We demonstrate the acquisition of high-quality two-photon fluorescence
microscopy images using an all-solid-state self-mode-locked Cr:LiSAF
laser. We contrast the performance of the two-photon technique with si
ngle-photon confocal fluorescence microscopy images taken with an argo
n-ion laser. Examples of improved depth penetration and reduced dye bl
eaching are presented. (C) 1997 Optical Society of America.