Shaping a laser beam with a fibre-based device

Details Shaping a laser beam with a fibre-based device Shaping a laser beam with a fibre-based device

G - Physics

02

B

G02B 27/09 (2006.01) H01S 3/10 (2006.01)

Patent

CA 2602862

A fibre-based device and associated method effectively convert a laser beam with an initial intensity distribution of Gaussian shape into a beam with another intensity distribution, which might typically be uniform or ring- shaped although other configurations are possible. The device comprises a single mode fibre with a core in which the beam is guided and a cladding surrounding the core. A component inline with the fibre couples a portion of the guided beam from the core into the cladding for propagation through the cladding toward an output end of the fibre. Interaction between core and cladding propagation modes produces the other intensity distribution at a predetermined distance from the output end of the fibre.

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