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Optical Engineering

Fiber optic high-quality Nd:YAG beam delivery for materials processing
Author(s): Duncan P. Hand; Daoning Su; Mohammed Naeem; Julian D. C. Jones
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Paper Abstract

Optical fibers of 50-µm core diameter are investigated for high-quality beam delivery of moderate power (30 W cw) Nd:YAG laser light. The fiber output near-field profile is important for materials processing applications, but is dependent on the modal distribution within the fiber, together with any intermodal interference. Launch optics design, mode-coupling, and modulation techniques are investigated as methods of controlling this beam profile, together with any associated beam quality (M2) changes. As an example application, high-precision, small kerfwidth cutting of stainless steel is demonstrated.

Paper Details

Date Published: 1 February 1996
PDF: 5 pages
Opt. Eng. 35(2) doi: 10.1117/1.600923
Published in: Optical Engineering Volume 35, Issue 2
Show Author Affiliations
Duncan P. Hand, Heriot-Watt Univ. (United Kingdom)
Daoning Su, Heriot-Watt Univ. (United Kingdom)
Mohammed Naeem, Lumonics Ltd. (United Kingdom)
Julian D. C. Jones, Heriot-Watt Univ. (United Kingdom)

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