All-in-fibre Rayleigh-rejection filter for Raman spectroscopy

Brunetti, Anna Chiara; Scolari, Lara; Lund-Hansen, Toke; Weirich, Johannes; Rottwitt, Karsten

doi:10.1049/el.2011.2866

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Three desired functions can be identified: (a) generation of the excitation light; (b) its delivery to the sample and the efficient collection of Raman scattering; and (c) guidance of the latter to a suitable detector. Spectral filtering and analysis are functionalities demonstrated in-fiber elsewhere, making use of fiber Bragg gratings [6], photonic crystal fibers [7] and multimode fibers [8]. (a) A fiber laser represents a good choice for the generation of the excitation light.…”

Section: Introductionmentioning

confidence: 99%

Raman probes based on optically-poled double-clad fiber and coupler

Brunetti¹,

Margulis²,

Rottwitt³

2012

Opt. Express

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Abstract:Two fiber Raman probes are presented, one based on an optically-poled double-clad fiber and the second based on an opticallypoled double-clad fiber coupler respectively. Optical poling of the core of the fiber allows for the generation of enough 532nm light to perform Raman spectroscopy of a sample of dimethyl sulfoxide (DMSO), when illuminating the waveguide with 1064nm laser light. The Raman signal is collected in the inner cladding, from which it is retrieved with either a bulk dichroic mirror or a double-clad fiber coupler. The coupler allows for a substantial reduction of the fiber spectral background signal conveyed to the spectrometer. References and links1. R. L. McCreery, M. Fleischmann, and P. Hendra, "Fiber optic probe for remote Raman spectrometry," Anal.Chem. 55 (1), 146-148 (1983). 2. I. Lewis and P. Griffiths, "Raman spectrometry with fiber-optic sampling," Appl. Spectrosc. 50, 12A-30A (1996). 3. T. Cooney, H. Skinner, and S. Angel, "Comparative study of some fiber-optic remote Raman probe designs. Part I: Model for liquids and transparent solids," Appl. Spectrosc. 50, 836-848 (1996). 4. T. Cooney, H. Skinner, and S. Angel, "Comparative study of some fiber-optic remote Raman probe designs. Part II: Tests of single-fiber, lensed, and flat-and bevel-tip multi-fiber probes," Appl. Spectrosc. 50, 849-860 (1996). 5. U. Utzinger and R. R. Richards-Kortum, "Fiber optic probes for biomedical optical spectroscopy," J. Biomed.Opt. 8, 121-147 (2003). 6. M.J. Pelletier, "Fiber optic probe with integral optical filtering," USA Patent no. 5862273 (1999). 7. A. C. Brunetti, L. Scolari, T. Lund-Hansen, J. Weirich, and K. Rottwitt, "All-in-fiber Rayleigh-rejection filter for Raman spectroscopy," Electron. Lett. 48(5), 275-276 (2012). 8. B. Redding and H. Cao, "Using a multimode fiber as a high-resolution, low-loss spectrometer," Opt. Lett. 37(16), 3384-3386 (2012). 9. V. Pruneri, G. Bonfrate, P. G. Kazansky, D. J, Richardson, N. G. Broderick, J. P. de Sandro, C. Simonneau, P.Vidakovic, and J. A. Levenson, "Greater than 20%-efficient frequency-doubling of 1532-nm nanosecond pulses in quasi-phase matched germanosilicate optical fibers," Opt. Lett. 24, 208-210 (1999 1911-1913 (2006). 20. M. Buric, K. Chen, J. Falk, and S. Woodruff, "Enhanced spontaneous Raman scattering and gas composition analysis using a photonic crystal fiber," Appl. Opt. 47, 4255-4261 (2008).

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Section: Introductionmentioning

confidence: 99%

Raman probes based on optically-poled double-clad fiber and coupler

Brunetti¹,

Margulis²,

Rottwitt³

2012

Opt. Express

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“…In the case of singlefiber geometries the path separation between excitation and collection is also a major issue. While in-fiber Rayleighrejection filtering has previously been demonstrated [1,2], monolithic fiber lasers in the visible range are not so trivial to realize. Nevertheless, by optically poling the core of the fiber responsible for the delivery of the excitation light it is possible to achieve efficient second-harmonic generation (SHG) [3], thus being able to perform Raman spectroscopy at visible wavelengths despite having injected infrared (IR) light into the fiber.…”

Section: Introductionmentioning

confidence: 99%

Raman Probe Based on Optically-Poled Double-Core Fiber

Brunetti

Margulis

Rottwitt

2012

Imaging and Applied Optics Technical Papers

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A novel Raman probe based on an optically-poled double-core fiber is reported. Efficient in-fiber second-harmonic generation allows for Raman spectroscopy at 532 nm when illuminating the fiber with 1064 nm laser light. The concentrical cores of the fiber provide independent paths for the delivery of the excitation light and the collection of Raman scattering. Spectra of a sample of dimethyl sulfoxide acquired with this device are presented.

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All-in-fibre Rayleigh-rejection filter for Raman spectroscopy

Cited by 2 publications

References 5 publications

Raman probes based on optically-poled double-clad fiber and coupler

Raman probes based on optically-poled double-clad fiber and coupler

Raman Probe Based on Optically-Poled Double-Core Fiber

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