LASER DEVICE

摘要

A laser device 1 demultiplexes seed light L 0 into a plurality of beams of laser light L 1 and then continuously optically amplifies the plurality of beams of the laser light L 1 with an amplifier 14. Therefore, its amplification factor can be set higher than that in the case of amplifying pulsed laser light. When producing multiplexed light L 3 by multiplexing the beams of the amplified laser light L 1 with a diffraction grating 16, respective phases of the beams of the laser light L 1 are controlled such that an output peak of the multiplexed light L 3 repeatedly appears at a converging position P 1 at a predetermined time interval. This produces pulsed laser light at the converging position P 1 from a plurality of beams of laser light L 2 amplified at a high amplification factor. Hence, this laser device 1 can produce pulsed laser light with a high output.