Topographic measurements of precision-ground optical glasses.
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.
Bennett
J M
JM
Namba
Y
Y
Guerra
J M
JM
Jahanmir
J
J
Balter
T L
TL
Podlesny
J C
JC