Q-SWITCHED FIBER LASER

摘要

A fiber laser, null coupler acoustic Q-switch, fiber amplifier and feedback system is described for generation of high power laser pulses.

主权项

1. A system characterised by:
an active fiber pumped by a diode laser, one end of said active fiber being connected to an input terminal of a null coupler and another end of said active fiber being connected to an isolator which is connected to an output terminal of said null coupler, wherein an acoustic distortion from an acoustic transducer is imposed on said null coupler which causes light originating from said active fiber pumped by the laser to be routed from the output terminal of the null coupler to the input terminal wherein said light is then fed-back into said active fiber via the isolator, and wherein the null coupler has a refractive index and the acoustic distortion induces local-temporal change of the refractive index.