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Direct fabrication of surface relief gratings in chalcogenide glasses by excimer laser interference lithography

In this paper we study the possibility to realise surface relief gratings in thin chalcogenide glass films by holographic exposure using a pulsed KrF excimer laser. Gratings with a period of 540 nm and...

Second harmonic generation as a technique to probe buried interfaces

Since the advances of femtosecond laser technology during the last decade, optical second harmonic generation (SHG) has proven itself a powerful tool to investigate the electronic and structural properties...

Fast measurement of fluorine distribution in doped fused silica by pulsed Raman scattering

We present short time measurements to determine the distribution of fluorine dopant in extended fused silica samples. These measurements are based on pulsed Raman spectroscopy. Our investigations are starting...

Nanoimaging for prion related diseases

Misfolding and aggregation of prion proteins is linked to a number of neurodegenerative disorders such as Creutzfeldt- Jacob disease (CJD) and its variants: Kuru, Gerstmann-Straussler-Scheinker syndrome...

Raman to the limit: tip-enhanced Raman spectroscopic investigations of a single tobacco mosaic virus

The development of fast identification techniques of viruses is an ongoing important research topic. Conventional virus detection and identification is generally based on various different microbiological...

Towards a quantitative SERS approach – online monitoring of analytes in a microfluidic system with isotope-edited internal standards

In this contribution a new approach for quantitative measurements using surface-enhanced Raman spectroscopy (SERS) is presented. Combining the application of isotope-edited internal standard with the advantages...

Type IIA Grating Inscription in a Highly Nonlinear Microstructured Optical Fiber

The fabrication of Type IIA Bragg reflectors in a highly Ge-doped microstructured optical fiber using 193-nm 10-ns laser radiation is reported. Refractive index evolution curves for both average and modulated...

Distinguishing and characterizing hair follicle tissue layers using fourier transform infrared spectroscopy

Higher Order HTSC Gradiometer for Measurements in Unshielded Environment

We present a new higher order gradiometer layout for bicrystal Josephson junctions based on high-temperature superconducting thin films. Our single layer gradiometers are suitable for the simultaneous...

Fast exact scalar propagation for an in-line holographic microscopy on the diffraction limit