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Diffractive laser beam homogenizer including a photo-active material and method of fabricating the same

Patent ·
OSTI ID:1132263
; ;
A method of manufacturing a plurality of diffractive optical elements includes providing a partially transmissive slide, providing a first piece of PTR glass, and directing first UV radiation through the partially transmissive slide to impinge on the first piece of PTR glass. The method also includes exposing predetermined portions of the first piece of PTR glass to the first UV radiation and thermally treating the exposed first piece of PTR glass. The method further includes providing a second piece of PTR glass and directing second UV radiation through the thermally treated first piece of PTR glass to impinge on the second piece of PTR glass. The method additionally includes exposing predetermined portions of the second piece of PTR glass to the second UV radiation, thermally treating the exposed second piece of PTR glass, and repeating providing and processing of the second piece of PTR glass using additional pieces of PTR glass.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344;
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
8,728,719
Application Number:
12/544,161
OSTI ID:
1132263
Country of Publication:
United States
Language:
English

References (6)

Rational design of a diffractive homogenizer for a laser beam journal January 2002
Efficient beamshaper homogenizer design combining diffractive optical elements, microlens array and random phase plate journal January 1999
Diffractive optical elements in photosensitive inorganic glasses
  • Efimov, Oleg M.; Glebov, Leonid B.; Smirnov, Vadim I.
  • International Symposium on Optical Science and Technology, SPIE Proceedings https://doi.org/10.1117/12.446892
conference November 2001
Laser beam shaping by holographic optical elements conference February 2012
Astigmatic gradient-index elements for laser-diode collimation and beam shaping journal January 1995
Apodization technique for fiber grating fabrication with a halftone transmission amplitude mask journal January 2000

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