Abstract:
A device (300, 400) for determining gas concentration of a volume (301 ) in a closed space non-invasively, comprises a laser emitting means (302) for emitting laser beam (306) into said volume (301 ) in order to produce rotational Raman scattering of at least one gas component to be determined within said volume (301 ). A first guiding means (309) is used for guiding scattered beams (307) from the volume (301 ) to a filter (305), which transmits essentially only bandwidth of the scattered beams (307) and not the bandwidth of the laser (302). A detector (311) is used for detecting intensities of the scattered beams (307). In addition a second guiding means (308) is used before the detector (311) for guiding and spreading the scattered beams (307) onto the surface of said detector (311) so that different wavelengths of scattered beams (307) are guided onto different locations on the surface of said detector (311), where each of said different wavelengths correspond to a certain gas component of the volume (301) detected.
Abstract:
A method for detecting trace evidence materials on a surface comprises irradiating the surface with radiation from two or more lasers emitting radiation at different wavelengths selected to stimulate luminescence in the trace materials. The evidence is detected by observing the surface through an optical filter arranged to transmit the luminescence, while blocking transmission of the laser radiation wavelengths reflected or scattered from the surface.
Abstract:
A spectroscopic method and system to identify a biofÊlm of a microorganism. A sample containing a sample microorganism is irradiated with substantially monochromatic radiation. A Raman data set is obtained based on radiation scattered from the irradiated sample. A database is searched in accordance with the Raman data set in order to identify a known Raman data set from the database. The database contains a plurality of known Raman data sets where each known Raman data set is associated with a known sessile form of a corresponding known microorganism. A sessile form of the sample microorganism is identified based on the known Raman data set identified by the searching.
Abstract:
The disclosure is generally directed to a method and apparatus for providing an image of a sample. The apparatus includes an illuminating source for transmitting photons to a sample. The transmitted photons illuminate the sample or are scattered upon reaching the sample. A lens collects the scattered photons and transmits the scattered photons to a tunable filter for forming an image. The illuminating photons traveling from the illuminating source to the sample do not pass through the lens.
Abstract:
The disclosure generally relates to a system for detecting a change in an attribute of a substance. The system may include a photon source for producing a first of a plurality of photons which interact with the substance while an attribute of the substance changes to produce a second plurality of photons. The system may also include a filter for receiving the collected photons and providing filtered photons; a photon detector for receiving the filtered photons and obtaining therefrom a spectrum of the substance; and a processor for detecting an aspect of the filtered photons wherein the aspect of the filtered photons is the function of the attribute of the substance.
Abstract:
The disclosure is generally directed to a method and apparatus for providing an image of a sample. The apparatus includes an illuminating source for transmitting photons to a sample. The transmitted photons illuminate the sample or are scattered upon reaching the sample. A lens collects the scattered photons and transmits the scattered photons to a tunable filter for forming an image. The illuminating photons traveling from the illuminating source to the sample do not pass through the lens.