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OwnerArno Feisst, Armin Lambrecht +3inventors
InventorsArno Feisst, Armin Lambrecht, Ralf Wehrspohn, Frank Muller, Jorg Schilling
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The invention relates to a method for the analysis of the qualitative and/or quantitative composition of fluids with at least one light source, one interaction space area in which the light interacts with the fluid, and one detection device for detecting the interaction between the fluid and the light. The device and the method are characterised in that a photonic the gap structure is provided creating a greater reduced group velocity in the interaction space area and thus an increased dwell time for the light in the interaction space area. This means that the interaction space area can be considerably reduced in size, which allows a compact design of the device.
Device for the analysis of the qualitative and/or quantitative composition of fluids (13, 14) with:
Method for the analysis of the qualitative and/or quantitative composition of fluids using a light source (8) and a detection device (11, 11′, 37, 51 , 47, 48, 49) for the detection of the interaction of the light emitted by the light source (8) with the fluid, characterised in that at least a part of the light from the light source (8) due to the refractive index periodicity of a photonic band gap structure (10) propagates at a group velocity that is reduced in comparison with a vacuum and that at least a part of the light which due to the refractive index periodicity of the photonic band gap structure (10) propagates at a reduced group velocity interacts with a fluid (13) to be analysed.
Method according to one of the claims 62 to 68, characterised in that the power With which the light source (8) is supplied is modulated over time.
Dependencies are inferred from the claim text.