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5 March 2018 Research on spectrum broadening covering visible light of a fiber femtosecond optical frequency comb for absolute frequency measurement
Shuai Xing, Tengfei Wu, Shuyi Li, Chuanqing Xia, Jibo Han, Lei Zhang, Chunbo Zhao
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Proceedings Volume 10710, Young Scientists Forum 2017; 107100S (2018) https://doi.org/10.1117/12.2314723
Event: Young Scientists Forum 2017, 2017, Shanghai, China
Abstract
As a bridge connecting microwave frequency and optical frequency, femtosecond laser has important significance in optical frequency measurement. Compared with the traditional Ti-sapphire femtosecond optical frequency comb, with the advantages of compact structure, strong anti-interference ability and low cost, the fiber femtosecond optical frequency comb has a wider application prospect. An experiment of spectrum broadening in a highly nonlinear photonic crystal fiber pumped by an Er-fiber mode-locked femtosecond laser is studied in this paper. Based on optical amplification and frequency doubling, the central wavelength of the output spectrum is 780nm and the average power is 232mW. With the femtosecond pulses coupled into two different photonic crystal fibers, the coverage of visible spectrum is up to 500nm-960nm. The spectral shape and width can be optimized by changing the polarization state for satisfying the requirments of different optical frequencies measurement.
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Shuai Xing, Tengfei Wu, Shuyi Li, Chuanqing Xia, Jibo Han, Lei Zhang, and Chunbo Zhao "Research on spectrum broadening covering visible light of a fiber femtosecond optical frequency comb for absolute frequency measurement", Proc. SPIE 10710, Young Scientists Forum 2017, 107100S (5 March 2018); https://doi.org/10.1117/12.2314723
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KEYWORDS
Femtosecond phenomena
Frequency combs
Visible radiation
Atomic clocks
Data acquisition
Polarization
Teeth
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