Patent ID: 8518814

Claim:
A method of fabricating a stacked high-density laser diode array, the method comprising: fabricating a plurality of laser diode dies on a semiconductor wafer having opposite surfaces; applying a solder layer on one of the surfaces of the wafer; cleaving the laser diode dies into individual laser diode bars, each of the laser diode bars having a solder layer; placing a plurality of the individual laser diode bars in a stack, wherein each of the individual laser diode bars are in contact with the solder layer of at least one adjacent individual bar; placing the plurality of individual laser diode bars in a vacuum chamber; and while in the vacuum chamber, (i) attaching the bars together through a solder reflow process so as to form the laser diode array, and (ii) applying a reflection coating and an anti-reflection coating to respective opposing facets of the laser diode bars.