Edited by two renowned players in this vibrant and fast-moving field, this monograph fills a gap in the literature by concentrating on applications of the OAM. Examples include:<br> * The OAM of a light beam<br> * Generation and detection of the OAM<br> * The rotational frequency shift<br> * Transfer of OAM to trapped particles<br> * Torques in liquid crystals<br> * Micro-machines using the OAM of light<br> * Applications to microfluidics<br> * Digital spiral imaging<br> * Applications to astrophysics<br> * Edge contrast enhancement in light microscopy<br> * The optical vortex coronograph<br> * OAM of single photons<br> * Bose-Einstein Condensation <br> * Applications in atomic physics<br> For physicists, solid state physicists, materials scientists, astronomers and those working in the optical industry.