System and method for detecting multiple-excitation-induced light in a flow channel

    公开(公告)号:US11287379B2

    公开(公告)日:2022-03-29

    申请号:US16833235

    申请日:2020-03-27

    Abstract: A system for detecting signal components of light induced by multiple excitation sources including: a flow channel including at least two spatially separated optical interrogation zones; a non-modulating excitation source that directs a light beam of a first wavelength at a near constant intensity onto a first of the optical interrogation zones; a modulating excitation source that directs a light beam of a second wavelength with an intensity modulated over time at a modulating frequency onto a second of the optical interrogation zones; a detector subsystem comprising a set of detectors configured to detect light emitted from particles flowing through the at least two optical interrogation zones and to convert the detected light into a total electrical signal; and a processor that determines signal components from the light detected from each of the optical interrogation zones.

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