title: A novel technique to measure laser beam spot sizes.
abstract: In this letter we report a novel technique to measure small laser beam spot sizes. We use the open aperture z-scan technique as a tool to measure the laser beam spot size. This technique measures small spot sizes with accuracy better than 10%.
authors.affiliation: Engineering Physics Dept, Cairo Univ, Cairo, Egypt.
authors.forename: H S
authors.initials: HS
authors.lastname: Loka
authors.forename: P W
authors.initials: PW
authors.lastname: Smith