Optical quenching and recovery of photoconductivity in single-crystal   diamond
  We study the photocurrent induced by pulsed-light illumination (pulse duration is several nanoseconds) of single-crystal diamond containing nitrogen impurities. Application of additional continuous-wave light of the same wavelength quenches pulsed photocurrent. Characterization of the optically quenched photocurrent and its recovery is important for the development of diamond based electronics and sensing. 
Jeson Chen, Sean Lourette, Kristine Rezai, Tobias Hoelzer, Michael   Lake, Milos Nesladek, Louis-S. Bouchard, Philip Hemmer,...
physics.optics cond-mat.mes-hall