Abstract:
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.
Abstract:
A cooling fan (1) for cooling an electronic device (2) is disclosed. The cooling fan (1) comprises a heat sink (5) thermally connectable to the electronic device (2), the heat sink (5) having a first clearance side (6a, 6b) centered relative to a longitudinal axis (L) of the heat sink (5), and several thermally conductive fan blades (13) arranged in a circle centered on the longitudinal axis (L). The fan blades (13) are rotatable relative to the heat sink (5)about the longitudinal axis (L) by a motor (19) and each fan blade (13) has a second clearance side (14) facing the first clearance side (6a, 6b). A clearance space (18) is provided between the first clearance side (6) and each second clearance side (14),the majority of said clearance spaces(18) having a size of 100 micrometer or less in a direction perpendicular to the first clearance side (6a, 6b) and the corresponding second clearance side (18).
Abstract:
A semiconductor laser system includes a diode laser tile. The diode laser tile includes a mounting fixture having a first side and a second side opposing the first side and an array of semiconductor laser pumps coupled to the first side of the mounting fixture. The semiconductor laser system also includes an electrical pulse generator thermally coupled to the diode bar and a cooling member thermally coupled to the diode bar and the electrical pulse generator.
Abstract:
A cylindrical two-dimensional diode-laser assembly includes fractionally-cylindrical dielectric segments bonded in a circular aperture in a metal heat-sink. Diode laser bars are located in gaps between the segments with light from the diode-lasers directed inwardly. The segments are made by cutting slots in one end of a tube of the dielectric material with the width of the slots corresponding to the width of the gaps and the part of the tube between slots providing the segments. The slotted tube is metallized and the slotted end of the tube is inserted into the heat-sink aperture with an unslotted part of the tube outside the aperture. The slotted part of the tube is bonded in the aperture and the unslotted part of the tube separated from the slotted part leaving the segments bonded in the aperture.
Abstract:
A heat dissipating device (10) and method for dissipating waste heat produced by a solid state device (18), which includes (a) a solid state device (18) and (b) a heat sink for dissipating waste heat produced by the solid state device which includes a base member (14) being in thermal contact with the solid state device (18) and a plurality of elongated heat conducting elements (16) extending outwardly from the base member (14).
Abstract:
A system for heat removal in optical and optoelectronic devices and subassemblies 300, 400, 500, 600 is provided. The system lowers the power consumption of one or more active cooling components 308, 316, 408, 504 within the device or subassembly 300, 400, 500, 600. For any particular application, the system more efficiently removes the heat from the active cooling components 308, 316, 408, 504 by using a heat transfer assembly 310, 404, 506. The heat transfer assembly 310, 404, 506 employs properties like, but not limited to, phase transition change and thermal conductivity to move heat without external power. In some embodiments, the heat transfer assembly 310, 404, 506 can be used to allow the active cooling component 308, 316, 408, 504 to be removed, leaving the heat transfer assembly 310, 404, 506 to remove the heat from the device or subassembly 300, 400, 500, 600.
Abstract:
Various embodiments of a thermal energy transfer apparatus that removes thermal energy from a light-emitting device are described. In one aspect, an apparatus comprises a silicon-based base plate and a silicon-based cover element disposed on the base plate. The base plate includes a recess to receive a light-emitting device therein. The base plate is coated with a first electrically-conductive pattern that forms a first electrode. The base plate is further coated with a second electrically-conductive pattern that is electrically isolated from the first electrically-conductive pattern. The cover element holds the light-emitting device between the base plate and the cover element with at least a portion of a light-emitting surface of the light-emitting device exposed. The cover element is coated with a third electrically-conductive pattern that is in contact with the second electrically-conductive pattern to form a second electrode when the cover element is disposed on the base plate.