Topographic measurements of precision-ground optical glasses.
- 1 April 1997
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 36 (10) , 2211-2216
- https://doi.org/10.1364/ao.36.002211
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.Keywords
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