The interference patterns produced by Gaussian-shaped broad-bandwidth femtosecond pulsed laser sources are derived. The interference pattern contains both spatial and temporal properties of laser beam. Interference intensity dependent on the bandwidth of femtosecond laser are given. We demonstrate experimentally both the spatial and the temporal coherence properties of a Ti:sapphire femtosecond pulse laser, as well as its power spectrum by using a pinhole pair.
© 2005 Chinese Optics Letters
(030.1640) Coherence and statistical optics : Coherence
(070.2590) Fourier optics and signal processing : ABCD transforms
(140.7090) Lasers and laser optics : Ultrafast lasers
(320.7090) Ultrafast optics : Ultrafast lasers
Wenjun Liu, Changhe Zhou, Yanyan Zhang, and Wei Wang, "Coherence measurement of a Ti:sapphire femtosecond pulsed laser," Chin. Opt. Lett. 3, S115-S116 (2005)