Characterization of polymeric films by integrated optics

Jerome D. Swalen

doi:10.1117/12.279851

30 July 1997 Characterization of polymeric films by integrated optics

Jerome D. Swalen

Proceedings Volume 10291, Materials Characterization and Optical Probe Techniques: A Critical Review; 102910O (1997) https://doi.org/10.1117/12.279851
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Integrated optics are powerful and versatile methods for determining the structural properties of polymeric thin films. By complete analyses of the modal structure of the optical fields within the guiding film, the thickness, indices of refraction (including any anisotropy) and the attenuation of the propagating wave can all be calculated. The decrease in the optical field with distance can be caused by absorption or Rayleigh scattering, that is, surface and bulk scattering. Because each mode has a distinct profile across a film, laminar structures through a film or a multilayered film are probed. The intense optical field within the waveguide makes possible fluorescence or Raman scattering with good signal strength. To reduce interference coming from fluorescence, frequently found in commercial polymers, Fourier transform waveguide Raman in the infrared allows one to observe the Raman spectrum without exciting any fluorescence. Finally, the high sensitivity of optical waveguides to structural or chemical changes has led to a number of sensor and nonlinear optical applications.

Citation Download Citation

Jerome D. Swalen "Characterization of polymeric films by integrated optics", Proc. SPIE 10291, Materials Characterization and Optical Probe Techniques: A Critical Review, 102910O (30 July 1997); https://doi.org/10.1117/12.279851

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