Stepped diode laser module with cooling structure

摘要

A laser module has a unitary base including stepped platforms with an offset relative to an adjacent platform, each stepped platform accommodating a laser source with at least a first and a second plurality of stepped platforms, each platform accommodating a cooling channel inside at a predetermined depth below the top surface of the platform to conduct a flow of cooling fluid provided on an inlet, the cooling channel running under a platform having microchannels, the cooling channels being connected to a fluid inlet with an inlet manifold that provides cooling fluid at the inlet and an outlet manifold to dispose the cooling fluid with waste heat at an outlet, the laser module producing in one embodiment no less than 100 Watt of optical power.

主权项

1. A laser module body to be cooled with cooling fluid having a first and a second electrode, comprising:
a unitary ceramic base having a bottom; a plurality of platforms formed in the unitary ceramic base, each one of the plurality of platforms having a width, a length and a height relative to a base plane parallel to the platforms and forming a stepped structure, each platform having a different height relative to the base plane; each platform having a top surface being enabled to hold a laser source and at least one optical component at defined locations on a top surface of the platform; each one of the plurality of ceramic platforms containing a cooling channel running internally along at least part of its length from a first end to a second end at a defined depth under the top surface at least under the defined locations, wherein the cooling channels in the platforms are spatially separated from each other; a fluid inlet and an input manifold connecting the fluid inlet to the first end of each of the cooling channels of the plurality of ceramic platforms to distribute the cooling fluid; and an output manifold connecting the cooling channels from the second end of each of the cooling channels in the plurality of platforms to a fluid outlet that disperses the cooling fluid from the laser module body.