Am. Shaarawi et al., GENERATION OF APPROXIMATE FOCUS-WAVE-MODE PULSES FROM WIDE-BAND DYNAMIC GAUSSIAN APERTURES, Journal of the Optical Society of America. A, Optics, image science,and vision., 12(9), 1995, pp. 1954-1964
It is demonstrated that an approximation to the focus-wave-mode field
can be generated from a dynamic Gaussian aperture. A source of this ty
pe is characterized by the time variation of its effective radius. The
performance of such an aperture is studied in detail; it is demonstra
ted that the dynamic aperture shows a great enhancement over the corre
sponding static one. The types of source investigated provide an effic
ient scheme to launch narrow Gaussian pulses from extended apertures.