The Focusing and Talbot Effect of Periodic Arrays of Metallic Nanoapertures in High-Index Medium

Yu, Yiting; Chassaing, D.; Scherer, Torsten; Landenberger, Benjamin; Zappe, Hans

doi:10.1007/s11468-012-9463-0

Cited by 15 publications

(13 citation statements)

References 49 publications

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“…They found that a larger ratio of the period to wavelength makes the Talbot effect more pronounced. The same viewpoint was verified in our recent report25, and furthermore, the influences of structural parameters, including the fill factor, array size, lattice distribution, and nanoaperture shapes on the focusing and Talbot effects of the finite-sized 2D periodic metallic nanoaperture arrays were also experimentally investigated26, from which we know that a larger array size shows no obvious influence on the average size of hotspots in the Talbot carpets, and the different nanoaperture shapes exhibit no big difference in the Talbot fields.…”

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confidence: 88%

Investigation on the plasmon Talbot effect of finite-sized periodic arrays of metallic nanoapertures

Gao

et al. 2017

Sci Rep

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We present an in-depth and systematical investigation on the plasmon Talbot effect of finite-sized two-dimensional (2D) periodic metallic nanoaperture arrays. The nanoaperture shapes, fill factor, lattice distribution, array size, film thickness, material property and polarization state of the incident light are considered, and the inherent influencing rules are summarized via the three-dimensional (3D) finite-difference time-domain (FDTD) numerical simulations. The nanoaperture shapes, fill factor or array size seems to express a tiny influence on Talbot effect, which shows a good agreement with our previously reported experimental results. Besides, square lattice brings out a much more uniform Talbot pattern than the triangular distribution, and the smaller array period should be taken to estimate the Talbot distance when it comes to a rectangular distribution. Furthermore, the thickness of Au film is suggested to within the range of 50~100 nm, which gives a broadest Talbot contour. It is also found out that the elliptical shape of hotspots is closely related to the linearly polarization state of the light source, showing an asymmetric electromagnetic field. The research contributes to a better understanding of the optical transmission features through periodic metallic nanoaperture arrays, which provides opportunities for the potential applications such as nanofabrication, optoelectronics, and imaging.

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confidence: 88%

Investigation on the plasmon Talbot effect of finite-sized periodic arrays of metallic nanoapertures

Gao

et al. 2017

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“…It explains well the unsuccess for Odom et al to observe the Talbot effect when their "patches" of nanoholes were illuminated. Our previous work further pointed out that the effective wavelength should be employed to produce the Talbot effect [5].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the lensing and Talbot effects of finite-sized 2D periodic metallic nanoaperture arrays

Zappe

Zhang

2016

SPIE Proceedings

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This paper presents the preliminary experimental studies of the influences of structural parameters, including the fill factor, device size, lattice, and nanoaperture shape, on the far-field optical transmission properties through the finite-sized two-dimensional periodic arrays of metallic nanoapertures. Both the lensing effect and the Talbot effect are observed, characterized and analyzed. Light intensity patterns of Talbot revivals at various Talbot distances containing abundant subwavelength hotspots are obtained, and the average size of the hotspots are derived and compared. Some concluding remarks are given to provide an important technological reference for the design and application of such devices according to the current experimental results.

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“…However, although the wavelength (525 nm) is larger than the array period (500 nm) in our research, the water is utilized as the output medium instead of air like that in Ref. [20], which results in an effective wavelength of ~395 nm and the ultimate occurrence of the plasmon Talbot revivals. As a consequence, by utilizing a high-index optical medium (refractive index n), the operating wavelength to achieve the Talbot effect can be broadened, increased by a factor of n-1 theoretically.…”

Section: Resultsmentioning

confidence: 98%

“…To the best of our knowledge, experimental results of 3D plasmon Talbot effect have not yet been reported. In our previous research [20], we reported the preliminary experimental results of 3D plasmon Talbot effect of three periodical arrays composed of different nanoapertures, say nanowaves, nanoholes and nanodots. Here, a further experimental investigation is presented concerning three new samples.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of 3D plasmon talbot effect

Zappe

2014

The 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)

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Three-dimensional (3D) plasmon Talbot effect is experimentally investigated on three finite-sized, two-dimensional (2D) periodical arrays composed of subwavelength nanoholes with different fill factors. By using water as the output medium, both the focusing behavior and the plasmon Talbot revivals are clearly observed even when the operating wavelength is larger than the array period. And theoretically, with the output material having a refractive index of n, the operating wavelength to realize the plasmon Talbot effect can be enlarged by a factor of n-1. The integral and fractional plasmon Talbot revivals reproduce the device pattern with rich subwavelength hotspots (0.56~0.72λ) in exactly the same array period, which shows a great prospect for the low-cost, large-scale micro-and nanolithography. The preliminary experimental results indicate that the fill factor doesn't play an obvious influence on the size of the achieved plasmon Talbot hotspots.

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The Focusing and Talbot Effect of Periodic Arrays of Metallic Nanoapertures in High-Index Medium

Cited by 15 publications

References 49 publications

Investigation on the plasmon Talbot effect of finite-sized periodic arrays of metallic nanoapertures

Investigation on the plasmon Talbot effect of finite-sized periodic arrays of metallic nanoapertures

Experimental investigation on the lensing and Talbot effects of finite-sized 2D periodic metallic nanoaperture arrays

Experimental investigation of 3D plasmon talbot effect

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