A Geiger-Mode APD Photon Counting System With Adjustable Dead-Time and Interchangeable Detector PROJECT TITLE :A Geiger-Mode APD Photon Counting System With Adjustable Dead-Time and Interchangeable DetectorABSTRACT:A Geiger-mode avalanche photodiode (GM-APD) photon counting system is presented during this letter. The system provides a maximum counting rate of thirty five Mcounts/s and is capable of directly displaying the counting rate and data logging to a PC. In this system, the detector will be easily modified to boost its usefulness in different applications. A novel active quench and reset integrated circuit (AQR-IC) is designed for the system with adjustable hold-off time from several nanoseconds up to 1.6 $mu texts$ with a setting resolution of $sim six.5$ ns. This facilitates optimal performance when using completely different sorts of APDs. The AQR-IC conjointly registers each avalanche event as a TTL pulse that is processed by a microcontroller to calculate the photon-counting rate. The microcontroller can be interfaced with a PC over USB to record the measured information and to permit more processing. Software was additionally written to calculate the photon-counting rate, show the results and save the info to files. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Dual Polarization Coherent Optical Spectrally Efficient Frequency Division Multiplexing Micrometer Wire Assisted Inline Mach–Zehnder Interferometric Curvature Sensor
