Broad band continuous tunable laser

摘要

The invention relates to a broad band continuous tunable laser. The laser includes a first laser cavity mirror, a laser gain medium, an intracavity collimating lens, an active optical phase modulator, a tunable acousto-optic filter, and the tunable laser further includes an intracavity reflection mirror to reflect the first order diffracted beam of the first diffraction back to the tunable acousto-optic filter to compensate the wavelength shift, a tunable Fabry-Perot filter arranged in the optical path of the second diffraction beam, a second laser cavity mirror and a laser drive and control circuit system. A stable laser output and the precision optical frequency tuning for less than 1 GHz frequency accuracy within a wide spectrum range can be realized. The invention is compact with stable performance, low cost for volume production and easy installation without moving parts.