Apparatus for providing optical radiation

Details Apparatus for providing optical radiation Apparatus for providing optical radiation

H - Electricity

01

S

H01S 3/067 (2006.01) B23K 26/00 (2006.01) G02B 6/10 (2006.01) H01S 3/0941 (2006.01)

Patent

CA 2652006

Apparatus (380) for providing optical radiation (381), which apparatus comprises a seed laser (382) for providing seeding radiation (387), at least one amplifier (383) for amplifying the seeding radiation (387), and a reflector (384), wherein the seed laser (382) is a Fabry Perot semiconductor laser, the seed laser (382) is connected to the amplifier (383) via the reflector (384), the reflector (384) is arranged to reflect a proportion (388) of the seeding radiation (387) emitted by file seed laser (382) back into the seed laser (382), and the amplifier (383) comprises an optical fibre (1) which comprises a core (3) having a refractive index n1 and a pedestal (4) having a refractive index n2, and wherein the optical fibre (1) includes a first cladding (5) made of glass having a refractive index n3 surrounding the pedestal (4), wherein n1 is greater than n2, and n2 is greater than n3.

L'invention concerne un appareil (380) de rayonnement optique (381), qui comporte un laser d'ensemencement (382) conçu pour fournir un rayonnement d'intensification (387), au moins un amplificateur conçu pour amplifier le rayonnement d'intensification (387) et un réflecteur (384), le laser d'ensemencement (382) est un laser semiconducteur de type Fabry Perot, le laser en ensemencement (382) est connecté à l'amplificateur via le réflecteur (384), le réflecteur (384) est disposé de manière à réfléchier une proporation (388) du rayonnement d'intensification (387) émis par renvoi du laser d'ensemencement dans le laser d'ensemencement (382), et l'amplificateur (383) comprend une fibre optique (1) comportant un noyau (3) possédant un indice de réfraction n1 et un piédestal (4) ayant un indice de réfraction n2, la fibre optique (1) comportant une première gaine (5) en verre dont l'indice de réfraction n3 entoure le piédestal (4), n1 étant supérieur à n2 et n2 étant supérieur à n3.

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