Publications by Hans Peter Herzig

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Using a multi-heterodyne scanning near-field optical microscope, we detect two arbitrary, orthogonal components of the near field. A numerical treatment of the experimental data allows the retrieval of the transverse and longitudinal components of the mode ...

We calculate the maximal absorption enhancement obtainable by guided mode excitation in a weakly absorbing dielectric slab over wide wavelength ranges. The slab mimics thin film silicon solar cells in the low absorption regime. We consider simultaneously w ...

We present a hybrid surface wave device, which combines Bloch surface wave (BSW) and plasmonic nanoantennas. BSWs offer in-plane dark-field illumination. Nanoantennas squeeze the incidence into nano-size and enable far-field readout without near-field tech ...

Ultra-thin polymer optical waveguide couplers for integrated optics based on Bloch surface waves (BSWs) are presented. Desirable BSW guiding properties, such as low loss and long propagation distance, are observed. The waveguide thickness is on the order o ...

We present a comparison between spectrally-resolved reflection measurements of gratings and theoretical predictions from RCWA approach. Diffraction intensities vary significantly with polarization, and surface plasmon absorption is observed around the onse ...

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 ...

Shaping of light fields behind amplitude and phase masks the basis the lithographic structure reproduction. The aerial image or better the intensity distribution defines the resolution of the structure to be printed. Contrast is the main parameter and to a ...

We try to find out the details of how light fields behind the structures of photomasks develop in order to determine the best conditions and designs for proximity printing. The parameters that we use approach real situations like structure printing at prox ...

We report on the fabrication and optical characterization of a switchable photonic crystal nanocavity actuated by liquid crystals. This device acts as a filter presenting a transmission peak around the telecom wavelength λ = 1550 nm. Passing from the isotr ...

In proximity lithography, interference and diffraction effects arise when printing small features because of the proximity gap. Different techniques are used in order to control and take advantage of theses effects. In this paper, the focus is set on the M ...

The fabrication of a slot waveguide cavity oriented to sensing application is demonstrated. The choice of materials and the development of the process flow steps, including E-beam lithography (EBL) and metal lift-off of a single thin layer, are illustrated ...

Glassy carbon is used nowadays for a variety of applications because of its mechanical strength, thermal stability and non-sticking adhesion properties. This makes it also a suitable candidate as mold material for precision compression molding of low and h ...

We report the first experimental demonstration of high quality factor confinement of Bloch surface waves at visible wavelengths. The cavities consist of planar Fabry-Perot resonators that are fabricated on top of a Bloch surface supporting substrate. This ...

A Si/Ge based, single mode, mid-infrared optical waveguide, is used as an evanescent sensor in liquid matrix. The selectivity is achieved by the use of quantum cascade lasers (QCLs) tuned to the maximum absorption of a given analyte. The cocaine detection ...

We demonstrate that an ultrathin ridge (< lambda/10) can guide Bloch surface waves in a dielectric multilayer. The propagation and polarization properties of the guided modes are investigated with a multi-heterodyne scanning near-field optical microscope. ...

We experimentally demonstrate critical coupling of whispering gallery mode (WGM) disk resonators implemented on a Bloch surface wave platform using scanning near-field optical microscopy. The studied structure is a 60 nm thick TiO 2 TiO2 WGM disk cavity (r ...

We propose here an application to sensing of annular aperture arrays (AAA). We theoretically investigate the optical properties of the reflective AAA device when illuminated in-plane. The cavity presents almost perfect absorption due to the waveguide mode ...

We investigate nondiffracting surface waves. On top of the Bloch surface wave platform, a 60-nm-thick TiO2 isosceles triangle serves as a 2D axicon. Scanning near-field microscopy measurements verify nondiffracting surface beam properties. ...

Hans Peter Herzig

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Near-field polarization measurements based on two arbitrary, orthogonal optical field components

Light trapping in solar cells at the extreme coupling limit

Hybrid surface wave device

Investigation of ultra-thin waveguide arrays on a Bloch surface wave platform

An RCWA Analysis of Solar Cell Back Reflectors: Comparison between Modelling and Experiment

Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

Lightfields behind amplitude masks: Creating phase discontinuities

Intensity and phase fields behind phase-shifting masks studied with high-resolution interference microscopy

Switchable photonic crystal cavity by liquid crystal infiltration

Coherence management in lithography printing systems

Fabrication of slot waveguide cavity for sensing application

Surface micro-structuring of glassy carbon for precision glass molding of diffractive optical elements

High Quality Factor Confinement Of Bloch Surface Waves At Visible Wavelengths

Refraction and interference in micro- and nanostructure optical elements

Single Mode Mid-infrared Waveguide for Evanescent Sensor Scheme in Liquids

Ultrathin waveguides for Bloch Surface Waves: near-field analysis of propagation and polarization

Experimental demonstration of critical coupling of whispering gallery mode cavities on Bloch surface wave platform

In-plane illuminated metallic annular aperture array for sensing application

Light Extraction Enhancement in Scintillation Crystals Using Thin Film Coatings

Nano-Thin 2D Axicon Generating Nondiffracting Surface Waves