Wavelength stabilized laser sources using feedback from...

H - Electricity – 01 – S

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H01S 3/13 (2006.01) H01S 5/0687 (2006.01) H01S 5/14 (2006.01)

Patent

CA 2171742

A laser (11) utilizes feedback from a volume holographic (12) grating used as a wavelength standard to lock the laser output wavelength to its desired value. This feedback can be non-optical, wherein the holographic filter output is used to actively control the wavelength through an external control mechanism. This feedback can also be optical, wherein a volume hologram reflection grating is used to generate optical feedback into the laser gain.

Le laser (11) de la présente invention utilise le retour provenant d'un réseau holographique de volume (12). Ce retour sert de longueur d'onde de référence pour le verrouillage de la longueur d'onde de la sortie laser à une valeur voulue. Le retour peut ne pas être optique. Dans ce cas, la longueur d'onde est régulée au moyen d'un instrument externe de régulation utilisant la sortie du filtre holographique. Le retour peut également être optique. Dans ce cas, un réseau de réflexions produit par un hologramme de volume sert à générer un retour optique injecté dans le gain laser.

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