Near-field imaging of Bloch surface waves on silicon nitride one-dimensional photonic crystals

Descrovi, Emiliano; Sfez, Tristan; Dominici, Lorenzo; Nakagawa, Wataru; Michelotti, Francesco; Giorgis, Fabrizio; Herzig, H. P.

doi:10.1364/oe.16.005453

Cited by 71 publications

(66 citation statements)

References 28 publications

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“…This ability has been shown to provide guiding at the surface of a terminated multilayer structure [3]. Several authors have since shown experimentally their existence [4] and characterised their properties [5,6]. Moreover, due to the confinement of the wave at the surface, their use in a sensing scheme has been predicted and demonstrated [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 98%

Detection of protein aggregation with a Bloch surface wave based sensor

Paeder

Musi

Hvozdara

et al. 2011

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 98%

Detection of protein aggregation with a Bloch surface wave based sensor

Paeder

Musi

Hvozdara

et al. 2011

Sensors and Actuators B: Chemical

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“…1,2 Although BSWs have been known for more than thirty years, they have been recently reconsidered as an alternative to surface plasmon polaritons (SPP), 3 in particular in sensing applications. [4][5][6] Until now, a number of far-field and near-field investigations have been conducted on the coupling of BSW on flat [7][8][9] and corrugated planar structures. [10][11][12] Here we demonstrate that near-infrared BSWs can be selectively prism-coupled and efficiently guided through an ultrathin polymeric ridge waveguide having thickness < λ/10 realized onto a silicon nitride multilayer.…”

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confidence: 99%

Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

et al. 2010

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We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a silicon-based multilayer can be locally coupled and guided through dielectric ridges of nanometric thickness with low propagation losses. Using a conventional prism-based configuration, we demonstrate a wavelength-selective BSW coupling inside and outside the ridge. Such a result can open interesting opportunities in surface wave-mediated sensing applications, where light could be selectively coupled in specific regions defined by nanometric reliefs.KEYWORDS Surface electromagnetic waves, near-field optical microscopy B loch surface waves (BSW) are either TE-or TMpolarized surface modes that can be sustained by truncated stacks of periodically arranged dielectric layers. 1,2 Although BSWs have been known for more than thirty years, they have been recently reconsidered as an alternative to surface plasmon polaritons (SPP), 3 in particular in sensing applications. [4][5][6] Until now, a number of far-field and near-field investigations have been conducted on the coupling of BSW on flat 7-9 and corrugated planar structures. [10][11][12] Here we demonstrate that near-infrared BSWs can be selectively prism-coupled and efficiently guided through an ultrathin polymeric ridge waveguide having thickness < λ/10 realized onto a silicon nitride multilayer. Besides being wavelength scalable and fully compatible with the actual fabrication technologies of integrated photonic and plasmonic structures, the proposed hybrid organic/inorganic structure can provide disruptive opportunities in waveguide-based biosensing schemes, (see, e.g., ref 13) in which the chemical specificity of the sensor might be implemented by functional molecule layers patterned as waveguides with nanometric thickness.In the past decade, a large number of issues connected to the guiding of electromagnetic surface waves (mostly SPP) on a subwavelength scale have been addressed by one branch of plasmonics. 14 Plasmonic waveguides according to different geometries have been proposed mainly for gaining strong (lateral) field confinement while maintaining low propagation losses in view of a high-density packing of integrated photonic circuitry. 15 In addition to guiding mechanisms based on ultrathin metallic membranes, 16 nanoparticles chains, 17,18 nanowires on dielectric substrates, 19 dielectric nanocylinders on metallic films, 20 or V-grooves in metal surfaces, 21 the most popular plasmonic waveguide configurations are constituted by metal-insulator-metal (MIM) 22,23 or insulator-metal-insulator (IMI) 24 structures. Among the latter, we recall the so-called dielectric-loaded surface plasmon polariton waveguides (DLSPPW), 25 in which a dielectric stripe is deposited onto a flat metallic film. The dielectric cladding is thick enough to confine SPP within the ridge, therefore lowering the propagation losses as well as the sensitivity upon external perturbat...

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“…6), supporting Bloch surface waves (BSWs). 36 The bilayer Au film system is composed of float glass (ε 1 = 2.31) substrate and superstrate, both of thickness 0.55 mm. The air gap between the two d m = 40 nm thick Au films is d 2 = 580 nm.…”

Section: Experimental Verification and Versatilitymentioning

confidence: 99%

Broadband wide-angle dispersion measurements: Instrumental setup, alignment, and pitfalls

Farhang

Abasahl

Dutta-Gupta

et al. 2013

Review of Scientific Instruments

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The construction, alignment, and performance of a setup for broadband wide-angle dispersion measurements, with emphasis on surface plasmon resonance (SPR) measurements, are presented in comprehensive detail. In contrast with most SPR instruments working with a monochromatic source, this setup takes advantage of a broadband/white light source and has full capability for automated angle vs. wavelength dispersion measurements for any arbitrary nanostructure array. A cylindrical prism is used rather than a triangular one in order to mitigate refraction induced effects and allow for such measurements. Although seemingly simple, this instrument requires use of many non-trivial methods in order to achieve proper alignment over all angles of incidence. Here we describe the alignment procedure for such a setup, the pitfalls introduced from the finite beam width incident onto the cylindrical prism, and deviations in the reflected/transmitted beam resulting from the finite thickness of the sample substrate. We address every one of these issues and provide experimental evidences on the success of this instrument and the alignment procedure used.

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Near-field imaging of Bloch surface waves on silicon nitride one-dimensional photonic crystals

Cited by 71 publications

References 28 publications

Detection of protein aggregation with a Bloch surface wave based sensor

Detection of protein aggregation with a Bloch surface wave based sensor

Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

Broadband wide-angle dispersion measurements: Instrumental setup, alignment, and pitfalls

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