NDLI: First demonstration of a laser emission in hybrid nanostructured optical fibres based on SiO2/SnO2 system doped by ytterbium ions

Content Provider	IEEE Xplore Digital Library
Author	Granger, G. Restoin, C. Roy, P. Jamier, R. Rougier, S. Lecomte, A. Gaponov, D. Blondy, J.-M.
Copyright Year	2013
Description	Author affiliation: SPCTS, Limoges, France (Lecomte, A.) \|\| Xlim Res. Inst., Limoges, France (Granger, G.; Restoin, C.; Roy, P.; Jamier, R.; Rougier, S.; Gaponov, D.; Blondy, J.-M.)
Abstract	Summary form only given. Recent years, researches have shown that it is possible to achieve nanostructured core fibres by incorporating dielectric [1,2], metallic nanoparticles such as Au, or quantum dots [3] in an amorphous matrix. These nanoparticles dispersed in a silica matrix present the advantage to accept a high concentration of doping ions such as rare-earth (RE) ions avoiding the quenching phenomenon, which allows to demonstrate a great potential in optical amplification. Zirconia nanoparticles have been successfully incorporated by G. Brasse et al. with the sol-gel method [1] and by Kir'Yanov et al. using the Modified Chemical Vapor Deposition (MCVD) [2]. The laser effect has been demonstrated in this Yb doped optical fibre. The incorporation of semiconductor nanoparticles in the core of the optical fibre is a challenge to get original optical properties such as original wavelength emission. Tin oxide appears as an interesting candidate due to its low phonon energy (700 $cm^{-1})$ and its high refractive index (1.99 at 632nm). Moreover, energy transfer can be observed in this kind of nanoparticles doped with rare earth ions, which leads to original luminescence [4,5].In this paper, we present the first fabrication of a SiO2/SnO2 nanostructured optical fibre. A fibre with a core composed of 60% mol SiO240% mol SnO2 doped with 1.6% mol ytterbium ions has been fabricated by the sol-gel chemical synthesis associated to the drawing fibre process. A study of the microstructural properties has been carried out using high resolution X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that 4 - 6 nm diameter SnO2 nanoparticles are crystallized in the rutile phase in the amorphous silica matrix (Fig. 1a). The optical properties of the nanostructured fibre have been investigated: the losses are lower than 0.5 dB.m-1 and the maximum refractive index difference is about 2.5 .10-2 at 668 nm (Fig. 1b). The presence of these particles ensures a modification of the Yb3+ ions environment and then, we have demonstrated a laser effect. An original laser emission in a short 4%-100% cavity has been achieved at 1050nm (Lfibre: 20.5cm): a 3.18 mW.μm-2 threshold with a 8% yield (Fig. 1b) is obtained. This result is a milestone toward the realization of a laser with an original nanostructured fibre by optimizing the nanoparticles concentration.
Sponsorship	Eur. Phys. Soc.
Starting Page	1
Ending Page	1
File Size	436442
Page Count	1
File Format	PDF
e-ISBN	9781479905942
DOI	10.1109/CLEOE-IQEC.2013.6801390
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-12
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fibers Nanoparticles Particle beam optics Optical device fabrication Ions Fiber lasers
Content Type	Text
Resource Type	Article

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