Early history of quantum electronics.

Discusses the early history of quantum electronics. Ideas essential to making a laser before; Impediment to the laser invention; Microwave amplification using a beam of molecules; Indicator that even in the 1950s physicists and engineers did not think amplification by stimulated emission; Obtaining stimulated emission from a molecular beam; Direction of masers or lasers; Scientists who made significant contributions to the field; Field of masers and 'optical masers' or lasers.