## Temporal focusing by use of composite X waves

JOSA A, Vol. 20, Issue 8, pp. 1658-1665 (2003)

http://dx.doi.org/10.1364/JOSAA.20.001658

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### Abstract

It is shown that highly focused pulses can be shaped by exciting a finite aperture with a spread-out pulse train of X waves. The basis of the proposed scheme is that the peaks of X waves, characterized by different apex angles, travel at different velocities. This property allows one to vary the temporal starting points of the initial excitations of a sequence of X waves so that all their peaks meet at a chosen focusing point. It is demonstrated that this simple criterion can be effective in producing a highly focused, composite X-wave pulse that exhibits a slower decay behavior than the individual X-wave components used in synthesizing it.

© 2003 Optical Society of America

**OCIS Codes**

(320.5540) Ultrafast optics : Pulse shaping

(320.5550) Ultrafast optics : Pulses

**Citation**

Amr M. Shaarawi, Ioannis M. Besieris, and Tarek M. Said, "Temporal focusing by use of composite X waves," J. Opt. Soc. Am. A **20**, 1658-1665 (2003)

http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-20-8-1658

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