Coupling model for an extended-range plasmonic optical transformer scanning probe

Polyakov, A. Y.; Melli, Mauro; Cantarella, Giuseppe; Schwartzberg, Adam M.; Weber‐Bargioni, Alexander; Schuck, P. James; Cabrini, Stefano

doi:10.1038/lsa.2014.76

Cited by 7 publications

(2 citation statements)

References 46 publications

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“…Silver is predominantly the preferred material for applications in extraordinary optical transmission 1 2 3 , near-field and coherent microscopy 4 5 6 7 , far-field superlensing 8 9 , single photon emission 10 and photovoltaic absorption-enhancement 2 11 12 13 . Almost invariably, simulations use Ag optical data from Palik’s 1985 handbook 14 or, more commonly, an earlier Johnson and Christy (J&C) tabulation 15 .…”

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confidence: 99%

Realistic Silver Optical Constants for Plasmonics

Jiang

Pillai

Green

2016

Sci Rep

102

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Silver remains the preferred conductor for optical and near-infrared plasmonics. Many high-profile studies focus exclusively on performance simulation in such applications. Almost invariably, these use silver optical data either from Palik’s 1985 handbook or, more frequently, an earlier Johnson and Christy (J&C) tabulation. These data are inconsistent, making it difficult to ascertain the reliability of the simulations. The inconsistency stems from challenges in measuring representative properties of pristine silver, due to tarnishing on air exposure. We demonstrate techniques, including use of silicon-nitride membranes, to access the full capabilities of multiple-angle, spectrometric-ellipsometry to generate an improved data set, representative of overlayer-protected, freshly-deposited silver films on silicon-nitride and glass.

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confidence: 99%

Realistic Silver Optical Constants for Plasmonics

Jiang

Pillai

Green

2016

Sci Rep

102

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“…Optical transformer based near-field probes, also called the “campanile”, are based on the optical transformer concept 17 that addressed most of the shortcomings of the different near-field optical probe architectures; a strong local electromagnetic field enhancement, efficient far-field to near-field coupling, nanoscale spatial resolution, background-free operation, broadband photon-plasmon coupling and access to polarization properties 18 , 19 . The campanile probe is comprised of a three-dimensional (3D) pyramidal metal-insulator-metal (MIM) geometry as shown in Fig.…”

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confidence: 99%

Campanile Near-Field Probes Fabricated by Nanoimprint Lithography on the Facet of an Optical Fiber

Calafiore

Koshelev

Darlington

et al. 2017

Sci Rep

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One of the major challenges to the widespread adoption of plasmonic and nano-optical devices in real-life applications is the difficulty to mass-fabricate nano-optical antennas in parallel and reproducible fashion, and the capability to precisely place nanoantennas into devices with nanometer-scale precision. In this study, we present a solution to this challenge using the state-of-the-art ultraviolet nanoimprint lithography (UV-NIL) to fabricate functional optical transformers onto the core of an optical fiber in a single step, mimicking the ‘campanile’ near-field probes. Imprinted probes were fabricated using a custom-built imprinter tool with co-axial alignment capability with sub <100 nm position accuracy, followed by a metallization step. Scanning electron micrographs confirm high imprint fidelity and precision with a thin residual layer to facilitate efficient optical coupling between the fiber and the imprinted optical transformer. The imprinted optical transformer probe was used in an actual NSOM measurement performing hyperspectral photoluminescence mapping of standard fluorescent beads. The calibration scans confirmed that imprinted probes enable sub-diffraction limited imaging with a spatial resolution consistent with the gap size. This novel nano-fabrication approach promises a low-cost, high-throughput, and reproducible manufacturing of advanced nano-optical devices.

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Spherical mirror testing by phase retrieval wavefront sensor

Wang

2016

Optik

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In order to verify the estimated wavefront ability of the phase retrieval wavefront sensor (PRWS), a measured spherical mirror of experiment platform was set up with the method of PRWS. PRWS technology is based on the focal plane image information wavefront solver in the focal plane wavefront measured technology, whose principle is sampling a number of the given defocus images; get the wavefront phase information by solving the optical system wavefront with Fourier optical diffractive theory and mathematics optimization. In order to validate the veracity of PRWS, both the PRWS measurement results and ZYGO interferometer measurement results were compared; experimental results demonstrate that agreement is obtained among the errors distribution, PV value and RMS value of ZYGO interferometer, so PRWS technology can effectively estimate the aberrations of spherical mirror.

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Coupling model for an extended-range plasmonic optical transformer scanning probe

Cited by 7 publications

References 46 publications

Realistic Silver Optical Constants for Plasmonics

Realistic Silver Optical Constants for Plasmonics

Campanile Near-Field Probes Fabricated by Nanoimprint Lithography on the Facet of an Optical Fiber

Spherical mirror testing by phase retrieval wavefront sensor

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