Passively Q-switched Fiber Laser
Based on Graphene Saturable Absorber1
L. Q. Zhang*, Z. Zhuo, J. X. Wang, and Y. Z. Wang
School of Information Science and Engineering, Shandong University, Jinan 250100, China
*e-mail: zhangliqiang05@126.com
Received August 28, 2011; in final fom, August 30, 2011; published online December 28, 2011
Abstract—A passively graphene Q-switched Erbium doped fiber laser around 1.5 
m is demonstrated in this
paper. The graphene saturable absorber was fabricated by sandwiching a thin graphene film produced via chem-
ical vapor deposition between two FC fiber connectors. Stable pulse trains were obtained with the pulse repe-
tition rate varying between 34.72 and 53.2 kHz and the average output power ranging from 0.504 mW to 0.926
mW. The achieved shortest pulse duration and highest pulse energy were 3.2 s and 17.41 nJ, respectively.
DOI: 10.1134/S1054660X12020284
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