Water quasi-cw, diffraction limited semiconductor double tapered laser oscillator

Abstract

Semiconductor laser sources are compact and convenient. They can be easily integrated with other semiconductor devices. They are useful as the source for free space communications between satellites; for optical radar and for pumping fibre amplifiers in optical fibre communication systems. They are also useful for many other applications. For free space communications, a single frequency high power light source of narrow line width and large band-width is required. Coherent communication systems require a high power source, with a single transverse mode and single longitudinal mode