Laser system

H - Electricity – 01 – S

Patent

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Details

H01S 3/00 (2006.01) B23K 26/04 (2006.01) B23K 26/06 (2006.01) B23K 26/073 (2006.01) H01S 3/23 (2006.01) H01S 5/40 (2006.01)

Patent

CA 2461753

A solid-state laser beam emitted from an Nd:YAG laser unit is superposed by a laser diode beam emitted from a superposition LD oscillating in a shorter wavelength band than the solid-state laser by using a dichroic beam splitter and then the superposed beams are introduced into a optical fiber. The superposition LD and the solid-state laser are adapted to irradiate an object to be processed in such a manner that their absolute irradiation positions and irradiation shapes are almost identical. Accordingly, it is possible to solve the problem of a high cost and high power consumption of a laser apparatus caused by a low energy conversion which is a disadvantage of a high-output high-luminance solid-state laser unit.

Un faisceau de diode laser émis à partir d'une diode laser de superposition oscillant dans une bande de longueur d'onde plus courte que le laser solide vient se superposer sur un faisceau laser émis à partir d'une unité laser Nd :YAG. On utilise un séparateur de faisceau dichroïque avant d'introduire les faisceaux superposés dans une fibre optique. La diode de superposition et le laser solide sont adaptés pour éclairer un objet à traiter de telle manière que leurs positions d'éclairage absolues et leurs formes d'éclairage sont pratiquement identiques. Par conséquent, il est possible de résoudre le problème de coûts élevés et de consommation de courant élevée d'un appareil laser dû à une faible transformation d'énergie qui est souvent l'inconvénient d'une unité de laser solide à forte émission.

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