Side-pumped fiber laser

Details Side-pumped fiber laser Side-pumped fiber laser

H - Electricity

01

S

H01S 3/30 (2006.01) G02B 6/26 (2006.01) G02B 6/28 (2006.01) G02B 6/42 (2006.01) H01S 3/094 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2364254

A side-pumped fiber laser includes an optical fiber having a core (18) and a cladding (20). The core (18) has an index of refraction n1, greater than that of the cladding (20), n2. The fiber laser further includes a coupling window (22) integrally formed within a channel formed in an upper side of the fiber cladding. The coupling window has an index of refraction n3, greater thant n1. The fiber laser further includes a laser light source (14), such as a laser diode bar(s), whose beam(s) are directed through the coupling window so as to couple the light directly to the fiber core (18). Bragg gratings (26) may also be included between the coupling window (22) and a reflective window (28).

L'invention concerne un laser à fibre à pompage latéral, qui comprend une fibre optique dotée d'une âme (18) et d'une gaine (20). n1, indice de réfraction de l'âme (18), est supérieur à l'indice de réfraction de la gaine (20), n2. La fibre comprend en outre une fenêtre de couplage (22) intégralement constituée à l'intérieur d'un canal formé dans un côté supérieur de la gaine. La fenêtre de couplage a un indice de réfraction, n3, supérieur à n1. Le laser à fibre comprend également une source (14) de lumière laser, par exemple une(des) tige(s) pour diode laser émettant un ou plusieurs faisceaux de lumière laser dirigés à travers la fenêtre de couplage, la lumière laser étant directement couplée à l'âme (18) de la fibre. Entre la fenêtre de couplage (22) et une fenêtre réfléchissante (28), on peut intégrer des réseaux Bragg (26).

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