N. N. Yea, b, Z. Q. Pana, F. Yanga, b, Q. Yea, H. W. Caia, *, and R. H. Qua
a Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine
Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
b Graduate School of Chinese Academy of Sciences, Beijing 100039, China
*e-mail: hwcai@siom.ac.cn
Received February 20, 2012; published online June 12, 2012
Abstract—A compact short-cavity high-repetition-frequency mode-locked fiber laser configured with
Er3+/Yb3+ highly co-doped phosphate glass fiber and a graphene optical deposited film as saturable absorber is
proposed and analyzed experimentally. The laser operates in stable mode-locked regime with fundamental rep-
etition rate of 7.02 GHz. The output power is measured to be 1.2 mW with pump power around 80 mW, and the
optical spectrum is centered about 1533.768 nm with mode spacing of 0.056 nm. As the pump power increases,
the laser operates in multi-wavelength mode-locking emission state with the same longitude mode spacing.
Moreover, the measure results show that different wavelength emission operates in different polarization states.
10.1134/S1054660X1207016X
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