We numerically investigate the spatiotemporal structure of Bessel beams generated with spatial light modulators (SLMs). Grating-like phase masks enable the spatial filtering of undesired diffraction orders produced by SLMs. Pulse front tilt and temporal broadening effects are investigated. In addition, we explore the influence of phase wrapping and show that the spatiotemporal structure of SLM-generated femtosecond Bessel beams is similar to Bessel X-pulses at short propagation distance and to subluminal pulsed Bessel beams at long propagation distance.
© 2014 Optical Society of America
Original Manuscript: December 10, 2013
Revised Manuscript: February 13, 2014
Manuscript Accepted: February 17, 2014
Published: March 20, 2014
L. Froehly, M. Jacquot, P. A. Lacourt, J. M. Dudley, and F. Courvoisier, "Spatiotemporal structure of femtosecond Bessel beams from spatial light modulators," J. Opt. Soc. Am. A 31, 790-793 (2014)