title: Topographic measurements of precision-ground optical glasses.
abstract: We studied the surfaces of six precision-ground optical glass samples of fused silica, BK-7, BaCD16, LaC14, NbF1, and LHG8 glass, using a mechanical profiler, a photon tunneling microscope, and a scanning force microscope. The measured roughnesses of the scanning force microscope varied from 3.5 A rms for BK-7 glass to 30 A rms for LHG8 laser glass. Good agreement was obtained among the roughness values measured with all three instruments.
authors.forename: J M
authors.initials: JM
authors.lastname: Bennett
authors.forename: Y
authors.initials: Y
authors.lastname: Namba
authors.forename: J M
authors.initials: JM
authors.lastname: Guerra
authors.forename: J
authors.initials: J
authors.lastname: Jahanmir
authors.forename: T L
authors.initials: TL
authors.lastname: Balter
authors.forename: J C
authors.initials: JC
authors.lastname: Podlesny