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Proceedings Paper

Maximum uptime and minimum focus shift in high-power 1μm laser beam delivery
Author(s): T. Kugler
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Paper Abstract

High Power (3kW to 20kW) 1um lasers can show problems related to thermal focus shift, optical contamination, and subsequent optical damage if not designed and maintained properly in production. Other issues are related to correct optical assembly and optic orientation in the beam delivery system. Even low to medium power lasers can have problems where the power density on the optics becomes excessive, especially where single mode lasers are employed. This paper discusses methods and hardware developed to minimize thermal focus shift in medium and high power beam delivery by first analyzing the standard issues and measuring improvements by the use of proper designs with reflective and transmissive systems by employing seals, active purge, optimized layouts, and direct-cooled optics.

Paper Details

Date Published: 6 February 2012
PDF: 9 pages
Proc. SPIE 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications, 82390X (6 February 2012); doi: 10.1117/12.908830
Show Author Affiliations
T. Kugler, Laser Mechanisms, Inc. (United States)


Published in SPIE Proceedings Vol. 8239:
High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications
Eckhard Beyer; Timothy Morris, Editor(s)

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