Enhancing IR-ATR absorption by using bi-tapered MIR transparent fibers

E. Rosenberg; Robert A. Kellner

doi:10.1117/12.166785

31 January 1994 Enhancing IR-ATR absorption by using bi-tapered MIR transparent fibers

E. Rosenberg, Robert A. Kellner

Proceedings Volume 2089, 9th International Conference on Fourier Transform Spectroscopy; (1994) https://doi.org/10.1117/12.166785
Event: Fourier Transform Spectroscopy: Ninth International Conference, 1993, Calgary, Canada

Abstract

The use of tapered fibers for mid-IR evanescent wave spectroscopy is presented. Tapering optical fibers leads to a substantial signal enhancement as compared to conventional fiber absorption. A ray-tracing model for the simulation of the fiber optic absorption has been developed. This model shows the increase in penetration depth due to the decrease of the incidence angle to be the most important factor for signal enhancement.

Citation Download Citation

E. Rosenberg and Robert A. Kellner "Enhancing IR-ATR absorption by using bi-tapered MIR transparent fibers", Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); https://doi.org/10.1117/12.166785

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