Abstract

The performance of high power CO2 lasers depends directly on the quality of the metallic mirrors used. The mirrors are therefore the key elements of these lasers and must have a reflectance as near as possible to unity. Thus, we have to characterize these mirrors precisely, that is to say, to use suitable measurement methods to determine their optical properties with enough accuracy. In this paper we describe a reflectance measurement system based on the use of a classical spectrophotometer. This method gives relative measurements, but with the help of a known standard reflectance, we can obtain the absolute value. Experimental results show that the accuracy is ~1–2.5 × 10−4 provided that many measurements are made and precautions are taken. We propose here to study these conditions and in particular to give the reflectances of metallic mirrors at 10.6 μm.

© 1989 Optical Society of America

Full Article  |  PDF Article

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 (2)

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 (8)

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 (9)

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