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Proceedings Paper

Ultra-narrow linewidth Brillouin-erbium fiber laser pumped by distributed feedback fiber laser
Author(s): Haifeng Qi; Zhiqiang Song; Weitao Wang; Jian Guo; Jiasheng Ni; Chang Wang; Gangding Peng
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Paper Abstract

An ultra-narrow linewidth fiber laser in a Brillouin ring cavity structure pumped with a distributed feedback fiber laser is presented. A total cavity length about 10m is constructed to satisfy the single longitudinal mode working condition. As a part of the ring cavity, a 3m-long Erbium doped fiber pumped with a 980nm laser diode provides an additional linear gain for intra-cavity Brillouin laser. After an intra-cavity polarization control, a single longitudinal mode Brillouin laser with an unique polarization is achieved and its linewidth is measured and deduced to be narrower than 100Hz. The threshold for single longitudinal mode operation is about 20mW distributed feedback fiber laser and 50mW 980nm pump. A maximum laser output power of over 15mW can be obtained for a maximum 980nm pump power of 250mW.

Paper Details

Date Published: 10 May 2019
PDF: 5 pages
Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 110681X (10 May 2019); doi: 10.1117/12.2524644
Show Author Affiliations
Haifeng Qi, Qilu Univ. of Technology (China)
Zhiqiang Song, Qilu Univ. of Technology (China)
Weitao Wang, Qilu Univ. of Technology (China)
Jian Guo, Qilu Univ. of Technology (China)
Jiasheng Ni, Qilu Univ. of Technology (China)
Chang Wang, Qilu Univ. of Technology (China)
Gangding Peng, Qilu Univ. of Technology (China)
The Univ. of New South Wales (Australia)

Published in SPIE Proceedings Vol. 11068:
Second Symposium on Novel Technology of X-Ray Imaging
Yangchao Tian; Tiqiao Xiao; Peng Liu, Editor(s)

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