Abstract.
A time–frequency analysis of chirped femtosecond pulses using the Wigner distribution function is presented. We graphically obtain the instantaneous carrier frequency and the group delay of the chirped pulse using a peak-detection method. After confirming that the instantaneous carrier frequency of an ultra-short laser pulse defined by the derivative of the temporal phase is not generally supported by the optical frequency, we use the Wigner distribution to decompose the optical frequencies that mainly contribute to the pulse at a certain time. For this purpose, a chirped pulse with a double-peaked spectrum and one whose phase is distorted by third-order dispersion are analyzed with the peak-detection method. The Wigner distribution along with this graphical method successfully resolves the multicomponent frequencies that cannot be seen in the standard Fourier analysis.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Received: 18 September 2001 / Revised version: 12 November 2001 / Published online: 20 June 2002
Rights and permissions
About this article
Cite this article
Hong, KH., Kim, JH., Kang, Y. et al. Time–frequency analysis of chirped femtosecond pulses using Wigner distribution function. Appl Phys B 74 (Suppl 1), s231–s236 (2002). https://doi.org/10.1007/s00340-002-0889-5
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00340-002-0889-5