Selecting a high-power fiber-optic laser beam delivery system

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Multimode optical fibers enable efficient flexible laser beam delivery but at a loss in the quality of the delivered beam. The fiber-optic beam delivery system effectiveness is strengthened by the optimal selection of its components not only for minimizing beam quality degradation but also for robustness. Smaller fibers tend to produce less degradation to beam quality but the minimum usable fiber size is limited by the quality of the laser beam, focusing optic, and the numerical aperture of the fiber. Selection of appropriate fiber type is important because the characteristics of the output beam enhance or degrade the utility of ... continued below

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10 p.

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Hunter, B.V.; Leong, K.H.; Miller, C.B.; Golden, J.F.; Glesias, R.D. & Laverty, P.J. October 1, 1996.

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Description

Multimode optical fibers enable efficient flexible laser beam delivery but at a loss in the quality of the delivered beam. The fiber-optic beam delivery system effectiveness is strengthened by the optimal selection of its components not only for minimizing beam quality degradation but also for robustness. Smaller fibers tend to produce less degradation to beam quality but the minimum usable fiber size is limited by the quality of the laser beam, focusing optic, and the numerical aperture of the fiber. Selection of appropriate fiber type is important because the characteristics of the output beam enhance or degrade the utility of the fiber-optic-delivered beam for different applications. The other components of the beam delivery system also impact performance. High-power handling requires high- quality fiber end-face finish and special connectors that can withstand back-reflections. Recent developments in optical materials allow manufacture of very low aberration optics useful for short focal length lenses in output optics. Harnessing the power of a high- power laser requires that knowledgeable and prudent choices be made when selecting the laser and its beam delivery system. We will focus on issues relevant to understanding and specifying a fiber-optic beam delivery system and provide guidelines for specifying a system. Data obtained with high power Nd:YAG lasers will be used as examples.

Physical Description

10 p.

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OSTI as DE96014386

Source

  • ICALEO `96: 15. international congress on applications of lasers and electro-optics, Detroit, MI (United States), 14-17 Oct 1996

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  • Other: DE96014386
  • Report No.: ANL/TD/CP--90093
  • Report No.: CONF-961073--1
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 390413
  • Archival Resource Key: ark:/67531/metadc686562

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 14, 2015, 6:47 p.m.

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Hunter, B.V.; Leong, K.H.; Miller, C.B.; Golden, J.F.; Glesias, R.D. & Laverty, P.J. Selecting a high-power fiber-optic laser beam delivery system, article, October 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc686562/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.