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Proceedings Paper

Small-volume cavity cell using hollow optical fiber for Raman scattering-based gas detection
Author(s): Y. Okita; T. Katagiri; Y. Matsuura
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Paper Abstract

The highly sensitive Raman cell based on the hollow optical fiber that is suitable for the real-time breath analysis is reported. Hollow optical fiber with inner coating of silver is used as a gas cell and a Stokes light collector. A very small cell whose volume is only 0.4 ml or less enables fast response and real-time measurement of trace gases. To increase the sensitivity the cell is arranged in a cavity which includes of a long-pass filter and a high reflective mirror. The sensitivity of the cavity cell is more than two times higher than that of the cell without cavity.

Paper Details

Date Published: 16 February 2011
PDF: 6 pages
Proc. SPIE 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI, 78940N (16 February 2011); doi: 10.1117/12.874828
Show Author Affiliations
Y. Okita, Tohoku Univ. (Japan)
T. Katagiri, Tohoku Univ. (Japan)
Y. Matsuura, Tohoku Univ. (Japan)


Published in SPIE Proceedings Vol. 7894:
Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI
Israel Gannot, Editor(s)

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