科研之友
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摘要
A wavelength tunable laser system mode-locked by nonlinear polarization evolution based on a 3 cm-long homemade Er3+/Yb3+ codoped phosphate fiber has been reported. By simply adjusting the polarization controllers, the central wavelength of the mode-locked spectrum can be tuned over 1537.1-1563.3 nm continuously. Moreover, 264-fs pulse with 3-dB spectral width of 39.6 nm and peak power of 7.8 kW at a 7.55 MHz repetition rate is generated directly from the all-fiber ring cavity.
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