Influence of gas humidity on the reflection coefficient of multilayer dielectric mirrors

The influence of water vapor on the reflection coefficient of multilayer mirrors was studied using a gas cell with multiple reflections from the mirrors. A strong change in the reflection coefficient of the mirrors (up to 0.9%) was found when water vapor under a pressure of 23 mbar was injected into...

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Bibliographic Details
Published in:Applied optics (2004) 2016-06, Vol.55 (17), p.4763-4768
Main Authors: Serdyukov, V I, Sinitsa, L N, Lugovskoi, A A
Format: Article
Language:English
Subjects:
Coatings
Dielectrics
Humidity
Multilayers
Reflection
Reflection coefficient
Refraction
Water vapor
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Summary:The influence of water vapor on the reflection coefficient of multilayer mirrors was studied using a gas cell with multiple reflections from the mirrors. A strong change in the reflection coefficient of the mirrors (up to 0.9%) was found when water vapor under a pressure of 23 mbar was injected into the cell, which was interpreted as a change in the refraction index of the layers of multilayer coatings when water vapor penetrated into the porous coating structure.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.55.004763