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    A microprocessor-controlled photon counter for pulsed optically detected magnetic resonance

    Date
    1979-08-01
    Author
    Power, R. K.
    Nishimura, A. M.
    Metadata
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    Citation
    The Review of scientific instruments. 1979 Aug; 50(8): 969-71.
    Abstract
    In pulsed optically detected magnetic resonance (ODMR) spectroscopy, a lock-in amplifier is used to monitor the signal which is phase-matched to the duty cycle of an applied sequence of pulses. However, since the desired signals reside atop a much larger amplitude-modulated signal, lock-in amplification methods are difficult to use. Commerically available photon counters are of limited use, because the pulsed ODMR method requires sequential counting over several time intervals, often with minimum time delay between the intervals. The multiaccumulator photon counter described here is capable of such sequential counting over as many as four intervals. The microprocessor which controls the counter algebraically manipulates the photon counts during each of the duty cycles. The result is an inexpensive yet versatile photon counter which is suited for pulsed ODMR and other applications in which sequential counting is necessary.
    Description
    Click on the DOI link below to access the article (may not be free).
    URI
    http://dx.doi.org/10.1063/1.1135980
    http://hdl.handle.net/10057/4349
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