Study on self-frequency-shift of femtosecond pulse in nonlinear dispersion medium using time-resolved cross-phase modulation method |
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Authors: | Yingqiao Zhao Heyuan Zhu Jianhua Liu Diechi Sun Fuming Li |
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Institution: | (1) State Key Joint Lab for Modification by Triple Beams, Department of Physics, Fudan University, 200433 Shanghai, China |
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Abstract: | A time-resolved cross-phase modulation method combined with a modified nonlinear Schrodinger equation is used to study the
effects of nonlinear response time on the propagation of ultrashort pulses in nonlinear dispersion media. Evolution of cross-phase
modulation spectrum with the different time delay between the probe pulse and pump pulse is simulated using split-step Fourier
method. It is shown that both normal self-frequency-shift-red-shift and abnormal self-frequency-shift-blue-shift can occur
in the frequency domain for the probe pulse, and a satisfactory theoretical interpretation is given. |
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Keywords: | abnormal self-frequency-shift nonlinear dispersion cross-phase modulation spectrum cross-phase modulation spectrum |
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