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Tm-doped fiber lasers, operating in the 2 μm eye-safe region (the absorbable band of human tissues) [1], have potential applications in molecular spectroscopy and medicine [1], where tuning the laser operating wavelength is highly desirable [1]. Tunable multiwavelength mode-locked fiber lasers have been widely reported in the 1 and 1.5 μm regions [2, 3]. Ref. [4] studied the tunability of switchable...
Ultrafast fiber lasers with broad spectral coverage are in great demand for a variety of applications, such as spectroscopy, and biomedical diagnosis. Graphene is an ideal ultrawide-band saturable absorber. We report broadband (up to ∼1000 nm) ultrafast pulse generation from three fiber lasers mode-locked by a single graphene saturable absorber device. The mode-locked pulses were based on Yb-, Er-...
We report passive mode locking of a soliton erbium-doped fiber laser based on graphene saturable absorber at repetition rate continuously scalable up to 500 MHz. The supermodes are suppressed by 50 dB at 32nd harmonic.
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