| 摘要 |
The invention discloses a high power laser diode comprising a plurality of laser light emitters ( 2 ) and a plurality of light collimating means ( 33 ), wherein each of the laser light emitters ( 2 ) defines, in a direction perpendicular to a direction of propagation ( 32 ) of an output laser beam, a fast axis (y) and a slow axis (x), and wherein each of the light collimating means is associated with a laser light emitter and configured for collimating the output laser beam at least in a fast axis (y) direction. In order to enable a simple and cost-efficient assembly of the diode laser with collimating means, having a layered structure consisting of a plurality of plane-parallel substrates. For this purpose, the diode laser comprises planar substrate means ( 10, 30 ) which serves to precisely define a distance between a respective laser light emitter ( 2 ) and an associated light collimating means to the order of one or several millimetres and to support the collimating means ( 33 ) such that the optical axis of said laser light emitters are parallel to each other and for defining a precise location of emitters on the planar substrate ( 10 ), preferably at predetermined distance in fast axis direction between said laser light emitters. The collimating means is an array or multiple single of micro-optical lenses having a rear side which is bonded to the upper surface of the planar spacer means. The submounts of the light emitters ( 2 ) are mounted to the planar substrate means ( 10, 30 ) and to a heatsink ( 6 ).
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