J4 ›› 2010, Vol. 27 ›› Issue (3): 325-330.

• Nonlinear Optics • Previous Articles     Next Articles

Effect of pump wavelengths on femtosecond pulse compression in photonic crystal fibers

LI Ai-Ping1,2, Ji-Yan-Jun1, WANG An-Quan1   

  1. 1 Department of Physics, Binzhou University, Binzhou 256603, China;
    2 Institute for Theoretical Physics, Binzhou University, Binzhou 256603, China
  • Received:2009-12-14 Revised:2010-02-28 Published:2010-05-28 Online:2010-05-11

Abstract:

A theoretical investigation with the method of split-step Fourier is presented on the nonlinear propagation and pulse compression of a femtosecond laser pulse at the anomalous region in a photonic crystal fiber. The effect of different pump wavelengths on nonlinear propagation and compression of ultra-short pulse is simulated and analyzed. It was concluded that the compression factor and peak power are the best, and the optimum fiber length is the shortest, while the quality factor is proper with the pump wavelength of 1000nm. And the growth ratio of the compression factor is maximal. By using proper pump wavelengths, compression factor, quality factor, peak power can be increased, while the optimum fiber length is decreased.

Key words: nonlinear optics∣photonic crystal fiber∣method of symmetrical split-step Fourier∣pulse compression