Chemically Tapered Silver Halide Fibers: An Approach for Increasing the Sensitivity of Mid-Infrared Evanescent Wave Sensors
| Autor: | Manfred Karlowatz, Martin Kraft, Boris Mizaikoff, E. Eitenberger, Abraham Katzir |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Materials science
Silver halide Spectrometer business.industry Infrared Scanning electron microscope 010401 analytical chemistry Halide Tapering 01 natural sciences 0104 chemical sciences 010309 optics chemistry.chemical_compound Optics chemistry Etching (microfabrication) 0103 physical sciences Optoelectronics Fiber business Instrumentation Spectroscopy |
| Zdroj: | Applied Spectroscopy. 54:1629-1633 |
| ISSN: | 1943-3530 0003-7028 |
| Popis: | In this work an innovative etching technique for tapering silver halide fibers is introduced. As silver halides form soluble complexes with thiosulfate in aqueous solution, the fiber can be chemically tapered by an etching process, which also warrants a high quality of the fiber surface. The evanescent field sensitivity of thus obtained tapered fibers was raised by more than one order of magnitude, demonstrated by calibration curves of tetrachloroethylene in hexane recorded with a tapered sensor fiber coupled to a Fourier transform infrared (FT-IR) spectrometer. |
| Databáze: | OpenAIRE |
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