Light Emitting Silicon for Microphotonics offers fascinating insight the state-of-the-art in silicon microphotonics and what we can expect in the near future. The book presents an overview of the current understanding of obtaining light from silicon. It concentrates on low-dimensional silicon structures, like quantum dots, wires and wells, but also covers alternative approaches like porous silicon and the doping of silicon with rare-earth elements. The emphasis is on the experimental and theoretical achievements concerning the optoelectronic properties of confined silicon structures, especially sillicon-based photonic crystals, obtained during recent years. Also, an in-depth discussion of the route towards a silicon laser is presented.