Solid state laser diode light source

Details Solid state laser diode light source Solid state laser diode light source

H - Electricity

01

S

H01S 5/40 (2006.01) A61B 18/24 (2006.01) G02B 6/42 (2006.01) H01S 3/00 (2006.01) H01S 5/00 (2006.01) H01S 3/25 (1990.01)

Patent

CA 2074834

A laser diode light source comprises at least two laser diodes (1, 2). The beams (3, 4) of the diodes (1, 2) are combined to- gether by, for example, a polarising beam combiner (11) and the combined beam (18) is focused by a lens (19) onto an optical cable (20). The beams (3, 4) are also acted on in the long direction of the laser stripes of the diodes (1, 2) by anamorphic beam shaping means (7, 8; 9, 10) to reduce the length of the image formed at the end of fibre (20) by a predetermined factor, chosen such that the numerical aperture of the focused beam (18) in said long direction does not substantially exceed that of the optical fibre (20).

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