Leonardo Electronics US Inc.

Connor L Magness

Jason Helmrich

Prabhuram Thiagarajan

An optical beam homogenizer includes a first hexagonal microlens array having a plurality of hexagonal lenslets. Each lenslet has a hexagonal clear aperture. A second hexagonal microlens array is spaced away from the first hexagonal microlens array at a focal length of the first hexagonal microlens array and has a plurality of hexagonal lenslets. Each lenslet in the second hexagonal microlens array has a non-hexagonal clear aperture.

Asymmetric input intensity hexagonal homogenizer

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.

Coherent beam coupler

A divergence reshaping apparatus for laser diodes having a fast axis and a slow axis includes a fast axis collimator element having positive optical power in the fast axis and no optical power in the slow axis. A slow axis magnifier element has no optical power in the fast axis and positive optical power in the slow axis. An objective element has positive optical power in the fast axis and no optical power in the slow axis. A slow axis collimator element has negative optical power in the fast axis and positive optical power in the slow axis. Every element is optically aligned down an optical axis, and wherein a beam traveling through every element is collimated, compressed and shifted in the fast axis and expanded and collimated in the slow axis.

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Tucson, AZ, United States of America

Connor L Magness