We demonstrated a simple diffractive method to map the self-similar structure shown in squared radial coordinate of any set of circularly symmetric fractal plates into self-similar light pulses in the corresponding temporal domain. The space-to-time mapping of the plates was carried out by means of a kinoform diffractive lens under femtosecond illumination. The spatio-temporal characteristics of the fractal pulses obtained in this way were measured by means of a spectral interferometry technique assisted by a fiber optics coupler (STARFISH). Our proposal allows synthesizing suited sequences of focused fractal femtosecond pulses potentially useful for several current applications, such as femtosecond material processing, atomic, and molecular control of chemical processes or generation of nonlinear effects.
© 2012 Optical Society of America
Diffraction and Gratings
Original Manuscript: October 13, 2011
Revised Manuscript: January 10, 2012
Manuscript Accepted: January 18, 2012
Published: March 21, 2012
Omel Mendoza-Yero, Benjamín Alonso, Gladys Mínguez-Vega, Íñigo Juan Sola, Jesús Lancis, and Juan A. Monsoriu, "Synthesis of fractal light pulses by quasi-direct space-to-time pulse shaping," Opt. Lett. 37, 1145-1147 (2012)