Abstract

We show that solid-core photonic crystal fiber (PCF) is a promising platform for evanescent-field Raman spectroscopy of low-volume analytes. The Raman peak ratio of a silica core as a background to acetonitrile solution as analyte contained in the air holes maintains a constant value despite varying laser power and fiber length in a set of measurements. The Raman signal from the silica core can be used to eliminate the need to account for the coupling losses. These results demonstrate the feasibility of quantitative measurements using PCF as a Raman platform with silica as an internal reference. In addition, integrated Raman intensity increases with the length of the PCF due to long path length of light.

© 2006 Optical Society of America

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References

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2006

2005

K. Rottwitt, K. Nielsen, J. H. Povlsen, G. Emiliyanov, T. P. Hansen, and J. B. Jensen, in Proc. SPIE 6005, 60050G (2005).
[CrossRef]

Y. Komachi, H. Sato, Y. Matsuura, M. Miyagi, and H. Tashiro, Opt. Lett. 30, 2942 (2005).
[CrossRef] [PubMed]

2004

2003

1998

G. Ocvirk, T. Tang, and D. J. Harrison, Analyst 123, 1429 (1998).
[CrossRef]

Addison, C. J.

Bjarklev, A.

Blades, M. W.

Carlsen, A.

Emiliyanov, G.

K. Rottwitt, K. Nielsen, J. H. Povlsen, G. Emiliyanov, T. P. Hansen, and J. B. Jensen, in Proc. SPIE 6005, 60050G (2005).
[CrossRef]

Folkenberg, J. R.

Hansen, T. P.

Harrison, D. J.

G. Ocvirk, T. Tang, and D. J. Harrison, Analyst 123, 1429 (1998).
[CrossRef]

Ho, H. L.

Hoiby, P. E.

Hoo, Y. L.

Jensen, J. B.

Jin, W.

Knonorov, S. O.

Komachi, Y.

Matsuura, Y.

Miyagi, M.

Nielsen, K.

Nielsen, L. B.

Noordegraaf, D.

Ocvirk, G.

G. Ocvirk, T. Tang, and D. J. Harrison, Analyst 123, 1429 (1998).
[CrossRef]

Pedersen, L. H.

Povlsen, J. H.

K. Rottwitt, K. Nielsen, J. H. Povlsen, G. Emiliyanov, T. P. Hansen, and J. B. Jensen, in Proc. SPIE 6005, 60050G (2005).
[CrossRef]

Riishede, J.

Rottwitt, K.

K. Rottwitt, K. Nielsen, J. H. Povlsen, G. Emiliyanov, T. P. Hansen, and J. B. Jensen, in Proc. SPIE 6005, 60050G (2005).
[CrossRef]

Ruan, S. C.

Russell, P.

P. Russell, Science 299, 358 (2003).
[CrossRef] [PubMed]

Saleh, B. E. A.

B. E. A. Saleh and M. C. Teich, Fundamental of Photonics (Wiley, 1991).
[CrossRef]

Sato, H.

Schulze, H. G.

Shi, C.

Tang, T.

G. Ocvirk, T. Tang, and D. J. Harrison, Analyst 123, 1429 (1998).
[CrossRef]

Tashiro, H.

Teich, M. C.

B. E. A. Saleh and M. C. Teich, Fundamental of Photonics (Wiley, 1991).
[CrossRef]

Turner, R. F. B.

Wang, D. N.

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Figures (6)

Fig. 1
Fig. 1

Raman spectra of bare PCF. Fiber length, 26.67 cm; laser power, 8 mW out of the fiber; laser attenuation, 0, 3, 6, and 10.8 dB in descending order. Inset, scanning electron micrograph of the PCF structure.

Fig. 2
Fig. 2

Power dependence of two Raman peak intensities of bare PCF. Fiber length from 11.43 to 26.67 cm; the other conditions are as in Fig. 1. Dashed line, linear 1:1 relation.

Fig. 3
Fig. 3

Length dependence of the laser power out of the fiber (circles) and of Raman peak intensities (triangles) of bare PCF. The dashed lines represent linear fit.

Fig. 4
Fig. 4

Raman spectra of PCF filled with neat acetonitrile. Fiber length from 34.3 to 59.7 cm in ascending order; laser power, 50 mW out of the fiber.

Fig. 5
Fig. 5

Length dependence of the laser power out of the fiber (circles) and of Raman peak intensities of silica (triangles) and acetonitrile (squares).

Fig. 6
Fig. 6

Raman spectra of neat acetonitrile acquired in 53.3 cm PCF (solid curve) and in confocal geometry (dashed curve). The scales are chosen to get the same height of the 2252 cm 1 peak.

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