Abstract

The influence of heat treatment on the spectral performance of a V-type antireflection coating was studied. This coating was applied to ophthalmic glass windows for an Nd:YAG laser and consisted of two oxide layers designed to reduce the reflectance at 1.06 μm. Typical results show minimum reflectance of <0.1% at the required wavelength. The coated samples were heated in air to 300 and 500°C and cooled to room temperature. A significant shift of the reflectance curve toward the short wavelengths and higher values of the reflectance at the minimum point was obtained dependent on the heating temperature. We found changes in the optical thicknesses and of the refractive indices of the layers. Considering these changes the coating with the same materials was redesigned to assure meeting specifications after heating. The experimental results show that this effect is mainly due to changes in the optical thicknesses and the refractive indices of the layers while contributions of other parameters could be neglected. The laser damage threshold of the redesigned coatings were >3 GW/cm2.

© 1982 Optical Society of America

Full Article  |  PDF Article
More Like This
Antireflective surfaces for high-energy laser optics formed by neutral-solution processing

L. M. Cook, W. H. Lowdermilk, D. Milam, and J. E. Swain
Appl. Opt. 21(8) 1482-1485 (1982)

High performance step-down AR coatings for high refractive-index IR materials

J. A. Dobrowolski and F. Ho
Appl. Opt. 21(2) 288-292 (1982)

Scandium oxide coatings for high-power UV laser applications

F. Rainer, W. H. Lowdermilk, D. Milam, T. Tuttle Hart, T. L. Lichtenstein, and C. K. Carniglia
Appl. Opt. 21(20) 3685-3688 (1982)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription