Lasers and their application to the observation of Bose Einstein condensates The first part of this book overviews the physics of lasers and describes some of the more common types of lasers and their applications. Applications of lasers include CD DVD players laser printers and fiber optic communication devices. Part II of this book describes the phenomenon of Bose Einstein condensation. The experimental techniques used to create a Bose Einstein condensate provide an interesting and unconventional application of lasers; that is the cooling and confinement of a dilute gas at very low temperature.