Laser space communications

Summary form only given. Compared with conventional RF systems several significant advantages offered by laser communication (lasercom) systems in space applications that are simple consequences of the short wavelengths (high frequencies) associated with optical waves. Among these advantages are (i) smaller antenna (telescope), (ii) smaller size and weight of the components, (iii) power concentration in a very narrow beam, and (iv) the potential increase in modulation bandwidth. Applications that could benefit from lasercom are those that have platforms with limited weight and space, require very high data links, and/or involve deep space return links.