This book constitutes the thoroughly refereed post-conference proceedings of the 4th
International Workshop on Optical SuperComputing OSC 2012 held in Bertinoro Italy in July
2012. The 11 papers presented together with 11 invited papers were carefully reviewed and
selected for inclusion in this book. Being an annual forum for research presentations on all
facets of optical computing for solving hard computation tasks OCS addresses the following
topics of interest: design of optical computing devices electro-optic devices for interacting
with optical computing devices practical implementations analysis of existing devices and
case studies optical and laser switching technologies applications and algorithms for optical
devices alpha particles X-rays and nano-technologies for optical computing.
