The Parallel Internal-Master-Oscillator Power-Amplifier for Phase Matching the Output Beams of Multi-Line Lasers.

摘要

A conceptual device optics system is discussed, which, in principle, allows combining, on a large mirror, the multiline outputs of an arbitrary number of separate laser devices. In principle, each lasing transition from each laser will be in phase with the corresponding transition from the other laser devices that illuminate the other parts of the mirror. This will be true even if the multiline lasing transitions fluctuate rapidly (go on and off). The concept involves the use of several equal size laser segments, possibly arranged in a polygon configuration for compactness. One segment is run as an oscillator; its output is split into a number of beams, which are used to drive the other laser segments as amplifiers. Because of the multiline nature of the laser mechanism, the basic requirement of the system is that the absolute lengths of the paths through the amplifiers from the oscillator output mirror to the large collecting mirror be equal. In this report, the concept is developed in its simplest form; however, it should be compatible with both adaptive optics beam control (multisection movable mirrors) and techniques to correct beam steering caused by anomalous dispersion or by other effects. (Author)