Optical fibre receiving and laser beam combining unit

Details Optical fibre receiving and laser beam combining unit Optical fibre receiving and laser beam combining unit

1989-05-10

1991-07-09

Ullah, Akm

350 9620, 350174, 350169, G02B 632, G02B 2700, G02B 2710

Patent

active

050299646

ABSTRACT:
A laser beam combining unit combines the output beams of a plurality of high power lasers after the beams have been transmitted along, for example, three optical fibres. The beam combining unit includes a holder arrangement for receiving the ends of the optical fibres, three collimating lenses, and a single focusing lens. The ends of the three optical fibres are located substantially in a common plane and circularly spaced at 120.degree. intervals. The three collimating lenses are also located substantially in a common plane and their axes are circularly spaced at 120.degree. intervals. Each of the collimating lenses is aligned with one of the optical fibres. The laser beams are directed by the collimating lenses, as collimated beams, onto the focusing lens with axes of the individual beams parallel to each other. The beams are focused by the focusing lens to a common point for performing a material processing operation.

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Instrum. & Experim. Tech., vol. 21, No. 3/2 1978 May-Jun., pp. 767-768, "Means for Combining the Light of Several Layers" A. E. Pozdnyakov.
Arata, Challenge to Laser Advanced Materials Processing, Proceeding of LAMP '87 Osaka (May 1987).

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