This Letter presents an active quench-and-reset circuit for Geiger-mode avalanche photodiodes (GM-APDs). The integrated circuit was fabricated using a conventional 0.35 μm complementary metal oxide semiconductor process. Experimental results show that the circuit is capable of linearly setting the hold-off time from several nanoseconds to microseconds with a resolution of 6.5 ns. This allows the selection of the optimal afterpulse-free hold-off time for the GM-APD via external digital inputs or additional signal processing circuitry. Moreover, this circuit resets the APD automatically following the end of the hold-off period, thus simplifying the control for the end user. Results also show that a minimum dead time of 28.4 ns is achieved, demonstrating a saturated photon-counting rate of .
© 2012 Optical Society of AmericaFull Article | PDF Article
More Like This
Appl. Opt. 48(9) 1705-1714 (2009)
Simone Tisa, Fabrizio Guerrieri, and Franco Zappa
Opt. Express 16(3) 2232-2244 (2008)
S. Cova, M. Ghioni, A. Lacaita, C. Samori, and F. Zappa
Appl. Opt. 35(12) 1956-1976 (1996)