band-gap wire structure. We also demonstrate the efficient frequency tunability of these defect mode peaks by varying defect size in the frequency range 22-40 GHz. The visualization and analysis of spatial electromagnetic (EM) field distribution within the defect of 2D band-gap wire structure is performed both experimentally and numerically. A good agreement between the experiment and numerical simulation is demonstrated.

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Defect modes in a one-dimensional photonic crystal with a chiral defect layer

Cited by 33 publications

References 25 publications

Hyperbolic Dispersion Dominant Regime Identified through Spontaneous Emission Variations near Metamaterial Interfaces

Hyperbolic Dispersion Dominant Regime Identified through Spontaneous Emission Variations near Metamaterial Interfaces

Optical-field driven charge-transfer modulations near composite nanostructures

Defect Mode Tuning in Two-Dimensional Band-Gap Wire Structure in the Millimeter Waveband

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