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Hans Peter Herzig

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Related publications (110)

Nanostructured surface fabricated by laser interference lithography to attenuate the reflectivity of microlens arrays

Pierre-Yves Baroni, Hans Peter Herzig, Toralf Scharf

A subwavelength-scale square lattice optical nanostructure is fabricated using an interference photolithography process on the surface of a quartz microlens array. This nanostructuring of the quartz surface introduces an antireflective effect, reducing ref ...

2010

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

Tristan Sfez, Hans Peter Herzig, Olivier Martin, Daniele Brunazzo, Libo Yu

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. ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

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

Christophe Ballif, Hans Peter Herzig, Karin Söderström, Vincent Paeder, Toralf Scharf, Franz-Josef Haug, Ali Naqavi

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 ...

2010

Measurements of light fields emerging from fine amplitude gratings

Hans Peter Herzig, Myun Sik Kim, Toralf Scharf

High resolution amplitude and phase of light fields emerging from a 2-μm-period amplitude grating are measured for different wavelengths. The amplitude gratings lead to highly periodic patterns caused by the Talbot effect. Such patterns reach periodicities ...

2010

Bloch surface waves in ultrathin waveguides: near-field investigation of mode polarization and propagation

Tristan Sfez, Hans Peter Herzig, Olivier Martin, Daniele Brunazzo, Libo Yu, Francesco Michelotti

In this work, we use a multi-heterodyne scanning near-field optical microscope to investigate the polarization and propagation of Bloch surface waves in an ultrathin (similar to lambda/10) ridge waveguide. First, we show that the structure sustains three s ...

2010

Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

Tristan Sfez, Hans Peter Herzig, Olivier Martin, Daniele Brunazzo, Francesco Michelotti

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 ...

American Chemical Society (ACS)2010

Small-size microlens characterization by multiwavelength high-resolution interference microscopy

Hans Peter Herzig, Myun Sik Kim, Toralf Scharf

Microlenses are widely studied in two main areas: fabrication and characterization. Nowadays, characterization draws more attention because it is difficult to apply test techniques to microlenses that are used for conventional optical systems. Especially, ...

Optical Society of America2010

Fabrication of slot waveguide cavity for sensing application

Hans Peter Herzig, Armando Cosentino, Qing Tan

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 ...

2010

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

Tristan Sfez, Hans Peter Herzig, Olivier Martin, Daniele Brunazzo, Libo Yu, Francesco Michelotti

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 ...

2010

Amplitude and Phase Fields of Photonic Nanojets

Hans Peter Herzig, Myun Sik Kim, Toralf Scharf

We report on advanced 3D direct imaging of light fields emerging from a photonic nanojet. We used an interference microscope that allows observation of amplitude and phase at the highest resolution. For the first time cross polarization interferometry is u ...

2010

Metallic Optical Nanostructures: a Solution for Planar Integrated Sensors on Waveguides

Hans Peter Herzig, Armando Cosentino, Qing Tan

We study the optical properties of two different metallic nanostructure arrays for lable-free sensing applications. The sensors are optimized to detect refractive index (RI) variations. The optical interaction between light and analyte is enhanced by field ...

2010

Fabrication and characterization of linear diffusers based on concave micro lens arrays

Nico de Rooij, Hans Peter Herzig, Wilfried Noell, Roland Andreas Bitterli, Toralf Scharf

We present a new approach of beam homogenizing elements based on a statistical array of concave cylindrical microlens arrays. Those elements are used to diffuse light in only one direction and can be employed together with fly’s eye condensers to generate ...

Optical Society of America2010

Field of view extension using satellite pinhole cameras

Hans Peter Herzig, Toralf Scharf

An approach to extend the field of view of a miniaturised imaging system is introduced. This innovative approach uses multiple optical systems working in parallel and image post-processing. As an example, a module consisting of a central single micro-lens ...

2010

Two-dimensional optics on silicon nitride multilayer: Refraction of Bloch surface waves

Tristan Sfez, Hans Peter Herzig, Libo Yu, Francesco Michelotti

When properly designed, a dielectric multilayer can sustain Bloch surface waves (BSWs). Using a multiheterodyne scanning near-field optical microscope that resolves phase and polarization, we will show that a thin dielectric structure deposited on the mult ...

American Institute of Physics2010

Switchable photonic crystal cavity by liquid crystal infiltration

Pierre-Yves Baroni, Hans Peter Herzig, Armando Cosentino, Vincent Paeder, Qing Tan, Toralf Scharf

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 ...

European Optical Society2010

Fabrication and Characterization of 1-D diffusing elements

Hans Peter Herzig, Roland Andreas Bitterli, Myun Sik Kim, Toralf Scharf

Certain high power laser applications require thin homogeneous laser lines. In this paper we describe the concept, fabrication and characterization of a 1-D diffuser that generates such a line. The device is based on an array of concave cylinder lenses wit ...

2009

High resolution displacement detection with speckles

Hans Peter Herzig, Toralf Scharf

2009

Gas Detection with a Micro FTIR Spectrometer in the MIR Region

Nico de Rooij, Hans Peter Herzig, Danick Briand, Toralf Scharf

We report on the application of a silicon micromachined lamellar grating interferometer in a Fourier Transform Infrared (FTIR) spectrometer for the detection of gases in the mid-infrared (MIR) region. The FTIR spectrometer was equipped with MIR optical fib ...

Elsevier2009

High Resolution Interference Microscopy: 3D measurement of focused light at 405nm applied to optical disc

Hans Peter Herzig, Myun Sik Kim, Toralf Scharf

High capacity data storage on DVD and optical discs is based on focused light beams. The characterization of light fields within the focus point is a very difficult task, which requires a high-resolution method like scanning near field optical microscopy ( ...

2009

Lamellar grating interferometer in a Fourier transform IR spectrometer

Hans Peter Herzig, Toralf Scharf

2009

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