An experiment was performed in which a single ring from a Fabry–Perot transmission fringe pattern was used to create a nondiffracting beam. The transverse and axial intensity distributions of this beam were measured and found to be in good agreement with previously existing and newly derived theoretical expressions. The diffraction-free range was found from calculation to be proportional to the cavity finesse and length, and the central-spot radius of the beam was theoretically shown to be proportional to the square root of the wavelength and cavity length.
© 1992 Optical Society of America
Original Manuscript: April 1, 1991
Revised Manuscript: September 9, 1991
Manuscript Accepted: October 15, 1991
Published: February 1, 1992
A. J. Cox and Dean C. Dibble, "Nondiffracting beam from a spatially filtered Fabry–Perot resonator," J. Opt. Soc. Am. A 9, 282-286 (1992)