METHOD OF ASSEMBLING LASER STRUCTURES ON HEAT-REMOVING BASE MADE FROM BORON NITRIDE CERAMIC

摘要

FIELD: physics. ^ SUBSTANCE: method of assembling laser diode structures (active elements) on a heat-removing base made from boron nitride ceramic involves depositing onto the surface of the heat-removing base a series of metal layers of at least a metal-coating layer and a solder layer, putting the active element onto the metal layer, aligning it relative the base, soldering it while heating in a reducing medium with or without a mechanical load on the element and its subsequent cooling. According to the invention, the first metal-coating layer with thickness of 0.1-0.2 mcm is chemically deposited onto the surface of the heat-removing base by depositing nickel metal from a cured electrolyte with the following ratio of components, in wt %: NiCl26H2O - 45-55; NaH2PO2H2O - 9-13; (NH4)HC6H5O7 - 60-70; NH4Cl - 45-55. The SnPb (or In) solder layer is deposited through vacuum coating and thickness of the solder layer is selected depending on the size of the laser structures. ^ EFFECT: simpler assembling process and assembling reproducibility, increased reliability and quality of the contact joint, improved temperature-compensation parametres, and possibility of replacing precious metals used in assembling laser structures on heat sinks. ^ 1 ex