An exact expression is derived for the Strehl ratio as a function of the minimum root-mean-square aberration value that may produce it. The result is applicable to any aperture and is shown to imply a similar expression for the Strehl ratio as a function of the minimum amplitude range of the aberration.
© 2000 Optical Society of America
Original Manuscript: June 2, 1999
Revised Manuscript: October 1, 1999
Manuscript Accepted: October 4, 1999
Published: February 1, 2000
A. van den Bos, "Aberration and the Strehl ratio," J. Opt. Soc. Am. A 17, 356-358 (2000)