Location of Repository

In-situ spatially-resolved thermal and Brillouin diagnosis of a high-power ytterbium-doped fibre laser by Brillouin optical time domain analysis

By Y. Jeong, C. Jáuregui, D.J. Richardson and J. Nilsson

Abstract

An in situ spatially-resolved diagnosis of thermal and Brillouin characteristics of a double-clad ytterbium-doped fibre (YDF) laser operating at 1.09 µm is demonstrated. For this a Brillouin optical time domain analysis technique based on 1.55 µm Brillouin pump and probe beams is utilised. A 2.4 K temperature difference across the YDF laser when it was running with 6.5 W pump power has been measured and resolved. Based on the measured thermal and Brillouin characteristics of it is expected the YDF, that the effective Brillouin gain coefficient would decrease by 20% for 1.09 µm radiation if an 80 K temperature variation is built up across it, as a result of the quantum heating by the pump powe

Topics: QC, TK
Year: 2009
OAI identifier: oai:eprints.soton.ac.uk:78917
Provided by: e-Prints Soton
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://dx.doi.org/10.1049/el:2... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.