Theoretical assessment of optical reflectometry for film chemical-sensors

Augusto Garcia-Valenzuela; J. M. Saniger-Blesa; C. Garcia-Segundo

doi:10.1117/12.328628

4 December 1998 A theoretical assessment of optical reflectometry for film chemical sensors

Augusto Garcia-Valenzuela, J. M. Saniger-Blesa, C. Garcia-Segundo

Proceedings Volume 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications; (1998) https://doi.org/10.1117/12.328628
Event: 1998 International Conference on Applications of Photonic Technology, 1998, Ottawa, Canada

Abstract

We investigate theoretically the limits to the resolution imposed by the fundamental optical noises in film-based chemical sensors interrogated by optical reflectometry. We suggest a dynamic reflectometry approach as a possible technique to achieve the ultimate resolution. We find that a theoretical resolution around 10¹⁰ absorbed analyte molecules/cm² is possible in different cases. In the case of conducting films appreciably lower values may be possible.

Citation Download Citation

Augusto Garcia-Valenzuela, J. M. Saniger-Blesa, and C. Garcia-Segundo "A theoretical assessment of optical reflectometry for film chemical sensors", Proc. SPIE 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, (4 December 1998); https://doi.org/10.1117/12.328628

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