Laser beam coupler, shaper and collimator

Details Laser beam coupler, shaper and collimator Laser beam coupler, shaper and collimator

G - Physics

02

B

G02B 27/10 (2006.01) G02B 27/09 (2006.01) G02B 27/14 (2006.01) H01S 5/022 (2006.01)

Patent

CA 2314069

An apparatus for providing improved high power laser beams. An elongated reflector (20) with a highly reflective inner surface (26) is utilized with a laser beam emitter (22), such as a broad area diode laser, a diode laser bar, or a diode laser array. The laser beams (24) disperse and reflect off of the highly reflective inner surface (26) which is curved substantially parabolically. The inner surface (26) is coated with a highly reflective material such as aluminum or nickel. The reflected beams (28) are collimated, and can be shaped and/or coupled by manipulation of the size and shape of the elongated reflector (20) and the placement of the laser beam emitter (22) in association therewith. A system of lenses and/or mirrors in conjunction with a non-linear crystal can also be utilized with the present invention.

L'invention concerne un appareil émettant des faisceaux laser haute puissance améliorés. Un réflecteur allongé (20), doté d'une surface interne hautement réfléchissante (26), est utilisé avec un émetteur laser (22), du type diode laser à grande surface, barre à diodes laser ou réseau à diodes laser. Les faisceaux laser (24) se dispersent et se réfléchissent à partir de la surface interne hautement réfléchissante (26), incurvée sensiblement à la manière d'une parabole. La surface interne (26) est revêtue d'un matériau hautement réfléchissant, du type aluminium ou nickel. Les faisceaux réfléchis (28) sont collimatés, avec possibilité de mise en forme et/ou de couplage par manipulation de la taille et de la forme du réflecteur allongé (20) et modification de l'emplacement de l'émetteur laser (22) associé. Un système de lentilles et/ou de miroirs coopérant avec un cristal non linéaire peut aussi être utilisé en liaison avec l'appareil considéré.

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