Queen's University at Kingston

Universitaet Potsdam

Universität Potsdam

Oliver Reich

Hans-Peter Loock

Nicholas L P Andrews

Hans-Gerd Löhmannsröben

Nicholas L Andrews

Nabarun Polley

Roland Hass

Described herein is an excitation emission matrix (EEM) spectrometer and method, comprising a multiplexer that encodes excitation light produced by at least one excitation light source; and a demultiplexer that decodes encoded light emitted from a sample, and produces an output indicative of a characteristic of the sample. Embodiments are described wherein the multiplexer and the demultiplexer may comprise FDM or OFDM, and wherein both the excitation light and the emitted light may be encoded using a DMA or a SLM. In some embodiments the same DMA or SLM may be used to encode the excitation light and the emitted light. In some embodiments excitation light may be encoded using a Walsh function, or the excitation light may be encoded using a Walsh function and the emitted light may be decoded using an inverse Hadamard transformation.

Multiplexed excitation emission matrix spectroscopy

The invention relates to a measuring arrangement for an optical spectrometer, in particular a photon density wave spectrometer, having a measuring chamber, which can be loaded with a sample to be measured, and a coupling-in/coupling-out device which is configured to receive excitation light from a light source and couple it into the sample to be measured in the measuring chamber and to receive measuring light formed in the sample to be measured on account of the excitation light which has been coupled in and to emit said measuring light to a detection device, wherein the coupling-in/coupling-out device has an optical switching device and a plurality of light guide elements which couple to the latter, have a respective optical waveguide and can be connected according to at least one selectable measuring configuration using the optical switching device in order to couple in the excitation light and receive the measuring light according to the at least one selectable measuring configuration, and wherein outputs of the plurality of light guide elements are positioned according to a spiral arrangement in the viewing direction of the outputs.

Measuring arrangement for an optical spectrometer

Growing community of inventors

Potsdam, Germany

Oliver Reich