Silicon Photomultiplier Based on Short Deadtime Active Reset Quenching Circuit

• Main Authors: Huang, Wei-Syun, 黃煒勛
• Other Authors: Lin, Sheng-Di
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/g5d37r

碩士 === 國立交通大學 === 電子研究所 === 106 === In this work, we realize a photodetector whose deadtime is controllable from 2 ns~30 ns with an external passive quenching and active reset circuit by using single photon avalanche diodes (SPADs) applying TSMC 0.18 m HV standard CMOS technology. In addition to single pixel, we also complete a 6x4 pixel array made of SPADs tape-out to increase light absorption area. This system composed of the chip, laser and optical path design demonstrates a range-finding function. In addition, we finish the results and analysis them further, then compare the range detection of the single device with the 6x4 pixel array. Because of the shortening of deadtime, we can estimate that afterpulsing probability(app) which is highly correlated to deadtime will increase. Then we do the experiment about app to analysis. In this LIDAR system, we use pulse laser whose reputation rate is 1 MHz and its wavelength is 780 nm. We complete the detection of 100 meter in the short integration time, and the maximum deviation value is less than 0.2%. These results demonstrate that SPAD has great potential for combining it with Autonomous Emergency Braking system which can be applied to autonomous cars.