Changes in the surface roughness of optical glasses in a humid environment

Paramonova, O.L., Shardakov, N.Т., Kruchinin, D.Y.

Full text «Opticheskii Zhurnal»

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Парамонова О.Л., Шардаков Н.Т., Кручинин Д.Ю. Изменение шероховатости поверхности оптических стекол во влажной атмосфере // Оптический журнал. 2020. Т. 87. № 9. С. 76–82. http://doi.org/10.17586/1023-5086-2020-87-09-76-82

Paramonova O.L., Shardakov N.T., Kruchinin D.Yu. Changes in the surface roughness of optical glasses in a humid environment // Opticheskii Zhurnal. 2020. V. 87. № 9. P. 76–82. http://doi.org/10.17586/1023-5086-2020-87-09-76-82

For citation (Journal of Optical Technology):

O. L. Paramonova, N. T. Shardakov, and D. Yu. Kruchinin, "Changes in the surface roughness of optical glasses in a humid environment," Journal of Optical Technology. 87(9), 558-561 (2020). https://doi.org/10.1364/JOT.87.000558

Abstract:

Long-term testing of silicate and borate optical glasses is performed in a humid environment. Products of water reacting with glass components are shown to form on the borate glass surface, causing an increase in the roughness parameter R_z. Pretreatment in hexamethyldisiloxane vapors reliably protects glasses from aggressive moisture. Silicate optical glasses are more resistant to humidity and do not require pretreatment. Roughness parameter R_z is found to be an inadequate metric of the roughness of the surface with a protective coating, owing to the limitations of its determination. Topographic measurements are more reliable in this instance.

Keywords:

optical glass, roughness, wet atmosphere, reaction products, protective film

OCIS codes: 240.5770

References:

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