Small-volume cavity cell using hollow optical fiber for Raman scattering-based gas detection

Y. Okita; T. Katagiri; Y. Matsuura

doi:10.1117/12.874828

16 February 2011 Small-volume cavity cell using hollow optical fiber for Raman scattering-based gas detection

Y. Okita, T. Katagiri, Y. Matsuura

Proceedings Volume 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI; 78940N (2011) https://doi.org/10.1117/12.874828
Event: SPIE BiOS, 2011, San Francisco, California, United States

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.

Citation Download Citation

Y. Okita, T. Katagiri, and Y. Matsuura "Small-volume cavity cell using hollow optical fiber for Raman scattering-based gas detection", Proc. SPIE 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI, 78940N (16 February 2011); https://doi.org/10.1117/12.874828

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