The study of low-dimensional semi-conductor structures is one of the most intensively studied fields of modern semiconductor physics. Semiconductor structures in the nanometer range reveal a wealth of new and fascinating physical properties. Optical properties serve not only to characterise the semiconductor structures, but are themselves of fundamental physical interest. There are promising applica-tions in optoelectronics and photonics and more can be expected. This volume "Optics of Semiconductor Nanostructures", which describes the current state of research and the latest developments, comprises a coordinated series of individual contributions from leading international authorities.