We discuss exact solutions of Maxwell’s equations that describe the evolution of single-cycle electromagnetic pulses. The solutions are applied to recent observations of the diffraction transformation of terahertz pulses. In particular, we elucidate the role of the Gouy shift in the temporal reshaping and polarity reversals of single-cycle terahertz pulses.
© 1998 Optical Society of America
Simin Feng, Herbert G. Winful, and Robert W. Hellwarth, "Gouy shift and temporal reshaping of focused single-cycle electromagnetic pulses," Opt. Lett. 23, 385-387 (1998)