Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals

Galfsky, Tal; Sun, Zheng; Considine, Christopher R.; Chou, Cheng-Tse; Ko, Wei-Chun; Lee, Yi-Hsien; Narimanov, Evgenii E.; Menon, Vinod M.

doi:10.1021/acs.nanolett.6b01558

Cited by 98 publications

(80 citation statements)

References 28 publications

(41 reference statements)

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“…Several experiments have successfully demonstrated the spontaneous emission modification and related applications using HMMs . For example, Figure a depicts the dependent relation of the CdSe/ZnS quantum dot lifetime dispersed on the metal–dielectric multilayer structures to emitting wavelength.…”

Section: D Bulk Hyperbolic Metamaterialsmentioning

confidence: 99%

“…Compared with other optical metamaterials, like chiral and split ring resonator–based metamaterials, HMMs have advantages of relative ease of fabrication at optical frequencies, broadband nonresonant and 3D bulk responses, and flexible wavelength tunability. As a result, HMMs have attracted widespread interest and become a good multifunctional platform for many exotic applications, such as optical negative refraction and light beam steering, subdiffraction‐limited imaging and nanolithography, spontaneous and thermal emission engineering, ultrasensitive optical, biological, and chemical sensing, omnidirectional and broadband optical absorption …”

Section: Introductionmentioning

confidence: 99%

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Hyperbolic Metamaterials and Metasurfaces: Fundamentals and Applications

Huo

Zhang

Liang

et al. 2019

Advanced Optical Materials

167

107

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and their potential applications in various fields, including optical waveguiding, imaging, ultrasensitive optical sensing, and electromagnetic cloaking.Among the different types of optical metamaterials proposed and demonstrated to date, there is one class of highly anisotropic metamaterials which exhibit hyperbolic (or indefinite) dispersions, depending on their effective electric tensors (here, we only consider nonmagnetic media with unit magnetic tensors). Such hyperbolic metamaterials (HMMs) have reached the ultra-anisotropic limit of traditional uniaxial crystal and lead to dramatic changes for the light propagation behaviors. [12][13][14][15][16] Compared with other optical metamaterials, like chiral [17,18] and split ring resonator-based metamaterials, [19,20] HMMs have advantages of relative ease of fabrication at optical frequencies, broadband nonresonant and 3D bulk responses, and flexible wavelength tunability. As a result, HMMs have attracted widespread interest and become a good multifunctional platform for many exotic applications, such as optical negative refraction and light beam steering, [12,[21][22][23][24][25][26][27][28] subdiffraction-limited imaging and nanolithography, [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] spontaneous and thermal emission engineering, [71][72][73][74][75][76][77][78][79][80] ultrasensitive optical, biological, and chemical sensing, [81][82][83][84][85][86][87][88][89] omnidirectional and broadband optical absorption. [90][91][92][93] On the other hand, ultrathin metasurfaces, which comprise a class of planar optical metamaterials with many subwavelength structural units, have attracted much attention due to their ability of locally controlling the phase, amplitude, and polarization of light at the interface between two natural materials. [94][95][96][97] 2D planar metasurfaces have many advantages over bulk metamaterials, including simplifying the fabrication and integration process, reducing energy loss, and being compatible with other photonics devices. In this context, as an efficient surface wave modulation platform, hyperbolic metasurfaces (HMSs) with in-plane hyperbolic dispersions have a potential influence on the development of on-chip planar photonic devices. [95,98] In this review, we first discuss the dispersions and realizations of hyperbolic media. Then, we review the recent achievements of various optical applications based on 3D bulk HMMs and 2D planar HMSs. It should be stressed that, although some application scenarios for 3D HMMs and 2D HMSs are analogous, in fact they are not equal to each other because additional constrains will be introduced on the surface wave as the dimensionality degraded, which is accompanied by fancy in-plane Recent advances in nanofabrication and characterization technologies have spurred many breakthroughs in the field of optical metamaterials and metasurfaces that provide novel ways of manipulating light interaction in a well controllable manner. Among these artificial nanostructured materials, ...

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Section: D Bulk Hyperbolic Metamaterialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hyperbolic Metamaterials and Metasurfaces: Fundamentals and Applications

Huo

Zhang

Liang

et al. 2019

Advanced Optical Materials

167

107

View full text Add to dashboard Cite

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“…It is noteworthy that the hyperbolic medium can either be a natural material with hyperbolic dispersion, such as bismuth [32], or an artificial one, i.e., HMM [31]. The photonic hypercrystals have also perceptible potential applications, such as guiding [31] and the broadband enhancement of spontaneous emission [33]. Moreover, the multilayered structure of the graphene-hBN subwavelength stack can also be considered as a hypercrystal, as far as the effective medium theory (EMT) does not break down.…”

Section: Introductionmentioning

confidence: 99%

Hybrid plasmon–phonon polariton bands in graphene–hexagonal boron nitride metamaterials [Invited]

et al. 2017

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We theoretically investigate mid-infrared electromagnetic wave propagation in multilayered graphene-hexagonal boron nitride (hBN) metamaterials. Hexagonal boron nitride is a natural hyperbolic material that supports highly dispersive phonon polariton modes in two Reststrahlen bands with different types of hyperbolicity. Due to the hybridization of surface plasmon polaritons of graphene and hyperbolic phonon polaritons of hBN, each isolated unit cell of the graphene-hBN metamaterial supports hybrid plasmon-phonon polaritons (HPPs). Through the investigation of band structure of the metamaterial we find that, due to the coupling between the HPPs supported by each unit cell, the graphene-hBN metamaterial can support HPP bands. The dispersion of these bands can be noticeably modified for different thicknesses of hBN layers, leading to the appearance of bands with considerably flat dispersions. Moreover, analysis of light transmission through the metamaterial reveals that this system is capable of supporting high-k propagating HPPs. This characteristic makes graphene-hBN metamaterials very promising candidates for the modification of the spontaneous emission of a quantum emitter, hyperlensing, negative refraction, and waveguiding.

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“…et al . manuscript submitted), spontaneous emission engineering1617182930 and ultrafast switching20. In addition, the large momentum of BPPs has found use in asymmetric transmission devices31 and in HMM-clad waveguides with highly tailorable modal dispersion32333435.…”

mentioning

confidence: 99%

“…For example, one-dimensional rectilinear gratings16 and so-called hyper-crystal29 gratings made by focused ion beam were used to show emission enhancement of organic dyes and 2D transition metal dichalcogenides, respectively. In addition, nanohole array gratings17 and bullseye18 gratings made by electron-beam lithography (EBL) and dry etching were used with dyes and quantum dots, respectively.…”

mentioning

confidence: 99%

Luminescent hyperbolic metasurfaces

et al. 2017

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When engineered on scales much smaller than the operating wavelength, metal-semiconductor nanostructures exhibit properties unobtainable in nature. Namely, a uniaxial optical metamaterial described by a hyperbolic dispersion relation can simultaneously behave as a reflective metal and an absorptive or emissive semiconductor for electromagnetic waves with orthogonal linear polarization states. Using an unconventional multilayer architecture, we demonstrate luminescent hyperbolic metasurfaces, wherein distributed semiconducting quantum wells display extreme absorption and emission polarization anisotropy. Through normally incident micro-photoluminescence measurements, we observe absorption anisotropies greater than a factor of 10 and degree-of-linear polarization of emission >0.9. We observe the modification of emission spectra and, by incorporating wavelength-scale gratings, show a controlled reduction of polarization anisotropy. We verify hyperbolic dispersion with numerical simulations that model the metasurface as a composite nanoscale structure and according to the effective medium approximation. Finally, we experimentally demonstrate >350% emission intensity enhancement relative to the bare semiconducting quantum wells.

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Broadband Enhancement of Spontaneous Emission in Two-Dimensional Semiconductors Using Photonic Hypercrystals

Cited by 98 publications

References 28 publications

Hyperbolic Metamaterials and Metasurfaces: Fundamentals and Applications

Hyperbolic Metamaterials and Metasurfaces: Fundamentals and Applications

Hybrid plasmon–phonon polariton bands in graphene–hexagonal boron nitride metamaterials [Invited]

Luminescent hyperbolic metasurfaces

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