Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Low photodarkening single cladding ytterbium fibre amplifier

[+] Author Affiliations
Bertrand Morasse, Stéphane Chatigny, Éric Gagnon, Carl Hovington, J-Philippe Martin, J-Philippe de Sandro

CorActive High-Tech Inc. (Canada)

Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 64530H (February 20, 2007); doi:10.1117/12.700529
Text Size: A A A
From Conference Volume 6453

  • Fiber Lasers IV: Technology, Systems, and Applications
  • Donald J. Harter; Andreas Tünnermann; Jes Broeng; Clifford Headley III
  • San Jose, CA | January 20, 2007

abstract

A single cladding ytterbium doped fibre amplifier pumped at 980 nm that exhibits negligible amount of photodarkening over a long period of time is demonstrated. The output power as a function of time decreased by a very small factor compared to standard single mode ytterbium fibres. To achieve this photodarkening resistant amplifier, a special ytterbium doped fibre has been developed. Codoping with aluminium or other rare-earth such as erbium is shown to decrease the multi-excitation of ytterbium clusters and thus lower photodarkening. Photodarkening was characterized by comparing the amount of excess loss created by core pumping single cladding fibres at high intensity at 980 nm. Photodarkening was found to be directly proportional to the excitation of the ytterbium ions by comparing different pumping scheme and pump wavelength. Core pumping of a single cladding ytterbium doped fibre amplifier at 980 nm represents the worst case scenario for photodarkening. Engineering ytterbium fibres for low photodarkening is therefore critical in pulsed amplification where short length of fibre with high doping level is required as demonstrated with 6 μm core ytterbium fibre amplifier pumped in the core or in the cladding. Photodarkening was correlated to clustering from cooperative luminescence measurement at 500 nm produced by ytterbium clusters that would emit UV radiation under strong pumping.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Bertrand Morasse ; Stéphane Chatigny ; Éric Gagnon ; Carl Hovington ; J-Philippe Martin, et al.
"Low photodarkening single cladding ytterbium fibre amplifier", Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 64530H (February 20, 2007); doi:10.1117/12.700529; http://dx.doi.org/10.1117/12.700529


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.