Technique for continuous tuning of an extended-cavity diode laser.
Mode-hop-free operation of an extended-cavity diode laser is achieved with an innovative technique. A chirped (varied-line-space) diffraction grating is used as an external coupler. Continuous tuning is obtained by a simple linear translation of the grating. The measured continuous tuning range is currently as wide as 37 nm (4.6 THz) near 1550 nm with a relatively constant output power.
Fortin
Gilles
G
Centre d'Optique, Photonique et Laser, Département de Physique, de Génie Physique et d'Optique, Université Laval, Québec, Québec G1V 0A6, Canada.
McCarthy
Nathalie
N