Theoretical analysis of optical properties of dielectric coatings dependence on substrate subsurface defects

Jian Shen; Shouhua Liu; Zicai Shen; Jianda Shao; Zhengxiu Fan

doi:10.1117/12.668146

1 February 2006 Theoretical analysis of optical properties of dielectric coatings dependence on substrate subsurface defects

Jian Shen, Shouhua Liu, Zicai Shen, Jianda Shao, Zhengxiu Fan

Author Affiliations +

Proceedings Volume 6034, ICO20: Optical Design and Fabrication; 60341C (2006) https://doi.org/10.1117/12.668146
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

A model for refractive index of stratified dielectric substrate was put forward according to theories of inhomogeneous coatings. The substrate was divided into surface layer, subsurface layer and bulk layer along the normal direction of its surface. Both the surface layer (separated into N₁ sublayers of uniform thickness) and subsurface layer (separated into N₂ sublayers of uniform thickness), whose refractive indices have different statistical distributions, are equivalent to inhomogeneous coatings respectively. And theoretical deduction was carried out by employing characteristic matrix method of optical coatings. An example of mathematical calculation for optical properties of dielectric coatings had been presented. The computing results indicate that substrate subsurface defects bring about additional bulk scattering and change propagation characteristic in thin film and substrate. Therefore, reflectance, reflective phase shift and phase difference of an assembly of coatings and substrate deviate from ideal conditions. The model will provide some beneficial theory directions for improving optical properties of dielectric coatings via substrate surface modification.

Citation Download Citation

Jian Shen, Shouhua Liu, Zicai Shen, Jianda Shao, and Zhengxiu Fan "Theoretical analysis of optical properties of dielectric coatings dependence on substrate subsurface defects", Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60341C (1 February 2006); https://doi.org/10.1117/12.668146

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available