Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Characterization of photodarkening processes in Yb doped fibers

[+] Author Affiliations
S. Jetschke, U. Röpke, S. Unger, J. Kirchhof

Institute of Photonic Technology (Germany)

Proc. SPIE 7195, Fiber Lasers VI: Technology, Systems, and Applications, 71952B (February 19, 2009); doi:10.1117/12.807544
Text Size: A A A
From Conference Volume 7195

  • Fiber Lasers VI: Technology, Systems, and Applications
  • Denis V. Gapontsev; Dahv A. Kliner; Jay W. Dawson; Kanishka Tankala
  • San Jose, CA | January 24, 2009

abstract

The time-dependence of photodarkening (PD) in Yb-doped fibers is commonly fitted with a stretched exponential function to determine typical parameters of the process. But, the experimental conditions to obtain consistent results from the comparison of PD for different pump powers, various concentrations of the dopants, or fibers from different manufacturers are not adequately regarded up to now. We discuss the requirements concerning the measurement method as well as the impact of the initial state of the fiber under test. Further on, the experimental results of PD characteristics are discussed in the framework of a kinetic model of the observed processes. The discussion of the measurable PD loss is expanded by introducing the concept of the "PD state" that defines the PD loss as a weighted mean and takes effect on the further evolution of the process. In this way, the basis of fiber characterization and the understanding of the PD kinetics will be improved.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

S. Jetschke ; U. Röpke ; S. Unger and J. Kirchhof
"Characterization of photodarkening processes in Yb doped fibers", Proc. SPIE 7195, Fiber Lasers VI: Technology, Systems, and Applications, 71952B (February 19, 2009); doi:10.1117/12.807544; http://dx.doi.org/10.1117/12.807544


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

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.