Abstract
We demonstrated a passively mode-locked Er-doped fiber laser by a high-efficiency Bismuth Telluride (Bi2Te3) as passive saturable absorber. The Bi2Te3 thin film was grown by chemical vapor deposition (CVD). The maximum average output power and pulse energy were as high as 40.74 mW and 23.9 nJ under the pump power of 659 mW, which are much higher than the results obtained previously. The signal to noise ratio was observed to be more than 60 dB, which indicates the stability of the generated pulse. Our results proved that CVD-Bi2Te3 was an excellent candidate for demonstrating large-energy pulse operations on mode-locked Er-doped fiber laser.
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