Rapid decay of type-II femtosecond laser inscribed gratings within Q-switched Yb3+-doped fiber lasers

M. L. Åslund, N. Jovanovic, J. Canning, S. D. Jackson, G. D. Marshall, A. Fuerbach, M. J. Withford

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
11 Downloads (Pure)


Fiber lasers that utilize femtosecond (fs) laser inscribed type-II fiber Bragg gratings within the active medium are known to produce stable output powers in excess of 100 W during continuous-wave operation. However, here we show that the gratings undergo rapid annealing when employed as high reflectors in pulsed Q -switched fiber lasers operating at average power levels of less than 0.5 W. We demonstrate that a combination of a high population inversion and a high optical field seems to drive this annealing process and point out similarities to photodarkening.

Original languageEnglish
Article number5404741
Pages (from-to)504-506
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number7
Publication statusPublished - 1 Apr 2010

Bibliographical note

Copyright [2010] IEEE. Reprinted from IEEE photonics technology letters, Volume 22, Issue 7, 504-506. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


Dive into the research topics of 'Rapid decay of type-II femtosecond laser inscribed gratings within Q-switched Yb3+-doped fiber lasers'. Together they form a unique fingerprint.

Cite this