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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 25 — Dec. 15, 2003
  • pp: 3346–3351

Highly sensitive beam quality measurements on large-mode-area fiber amplifiers

P. Weßels and C. Fallnich  »View Author Affiliations


Optics Express, Vol. 11, Issue 25, pp. 3346-3351 (2003)
http://dx.doi.org/10.1364/OE.11.003346


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Abstract

The beam quality of large-mode-area fiber amplifiers was investigated at the 10 W power level using a tunable ring cavity, that is also used in the laboratory system of GEO600 as a pre-mode-cleaner for mode filtering. More than 98% of the overall output power were contained within the polarized (200:1) TEM00 mode with an appropriate choice of coiling diameter. With the high sensitivity ring cavity analysis, the beam quality improvement caused by decreasing the coiling diameter was verified, while this could not be seen within conventional M2-measurements. The results are compared with the properties of single-mode fibers.

© 2003 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(330.6100) Vision, color, and visual optics : Spatial discrimination

ToC Category:
Research Papers

History
Original Manuscript: October 30, 2003
Revised Manuscript: November 19, 2003
Published: December 15, 2003

Citation
Peter Weßels and Carsten Fallnich, "Highly sensitive beam quality measurements on large-mode-area fiber amplifiers," Opt. Express 11, 3346-3351 (2003)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-11-25-3346


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References

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