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Femtosecond Pulse Temporal Overlap Estimation and Adjustment in SSFS-Based CARS System
Zhang, Yongning Jiang, Junfeng Wang, Shuang Liu, Kun Ma, Zhe Gu, Gaofei Hui, Rongqing Liu, Tiegen
Zhang, Yongning
Jiang, Junfeng
Wang, Shuang
Liu, Kun
Ma, Zhe
Gu, Gaofei
Hui, Rongqing
Liu, Tiegen
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Abstract
We present and verify a residual-pump-based temporal overlap estimation method in soliton self-frequency shift-based coherent anti-Stokes Raman scattering system. The residual pump light, output by a highly nonlinear photonic crystal fiber, acts as a crucial link between the pump and Stokes pulses during the temporal overlap estimation. The wavelength-dependent optical delay is estimated to be 0.141 ps/nm when the Stokes wavelength is 900 nm ~1050 nm according to the temporal overlap estimation method. The actual measurement result is 0.138 ps/nm based on the nonresonant signal from a microscope slide, which is very close to the estimated result. In addition, the Raman resonant signals of liquid cyclohexane at 2853 cm -1 , 2923 cm -1 and 2938 cm -1 have also been successfully detected at the predicted optical delays 427.27 ps and 428.17 ps.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
Date
2019-09-10
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Institute of Electrical and Electronics Engineers
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This item contains archived web content.
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Zhang_2019.pdf
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Keywords
Fiber nonlinear optics, Optical solitons, Interference, Raman scattering, CARS, GNLSE
Citation
Y. Zhang et al., "Femtosecond Pulse Temporal Overlap Estimation and Adjustment in SSFS-Based CARS System," in IEEE Access, vol. 7, pp. 131317-131325, 2019. doi: 10.1109/ACCESS.2019.2940587