COLLISION PULSE MODE-LOCKED SEMICONDUCTOR LASER

摘要

PROBLEM TO BE SOLVED: To easily generate a short light pulse row at arbitrary repetition frequency and to make the repetition frequency variable. SOLUTION: A collision pulse mode-locked semiconductor laser has a supersaturated absorption region 3 at a position, where uniformly spaced plural light pulses circulating in a resonator collide. In this case, a zigzag wave guiding path which is folded back several times through Y-shaped bifurcations 2 is formed between opposed ends. The supersaturated absorption region 3 is disposed at one end, and the position of the other end is set with a high accuracy.