![Student SPCM diy Single-Photon Counting Module designed by students at University of Illinois](http://www.diyphysics.com/wp-content/uploads/2012/01/Student-SPCM.jpg)
Image Credit: Oliver Jan and Phil Makotyn
In 2006, then-students Oliver Jan and Phil Makotyn from University of Illinois (at Professor Paul Kwiat’s lab) developed an actively-quenched Single-Photon Counting Module (SPCM) based on the Perkin-Elmer C30902S-DTC Single-Photon Avalanche Photodiode (SPAD). Continue reading