Refractive index control in bicomponent polymer films for integrated thermo-optical applications

Paulo Azevedo Soave; Ronaldo André Ferreira Dau; Marcia Regina Becker; Marcelo Barbalho Pereira; Flavio Horowitz

doi:10.1117/1.3275452

1 December 2009 Refractive index control in bicomponent polymer films for integrated thermo-optical applications

Paulo Azevedo Soave, Ronaldo André Ferreira Dau, Marcia Regina Becker, Marcelo Barbalho Pereira, Flavio Horowitz

Author Affiliations +

Optical Engineering, Vol. 48, Issue 12, 124603 (December 2009). https://doi.org/10.1117/1.3275452

Abstract

Optical properties of transparent polymer thin films, produced by spin-coating on silicon and constituted of polycarbonate (PC), poly(methyl methacrylate) (PMMA), and PC/PMMA, were investigated with regard to integrated thermo-optical (TO) device applications. Refractive index dependences on wavelength, temperature, and film composition were measured by spectroscopic ellipsometry with a dedicated autocontrolled heater setup, in the ranges of 400 to 800 nm, 25 to 85 °C and 0 to 100 wt % PC, respectively, with determination of Cauchy and Lorentz-Lorenz parameters. Within these intervals, thermomechanical compatibility and pronounced index contrast of around 0.12 between PC and PMMA, as well as their TO coefficients one order of magnitude higher than that of silica, allow convenient tailoring for specific TO requirements. In addition, wide-range fine-tuning of refractive index variation is found to be facilitated by the weak dependence of isothermal dispersion curves and TO coefficients on film composition.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Paulo Azevedo Soave, Ronaldo André Ferreira Dau, Marcia Regina Becker, Marcelo Barbalho Pereira, and Flavio Horowitz "Refractive index control in bicomponent polymer films for integrated thermo-optical applications," Optical Engineering 48(12), 124603 (1 December 2009). https://doi.org/10.1117/1.3275452

Published: 1 December 2009

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