Array of diffraction limited lasers and method of aligning same

Details Array of diffraction limited lasers and method of aligning same Array of diffraction limited lasers and method of aligning same

1991-12-06

1993-05-18

Healy, Brian

Coherent light generators

Particular active media

Semiconductor

372 43, 372 36, 372101, 372102, 372108, 359569, 359572, 359652, 359653, 359900, H01S 319, G02B 518

Patent

active

052127079

ABSTRACT:
A one-dimensional semiconductor laser array assembly typically comprising a one-dimensional semiconductor laser array, a heatsink upon which the laser array is bonded, and a lens assembly. The one-dimensional semiconductor laser array consists of a plurality of emitters with each emitter electrically connected in parallel to a power supply. The bonding agent, typically silver epoxy, must be of a uniform thickness so that the laser array is aligned properly upon the heatsink. The lens assembly is typically comprised of a refractive lens, typically of a bi-convex design, and a one-dimensional array of binary optical elements. The one-dimensional array of binary optical elements is designed such that each element has a front surface having a binary optic diffractive element etched thereon. The refractive lens and the one-dimensional array of binary optical elements are aligned and held in place by means of ears protruding from the heatsink. There is also provided by this invention a two-dimensional semiconductor laser array assembly consisting of a plurality of one-dimensional semiconductor laser array assemblies positioned substantially parallel to one another, within a clamping fixture, with the lens assembly of each one-dimensional laser array assembly positioned such that the output of each one-dimensional laser array is focused to the same point in the far field to provide a high intensity output and method for so aligning the two-dimensional laser array assembly. A lens assembly is also provided for focusing the output at a variable point.

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patent: 5101454 (1992-03-01), Blonder et al.
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patent: 5164955 (1992-11-01), Meyers

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