Abstract: A coherent beam coupled laser diode array includes an array of laser diodes. Each diode emits a beam propagating along a beam path. An array of collimation optics is included. Each of the collimation optics collimates one beam. A first lenslet array is included. Each lenslet refracts a portion of one beam and a portion of a different beam from the array. A partially reflecting mirror is included. A first portion of each beam propagates through the partially reflecting mirror and a second portion of each beam is reflected back toward the first lenslet array. The second portion of each beam reflected propagates back through the first lenslet array and the collimation optics and into one of the diodes in the array of laser diodes, thereby creating an optical cross coupling. A second lenslet array collimates each beam propagating through each lenslet to form a single laser beam.

Abstract: A laser diode apparatus includes a laser diode array having an emission surface and a mounting surface. A heatsink is in thermal communication with the laser diode array at the mounting surface. The heatsink extends perpendicularly away from at least one edge of the emission surface. Positive and negative electrical terminal blocks are in mechanical communication with the heatsink opposite the laser diode array. Electrical foils are in electrical communication with the laser diode array and the positive and negative terminals. The electrical foils extend perpendicularly away from the emission surface. The positive and negative electrical terminal blocks are electrically isolated from the heatsink. A cross-sectional footprint of the heatsink, positive and negative electrical terminal blocks, and electrical foils is not larger than 120% of a cross-sectional footprint of the laser diode array.