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Proceedings Paper

Spatial filtering of IR laser diodes by holographic technique
Author(s): Patrick Pilot; Tigran V. Galstian
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Paper Abstract

Several methods are available for collimating and circularizing beams for laser diodes. However, most of them make use of expensive equipment. In the present paper, a method involving a holographic polymer-dispersed liquid crystal DOE is used to circularize and collimate a beam emerging from a low cost infrared (850 nm) laser diode. Different characteristics of the recorded hologram are presented, such as angular and position tolerance. The material's shrinkage is also investigated in the present work.

Paper Details

Date Published: 15 December 2000
PDF: 8 pages
Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406383
Show Author Affiliations
Patrick Pilot, Univ. Laval (Canada)
Tigran V. Galstian, Univ. Laval (Canada)


Published in SPIE Proceedings Vol. 4087:
Applications of Photonic Technology 4
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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