Laser source.

摘要

An hybrid laser source has a ring structure including the optical path in a semiconductor amplifier chip(1) and optical fibres (2, 3 and 4). The fibre (2) is rare-earth doped and provides an additional gain medium in the ring, the chip providing its own gain medium. The two gain media are interactive and when the chip input current is-modulated the source produces relatively high peak power ultrashort pulses.