A theoretical re-examination of giant transmission of light through a metallic nano-slit surrounded with periodic grooves

Cui, Yanxia; He, Sailing

doi:10.1364/oe.17.013995

Cited by 22 publications

(14 citation statements)

References 16 publications

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“…This is because the intensity of groove generated surface plasmon resonance in the region around the inverted π shaped metallic grooves is very strong, usually several times larger than the incident field, similar as the study in Ref. [40]. Thus the tightly trapped surface plasmon wave around the grooves are mainly determined by the geometrical parameters of the specially-shaped metallic grooves and fairly immune to the incident condition.…”

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confidence: 52%

Optical Curtain Effect: Extraordinary Optical Transmission Enhanced by Antireflection

Cui

Lin

et al. 2013

Plasmonics

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In this paper, we employ an antireflective coating which comprises of inverted π shaped metallic grooves to manipulate the behaviour of a TM-polarized plane wave transmitted through a periodic nanoslit array. At normal incidence, such scheme can not only retain the optical curtain effect in the output region, but also generate the extraordinary transmission of light through the nanoslits with the total transmission efficiency as high as 90%. Besides, we show that the spatially invariant field distribution in the output region as well as the field distribution of resonant modes around the inverted π shaped grooves can be reproduced immaculately when the system is excited by an array of point sources beneath the inverted π shaped grooves. In further, we investigate the influence of center-groove and side-corners of the inverted π shaped grooves on suppressing the reflection of light, respectively. Based on our work, it shows promising potential in applications of enhancing the extraction efficiency as well as controlling the beaming pattern of light emitting diodes.ACS numbers: 42.25. Bs, 42.25.Fx, 42.79.Ag, 73.20.Mf 2 Since the discovery of extraordinary optical transmission (EOT) in 1998 [1], metallic nano-structures have attracted significant attention because of their novel ability to excite propagating surface plasmon polariton (SPP) or localized surface plasmon modes (LSP) [2][3][4]. Usually, exotic phenomena, e.g., the well-known EOT [1,[5][6][7], Fano resonance [8,9], hot spot effect [10,11], etc., accompany with the desired metallic nano-structures. In advantage of state-of-the-art nanofabrication techniques, the metallic nano-structures are playing remarkable roles in current nano-science and have been used in many aspects including extracting more light from light emitting diodes [12,13], harvesting solar energy [14,15], improving sensitivity of biosensors [16,17], focusing light with sub-diffraction limit resolution [18][19][20] and so on.One simple sample of the metallic nano-structures is a single metallic nanoslit which can diffract light into all radial directions in cylindrical wave manner [21]. The behaviour is equivalent to a line current source, i.e., a point source in the wave propagating plane. Particularly, a non-resonant metallic nanoslit performs negligible influence on the incident field at the input opening. It can read out the signal of incident field (both amplitude and phase) at its input and accordingly transfer that signal into the output region [22]. If the nanoslit is performing on resonance, one can obtain a greatly enhanced transmission of light passing through the slit in comparison with the integrated incident energy only on the slit opening (i.e., EOT). EOT can be more efficiently produced by dressing the input surface of the metallic slit with some grooves or other resonant cavities [5,[23][24][25]. By corrugating the output surface of the slit, the uniform diffraction pattern in the output region can be tuned into some focusing or deflection profiles [23,26] as...

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confidence: 52%

Optical Curtain Effect: Extraordinary Optical Transmission Enhanced by Antireflection

Cui

Lin

et al. 2013

Plasmonics

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“…In general, the influence to transmission through the photolithographic channel surrounded with periodic grooves should come from two parts [22]-in addition to groovegenerated SPR (which is the main factor for transmission enhancement), which is also relevant to channel-generated gap surface plasmon (GSP) resonance. Going along the principle, given h 1 230 nm, w h 70 nm, and p 300 nm, the distribution of jEj 2 along the line D is enhanced successfully, which is~30 times larger than that in the structure without grooves; see Fig.…”

Section: Resultsmentioning

confidence: 99%

Function of a surface plasmon cavity for enhancing ultradeep subwavelength photolithography

Zhang

Guo

et al. 2012

J. Opt. Soc. Am. B

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A surface plasmon resonant cavity capable of enhancing ultradeep subwavelength photolithography in a large area is proposed. The cavity consists of two metal films: one is etched with periodic grooves for exciting surface plasmon resonance at the metal/dielectric interface; the other below is separated by a photoresist layer. Numerical simulations show that the properties of photolithographic patterns in the cavity can be modulated by the depth of the cavity; the physical image behind the modulation is confirmed by the phase regulation of gap surface plasmons in such a system.

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“…With respect to the bull's eye, geometrically there is a disturbance in its exit plane, i.e., a through-aperture among a set of engraved grooves, thus it requires that the excited SPs from the aperture and the grooves are approximately in-phase [8]. As a result, the distance between the slit and the nearest-grooves should be carefully designed [39]. However, in our design, as demonstrated, the nanometer-sized apertures in the bull's eye structure can be eliminated by adopting an AMM substrate.…”

Section: Demonstration Of the Amm Based Beam Collimation Effectmentioning

confidence: 99%

Beam Collimation Using an Anisotropic Metamaterial Slab Without Any Nanometer-Sized Aperture

Zhang

Cui

et al. 2015

Plasmonics

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Plasmonic beam collimation effect has been thoroughly investigated based on the well-known nanometerscale bull's eye structure formed by complex and high-cost fabrication processes. In this work, we report our effort for attaining beam collimation using an anisotropic metamaterial (AMM) slab that consists of a stack of alternating metal/dielectric layers and an integrated top metal grating. The results show that AMM slab allows creating the beam collimation effect similar to that of the bull's eye structure, an enabling technology for practical application due to its simple architecture and cost benefits. The excitation of surface plasmons at the AMM/air interface is derived. The structure of the AMM slab and its impact on beaming performance were analyzed using the effective medium theory and Finite Element Method.

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A theoretical re-examination of giant transmission of light through a metallic nano-slit surrounded with periodic grooves

Cited by 22 publications

References 16 publications

Optical Curtain Effect: Extraordinary Optical Transmission Enhanced by Antireflection

Optical Curtain Effect: Extraordinary Optical Transmission Enhanced by Antireflection

Function of a surface plasmon cavity for enhancing ultradeep subwavelength photolithography

Beam Collimation Using an Anisotropic Metamaterial Slab Without Any Nanometer-Sized Aperture

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