Spectroscopy - Photonik

Advances in pharmaceutical analysis and quality control
Bild: Ondax

Spectroscopy

Advances in pharmaceutical analysis and quality control

An advanced optical filter technology now enables measurement of Raman signals into the low frequency/THz regime, thus revealing the structural signature of a compound. mehr

Biomolecular analysis using the bin-time correlation method
Bild: Fraunhofer FIT

Spectroscopy

Biomolecular analysis using the bin-time correlation method

A new fluorescence fluctuation spectroscopy method combines the advantages of fluorescence correlation spectroscopy with those of brightness-based methods for high-precision studies. mehr

Coherent hemodynamics spectroscopy
Bild: Tufts University

Spectroscopy

Coherent hemodynamics spectroscopy

Quantified assessments of cerebral perfusion can be derived from non-invasive near-infrared measurements using a new method. mehr

THz technology – from hype to market
Bild: Fraunhofer IPM

Spectroscopy

THz technology – from hype to market

Ten years ago terahertz technology was one of the “top ten” of technologies that would significantly change human life. What happened to that hype? mehr

Imaging multiplex Raman spectroscopy with no need for sequential scanning
Bild: AIP

Spectroscopy

Imaging multiplex Raman spectroscopy with no need for sequential scanning

State-of-the-art spatially resolved Raman spectroscopy so far has had to rely on the time-consuming technique of sequential scanning of the sample under study. However, advanced instrumentation for modern astronomical telescopes has spawned the development of the powerful technique of Integral Field Spectroscopy that enables to collect simultaneously... von Leibniz-Institut für Astrophysik, innoFSPEC Potsdam mehr

Spectroscopy

Non-invasive quality control of cryopreserved samples

A novel, contactless, Raman-based probe allows sample quality to be monitored during biobanking operations without thawing von Antoine Varagnat mehr

Spectroscopy

Revealing the invisible - identifying concealed substances by means of terahertz spectroscopy

Is that powder in the envelope dangerous? Is the right mixture flowing through the pipe? Is the semiconductor doped correctly? Terahertz spectroscopy can help answer these and other critical questions. This article first describes some of the special features of terahertz spectroscopy in relation to substances in their various physical states,... von Joachim Jonuscheit, D. Molter, F. Ellrich, R. Beigang, Fraunhofer IPM, KaiserslauternFrank Platte, K. Nalpantidis, Ianus Simulation GmbH, Dortmund, Germany mehr

Spectroscopy

Laser-based terahertz generation & applications

Superior to alternative methods, optoelectronic techniques propel terahertz applications out of the lab and into the real world. One physical effect involves two laser beams at adjacent frequencies focusing on a semiconductor; another effect involves an ultrafast laser pulse separating charge carriers in a photoconductive switch. In combination... von Marion Lang, Anselm Deninger, Toptica Photonics AG, Gräfelfing, Germany mehr

Spectroscopy

True-colour images by subwavelength gratings

Gratings with periods smaller than visible wavelengths exhibit colourising effects in the zeroth diffraction order when its profile is designed so that electromagnetic resonances are excited on the grating. These resonances have a spectral selective influence to the light spectrum and allow colour filtering of even unpolarised white light. Apart... von Hans Lochbihler, Papierfabrik Louisenthal GmbH, Gmund, Germany mehr

Raman-Spectroscopy for clinical laboratory analysis

Clinical laboratory analysis constitutes a considerable part of the medical diagnostic procedure, providing qualitative and quantitative chemical analysis of biomedical samples such as blood or serum. As an alternative or supplement to the reagent-based chemical analysis, Raman spectroscopy bears the potential to allow for a reagent-free, contact-less,... von Wolfgang Petrich, Roche Diagnostics GmbH, Mannheim, Germany and Fakultät für Physik und Astronomie, Universität Heidelberg, Germany mehr

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