Abstract
We experimentally investigated Ag nanoplates as saturable absorber for Q-switched pulse generation in an Yb-doped fiber laser. The pulse train repetition rate increases with the increase of the pump power. At the maximum pump power of 600 mW, the maximum repetition rate and average output power are 184.8 kHz and 10.77 mW, respectively, corresponding to single pulse energy of 58.3 nJ. To the best of our knowledge, it is the first demonstration of the passively Q-switched fiber laser utilizing the material of Ag nanoparticles at the wavelength of 1-μm. Our investigations demonstrate the flexibility of our solution-processed Ag nanoplates-based saturable absorber, making it a promising candidate for a variety of stable and low-cost ultrafast lasers.
Highlights
In the laser cavity, a piece of ∼1.8 m moderately ytterbium-doped fiber (Nufern SM-YSF-LO) serves as the gain medium, and is backward pumped by a 980 nm laser diode (LD) through a 980/1060 nm wavelength division multiplexer (WDM)
Experimental setup and results Optical deposition procedure is implemented to transfer the Ag nanoplates onto the fiber core area through the thermal effect
Two polarization controllers (PCs) as well as an 8 nm band pass filter centered at 1030 nm, are employed to optimize the Q-switching pulse operation
Summary
A piece of ∼1.8 m moderately ytterbium-doped fiber (Nufern SM-YSF-LO) serves as the gain medium, and is backward pumped by a 980 nm laser diode (LD) through a 980/1060 nm wavelength division multiplexer (WDM). Experimental setup and results Optical deposition procedure is implemented to transfer the Ag nanoplates onto the fiber core area through the thermal effect.
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