Laser device with configurable intensity distribution
AssigneeKoninklijke Philips N.V.
InventorsStephan Gronenborn, Holger Moench
Life of this patent
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Abstract
The present invention relates to a laser device comprising an array of several large area VCSELs (101) and one or several optics (201, 202) designed and arranged to image the active layers of the VCSELs (101) of said array to a working plane (501) such that the laser radiation emitted by the active layers of all VCSELs (101) or of subgroups of VCSELs (101) of the array superimposes in the working plane (501). The proposed laser device allows the generation of a desired intensity distribution in the working plane without the need of an optics specially designed for this intensity distribution or beam profile.
Claims18
A laser device comprising:
- an array of several large area vertical cavity surface emission lasers, each of said lasers comprising an active layer emitting laser radiation;
- at least one optics configured and arranged to image the active layers of the lasers of said array to a working plane such that the laser radiation emitted by the active layers of all lasers or of subgroups of lasers of the array superimposes in the working plane;
- and,
- wherein said array comprises at least a first and a second vertical cavity surface emission laser being individually switchable by a control unit,
- said first laser being configured to emit a laser beam with a first shape of intensity distribution in the near field,
- said second laser being configured to emit a laser beam with a second shape of intensity distribution in the near field different from the first shape,
- such that shaping of a laser beam profile in the working plane is enabled.
A laser device comprising
- an array of several large area vertical cavity surface emission lasers, each of said lasers comprising an active layer emitting laser radiation, wherein said emitted laser radiation is dominated by Fourier modes;
- at least one optics configured and arranged to image the active layers of the lasers of said array to a working plane such that the laser radiation emitted by the active layers of all lasers or of subgroups of lasers of the array superimposes in the working plane;
- and,
- wherein at least some of said lasers are configured to emit laser beams with different shapes of intensity distribution in the near field.
Dependencies are inferred from the claim text.