Generation of few-cycle laser pulses:Comparison between atomic and molecular gases in a hollow-core fiber |
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Institution: | 1.Department of Physics, Shanghai University, Shanghai 200444, China;2.State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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Abstract: | We numerically study the pulse compression approaches based on atomic or molecular gases in a hollow-core fiber.From the perspective of self-phase modulation(SPM), we give the extensive study of the SPM influence on a probe pulse with molecular phase modulation(MPM) effect. By comparing the two compression methods, we summarize their advantages and drawbacks to obtain the few-cycle pulses with micro- or millijoule energies. It is also shown that the double pump-probe approach can be used as a tunable dual-color source by adjusting the time delay between pump and probe pulses to proper values. |
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Keywords: | hollow-core fiber phase modulation pulses compression few-cycle pulses |
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