Stimulated Raman scattering in the evanescent field of liquid immersed tapered nanofibers

Shan, Liye; Pauliat, Gilles; Vienne, Guillaume; Tong, Limin; Lebrun, Sylvie

doi:10.1063/1.4807170

Cited by 27 publications

(30 citation statements)

References 11 publications

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“…Here we report a nanofiber (NF)-based evanescent-wave SRS spectroscopic technique for trace hydrogen detection. NFs are one of the best carriers for nonlinear light-matter interaction [14,15], and in virtue of the high light intensity in the evanescent field, the SRS efficiency of molecules around a NF could be orders of magnitude higher than in a HC-PCF. The technique has the merits of high selectivity, fast response, large dynamic range, and superior signal-to-noise ratio, enabling the best overall performance of fiber-optic hydrogen sensors to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Nanofiber enhanced stimulated Raman spectroscopy for ultra-fast, ultra-sensitive hydrogen detection with ultra-wide dynamic range

Qi¹,

Zhao²,

Bao³

et al. 2019

Optica

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The increasing importance of hydrogen as an energy carrier and industrial material calls for hydrogen sensors with higher sensitivity, better selectivity, faster response, and wider dynamic range. Here, we report a nanofiber (NF) sensor that satisfies these requirements with a single sensing element. The sensor is based on stimulated Raman scattering spectroscopy, but the tightly confined evanescent field associated with the NF enhances the Raman gain per unit length by a factor of 30 to 10 2 over the state-of-the-art hollow-core photonic crystal fibers and more than 10 4 over free-space beams. The NF has excellent mode quality, which ensures mode-noise-free measurement and maximizes the signal-to-noise ratio. An experiment with a 700-nm-diameter, 48-mm-long silica NF operating in the telecom wavelength band demonstrates hydrogen detection from a few parts per million to 100% with a response time less than 10 s. The sensor would be useful for a range of applications, including detection of hydrogen leakage as well as monitoring of battery charging, fuel cells, and electric power transformer health conditions.

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Section: Introductionmentioning

confidence: 99%

Nanofiber enhanced stimulated Raman spectroscopy for ultra-fast, ultra-sensitive hydrogen detection with ultra-wide dynamic range

Qi¹,

Zhao²,

Bao³

et al. 2019

Optica

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“…From simulations of the Raman cascade [12] and from previous experimental studies [27] we can estimate that the temporal pulse duration at 583 nm is shorter than the pump pulse duration (i.e. 560 ps FWHM), an order of magnitude of this pulse duration at maximum pump power is expected to be around 100-200 ps FWHM by the numerical simulations.…”

Section: Resultsmentioning

confidence: 78%

Efficient Raman converter in the yellow range with high spatial and spectral brightness

et al. 2018

Self Cite

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We present a Raman converter emitting at 583 nm on the second Stokes order of a line of propan-2-ol pumped by a microlaser at 532 nm in the sub-nanosecond regime. We used a mixture of liquids to adapt the transmission band of a photonic bandgap fiber. The internal conversion efficiency is 67% in photon numbers, and the output power is 1.06 mW, corresponding to a maximum peak power of 338 W. The beam delivered by the converter presents a Gaussian spatial structure and a high spectral brightness, typically more than five times higher than supercontinuum sources in this spectral range.

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“…To improve the sensitivity of these devices, the enhancement of the evanescent effect is benefit and has been usually adopted [11]. Microfibers, which possess high fraction of the evanescent wave highly sensitive to the variations of environmental parameters, are good candidates for the sensing occasions with high-sensitivity sensing with small footprint and fast response [12][13]. It is promising to integrate function materials with tapered fibers to develop fiber-based integrated photonic devices with high sensitivity.…”

Section: Introductionmentioning

confidence: 98%

Magnetic field tunability of square tapered no-core fibers

Miao

Lin

et al. 2014

SPIE Proceedings

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A magnetic-field-tuned photonics device based on magnetic fluid (MF) and a square tapered no-core fiber (NCF) sandwiched between two single-mode fibers (SMFs) has been proposed. The enhanced evanescent field effect in the NCF is achieved by tapering the square NCF utilizing a fusion splicer. The spectral dependence of the proposed device on the applied magnetic-field intensity has been investigated. The results indicate that a maximal sensitivity of -18.7pm/Oe is obtained for a magnetic field strength ranging from 25Oe to 450Oe. The proposed tunable device has several advantages, including low cost, ease of fabrication, compact structure, and high sensitivity.

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Stimulated Raman scattering in the evanescent field of liquid immersed tapered nanofibers

Cited by 27 publications

References 11 publications

Nanofiber enhanced stimulated Raman spectroscopy for ultra-fast, ultra-sensitive hydrogen detection with ultra-wide dynamic range

Nanofiber enhanced stimulated Raman spectroscopy for ultra-fast, ultra-sensitive hydrogen detection with ultra-wide dynamic range

Efficient Raman converter in the yellow range with high spatial and spectral brightness

Magnetic field tunability of square tapered no-core fibers

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