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5 March 2018 A stabilized optical frequency comb based on an Er-doped fiber femtosecond laser
Chuanqing Xia; Tengfei Wu; Chunbo Zhao; Shuai Xing
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Proceedings Volume 10710, Young Scientists Forum 2017; 107103M (2018) https://doi.org/10.1117/12.2317514
Event: Young Scientists Forum 2017, 2017, Shanghai, China
Abstract
An optical frequency comb based on a 250 MHz home-made Er-doped fiber femtosecond laser is presented in this paper. The Er-doped fiber laser has a ring cavity and operates mode-locked in femtosecond regime with the technique of nonlinear polarization rotation. The pulse duration is 118 fs and the spectral width is 30 nm. A part of the femtosecond laser is amplified in Er-doped fiber amplifier before propagating through a piece of highly nonlinear fiber for expanding the spectrum. The carrier-envelope offset frequency of the comb which has a signal-to-noise ratio more than 35 dB is extracted by means of f-2f beating. It demonstrates that both carrier-envelope offset frequency and repetition frequency keep phase locked to a Rubidium atomic clock simultaneously for 2 hours. The frequency stabilized fiber combs will be increasingly applied in optical metrology, attosecond pulse generation, and absolute distance measurement.
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Chuanqing Xia, Tengfei Wu, Chunbo Zhao, and Shuai Xing "A stabilized optical frequency comb based on an Er-doped fiber femtosecond laser", Proc. SPIE 10710, Young Scientists Forum 2017, 107103M (5 March 2018); https://doi.org/10.1117/12.2317514
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