Hans Peter Herzig

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Related publications (110)

Surface plasmon resonance sensor showing enhanced sensitivity for CO2 detection in the mid-infrared range

Andrea Crottini, Lorenzo Sirigu, Jérôme Faist, Sylvain Herminjard, Hans Peter Herzig

We present the first optical sensor based on Surface Plasmon Resonance (SPR) operating in the mid-infrared range. The experimental setup is based on a Kretschmann geometry with Ti/Au layers deposited on a CaF2 prism where light excitation is provided by a ...

2009

Asymmetrical excitation of surface plasmon polaritons on blazed gratings at normal incidence

Tristan Sfez, Hans Peter Herzig, Libo Yu

We present results of numerical simulations and preliminary experiments to investigate and characterize the effect of asymmetrical coupling of normally incident light to surface plasmon polaritons (SPPs) on metallic blazed gratings. Two types of blazed gra ...

2009

Multifunctional Micro-Optical Elements for Laser Beam Homogenizing and Beam Shaping

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

2008

Microlenses on Bragg Reflectors to Create Iridescent Colors

Hans Peter Herzig, Toralf Scharf

In nature strong colors play an important role in scaring away predators or finding a mate. Often, the strongest and brightest colors arise from coherent scattering and reflection on periodic structures on a length scale of several micro- or nanometers. Un ...

2008

Refractive statistical concave 1D diffusers for laser beam shaping

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

2008

Polarization sensitive diffuser

Hans Peter Herzig, Toralf Scharf

With help of liquid crystal polymers (LCP) a polarization sensitive diffuser has been realized. By using convex microstructures made of LCP and an index matching layer, two distinct functions depending on the orientation of the device and the polarization ...

2008

Two step process for the fabrication of diffraction limited concave microlens arrays

Hans Peter Herzig, Irène Antoinette Philipoussis, Toralf Scharf

A two step process has been developed for the fabrication of diffraction limited concave microlens arrays. The process is based on the photoresist filling of melted holes obtained by a preliminary photolithography step. The quality of these microlenses has ...

2008

Refraction and interference in micro- and nanostructure optical elements

Hans Peter Herzig, Toralf Scharf

2008

Interferometric Measurement on a Nanometric Length Scale

Hans Peter Herzig, Myun Sik Kim, Toralf Scharf

We investigate a measurement technique based on High Resolution Interference Microscopy (HRIM). HRIM allows the characterization of amplitude and phase of electromagnetic wave-fields in the far-field with a spatial accuracy that corresponds to a few nanome ...

2008

Tuning the resonance of a photonic crystal microcavity with an AFM probe

Iwan Märki, Hans Peter Herzig

We present theoretical and experimental results on switching and tuning of a two-dimensional photonic crystal resonant microcavity by means of a silicon AFM tip, probing the highly localized optical field in the vicinity of the cavity. On-off switching and ...

2006

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