OPTICAL ARRANGEMENT FOR PULSED ILLUMINATION, METHOD FOR PULSED ILLUMINATION AND MICROSCOPE

    公开(公告)号:US20190339500A1

    公开(公告)日:2019-11-07

    申请号:US16305902

    申请日:2017-05-31

    Abstract: An optical arrangement has an optical beam path for illuminating a sample space with a sequence of laser light pulses generated in a laser cycle, the optical arrangement. At least one laser light source is configured to generate the sequence of laser light pulses along the optical beam path. A wavelength-selective pulse picker is situated in the optical beam path and has, in a predefined illumination clock timing synchronizable with the laser light pulses, an open state in which the pulse picker is light-transparent to at least one laser light pulse towards the sample space. The open state has at least two different transmission states which differ with regard to their respective transmission spectrums, and wherein the two transmission states are switchable on and/or off independently of one another.

    LASER SCANNING MICROSCOPE AND METHOD FOR DETERMINING A POSITION OF A FLUOROPHORE

    公开(公告)号:US20230008453A1

    公开(公告)日:2023-01-12

    申请号:US17779592

    申请日:2020-11-18

    Abstract: A laser scanning microscope includes a light source configured to emit an illumination light beam. The illumination light beam has a transverse light intensity profile comprising an intensity minimum. The laser scanning microscope further includes a scanning device configured to scan the illumination light beam along a closed trajectory in a target area of a specimen, and a detector configured to detect fluorescence light emitted by a fluorophore within the target area of the specimen. The fluorophore is excited by the illumination light beam. The laser scanning microscope further includes a processor configured to determine an intensity distribution of the fluorescence light as a function of time and to determine a position of the fluorophore within the target area based on the intensity distribution of the fluorescence light.

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