Analysis of multilayer metal-dielectric thin-film structures using prism coupling technique

  • Ivan O. Goriachuk   ,
  • Vladislav N. Glebov  ,
  • Andrey M. Maliutin  , 
  • Viktor I. Sokolov  
  • a , d Institute on Photonic Technologies, Federal Research Center “Crystallography and Photonics”, Russian Academy of Sciences
  • b, c Institute on Laser and Information Technologies, Federal Research Center “Crystallography and Photonics”, Russian Academy of Sciences
  • Federal Research Center “Scientific Research Institute for System Analysis”, Russian Academy of Sciences
Cite as
Goriachuk I.O., Glebov V.N., Maliutin A.M., Sokolov V.I. (2018). Analysis of multilayer metal-dielectric thin-film structures using prism coupling technique. Proceedings of the 30th European Modeling & Simulation Symposium (EMSS 2018), pp. 289-293. DOI: https://doi.org/10.46354/i3m.2018.emss.040

Abstract

The mathematical algorithm and fitting method for measuring optical parameters (refractive index, extinction coefficient as well as thickness of layers) of multilayer thin-film structures using prism coupling technique is proposed. The algorithm works well both in the low and high coupling limits. It is valid for dielectric and metallic films and takes into account the variation of refractive index and extinction coefficient of the film in the direction normal to the film plane. The efficiency of the algorithm is demonstrated by measuring optical parameters of the metal-dielectric structure, which includes copper film on quart substrate, isolating sapphire film, light-guiding polymer film with embedded electro-optical chromophores and semitransparent conducting Cu cap layer. The proposed algorithm and fitting method can be used for measuring electro-optical coefficients in thin films.

References

  1. Ay F., Kocabas A., Cocabas C., Aydinli A., Agan S., 2004. Prism coupling technique investigation of elasto-optical properties of thin polymer films. Journal of Applied Physics, 96 (12), 7147-7153
  2. Chiang K.S., Cheng S.Y., Liu Q., 2007. Characterization of ultrathin dielectric films with
    the prism-coupler method. Journal of Lightwave Technology 25 (5), 1206 - 1211.
  3. Dawson P., Cairns G.F., O’Prey S.M., 2000. Prism coupler with variable coupling gap. Review of
    Scientific Instruments, 71 (11), 4208 - 4212.
  4. Nazarov M.M., Glebov V.N., Goriachuk I.O., Dubrova G.A., Malyutin A.M., Sokolov V. I., 2018. A
    Method for Measuring the Electro-optical Response of Chromofore-embedded Polymer Films Using a Prism Coupler. Instruments and Experimental Techniques, 61:106
  5. Sokolov V.I., Glebov V.N., Malyutin A.M., Molchanova S.I., Khaydukov E.V., Panchenko V.Ya., 2015. Investigation of optical properties of multilayer dielectric structures using prismcoupling technique. Quantum Electronics 45 (9),
    868–872
  6. Sokolov V.I., Marusin N.V., Panchenko V.Ya., Savelyev A.G., Seminogov V.N., Khaidukov E V, 2013. Determination of refractive index, extinction coefficient and thickness of thin films by the method of waveguide mode excitation. Quantum Electronics 43 (12), 1149–1153.
  7. Ulrich R., Torge R., 1973. Measurement of thin film parameters with a prism coupler. Applied Optics
    12 (12), 2901-2908.