Mode-locked fibre ring laser stabilisation

Details Mode-locked fibre ring laser stabilisation Mode-locked fibre ring laser stabilisation

H - Electricity

01

S

H01S 3/083 (2006.01) H01S 3/067 (2006.01) H01S 3/098 (2006.01) H01S 3/13 (2006.01) H01S 3/139 (2006.01)

Patent

CA 2146022

A method is described of stabilising the output of a mode-locked fibre ring laser (1). The fibre constituting the laser (1) includes a dopant in its core. The method comprises the steps of ajusting the length of the ring laser (1) to minimise variations in its cavity length, and hence lock the phase of the laser output pulses with that of its drive source (2), and subjecting a portion (1a) of the fibre of the ring laser (1) to vibrations at a predetermined frequency whose period is less than the dopant ion upper state lifetime.

Procédé de stabilisation de la sortie d'un laser annulaire (1) à fibre et à modes verrouillés. La fibre optique composant le laser (1) comprend un dopant dans son âme. Ce procédé consiste à ajuster la longueur du laser annulaire (1) afin de minimiser les variations de longueur de sa cavité, et, ainsi, de verrouiller la phase des impulsions de sortie de laser avec celle de sa source de commande (2), et à soumettre une partie (1a) de la fibre du laser annulaire (1) à des vibrations d'une fréquence prédéterminée dont la période est inférieure à la durée de vie à l'état supérieur de l'ion dopant.

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