Effect of TEOS addition on formation of Au metal nano-particles in the Au-doped optical fiber and its optical nonlinearity

Ju, Seongmin; Watekar, Pramod R.; Kang, Sung Gwon; Chung, Jun-Ki; Kim, Cheol Jin; Han, Won‐Taek

doi:10.1016/j.jnoncrysol.2010.03.032

Cited by 11 publications

(12 citation statements)

References 22 publications

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“…On the other hand, the mean diameters of PbTe QDs estimated by the TEM of the PbTe QD doped optical fiber preform as shown in Fig. 3 were 1.69 nm and 4.61 nm for the small and large particles, indicating that growth and redistribution of PbTe QDs had possibly taken place after drawing the optical fiber from the preform at a high temperature of 2150°C [32].…”

Section: Resultsmentioning

confidence: 95%

Particle size control of PbTe quantum dots incorporated in the germano-silicate glass optical fiber by heat treatment

Watekar

Kim

et al. 2010

Journal of Non-Crystalline Solids

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Section: Resultsmentioning

confidence: 95%

Particle size control of PbTe quantum dots incorporated in the germano-silicate glass optical fiber by heat treatment

Watekar

Kim

et al. 2010

Journal of Non-Crystalline Solids

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“…In general, the location of the SPR of the MNP is sensitive to the size, shape, inter-particles distance, and concentration of the MNPs along with the refractive index of dielectric medium [25,. It is well understood that, with increase in doping concentration of gold, the density of Au-NPs or gold atomic concentration is increases which in turn responsible for the refractive index increment [5,26] and the growth of size of the Au-NPs occurs due to Ostwald ripening process [27]. Therefore, the observed red-shift of SPR absorption peak of Au-NPs with enhancement in gold content is due to (i) increase of Au-NP density and (ii) growth of Au-NP size.…”

Section: Resultsmentioning

confidence: 99%

Nonlinear optical studies of sodium borate glasses embedded with gold nanoparticles

et al. 2018

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Optical glasses possessing large third-order optical nonlinear susceptibility and fast response times are promising materials for the development of advanced nonlinear photonic devices. In this context, gold nanoparticle (NP)-doped borate glasses were synthesized via the melt-quench method. The nonlinear optical (NLO) properties of thus prepared glasses were investigated at different wavelengths (i.e., at 532 nm using nanosecond pulses, at 750 nm, 800 nm, and 850 nm wavelengths using femtosecond, MHz pulses). At 532 nm, open aperture (OA) Z-scan signatures of gold NP-doped borate glasses demonstrated reverse saturable absorption (RSA), attributed to mixed intra-band and interband transitions, while in the 750-850 nm region, the OA Z-scan data revealed the presence of saturable absorption (SA), possibly due to intra-band transitions. The NLO coefficients were evaluated at all the spectral regions and further compared with some of the recently reported glasses. The magnitudes of obtained NLO coefficients clearly demonstrate that the investigated glasses are potential materials for photonic device applications.

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“…In practice, it was demonstrated that the formation of Au-NPs in silica glass fiber permits one to achieve the nonlinear refractive index (n 2 ) of about 10 −16 m 2 /W, which is several times higher in comparison to the reference fiber without the MeNPs [215]. To date, it has been shown that the final nonlinearity depends on the chosen metal, the concentration, and the dispersion of the NPs [202,216,217].…”

Section: Menp-containing Fibersmentioning

confidence: 99%

Nano-Structured Optical Fibers Made of Glass-Ceramics, and Phase Separated and Metallic Particle-Containing Glasses

Veber

Vermillac

et al. 2019

Fibers

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For years, scientists have been looking for different techniques to make glasses perfect: fully amorphous and ideally homogeneous. Meanwhile, recent advances in the development of particle-containing glasses (PCG), defined in this paper as glass-ceramics, glasses doped with metallic nanoparticles, and phase-separated glasses show that these "imperfect" glasses can result in better optical materials if particles of desired chemistry, size, and shape are present in the glass. It has been shown that PCGs can be used for the fabrication of nanostructured fibers-a novel class of media for fiber optics. These unique optical fibers are able to outperform their traditional glass counterparts in terms of available emission spectral range, quantum efficiency, non-linear properties, fabricated sensors sensitivity, and other parameters. Being rather special, nanostructured fibers require new, unconventional solutions on the materials used, fabrication, and characterization techniques, limiting the use of these novel materials. This work overviews practical aspects and progress in the fabrication and characterization methods of the particle-containing glasses with particular attention to nanostructured fibers made of these materials. A review of the recent achievements shows that current technologies allow producing high-optical quality PCG-fibers of different types, and the unique optical properties of these nanostructured fibers make them prospective for applications in lasers, optical communications, medicine, lighting, and other areas of science and industry.Made of glass, optical fibers inherited all positive and negative properties of this material. Glasses are easy and inexpensive to produce on any scale and in any shape, they can possess high chemical stability and mechanical strength, and have high transparency. However, they could hardly compete, for example, with crystalline materials in thermal conductivity, or rare-earth elements' absorption, emission cross-sections, and available transparency range. Recent advances in glass science showed that properties of this material can be significantly improved if some additional phases are formed or impregnated in the glass. In particular, advances have been achieved in the development of particle-containing glasses: glass-ceramic materials, glasses doped with metallic nanoparticles, and phase-separated glasses. To date, these particle-containing glasses have become quite common and actively used in case of the bulk materials, but are still rather new for fiber optics.The purpose of this review is to summarize recent advances in the fabrication of structured fibers made of particle-containing glasses, their potential benefits, their actual properties, and their potential applications. The review covers three types of particle-containing glasses (PCG): crystalline dielectric particles, i.e., glass-ceramics; metallic nanoparticles (MeNPs); and dielectric amorphous particles, i.e., phase-separated glasses.First, we consider properties of the PCG bulk materials, their potenti...

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Effect of TEOS addition on formation of Au metal nano-particles in the Au-doped optical fiber and its optical nonlinearity

Cited by 11 publications

References 22 publications

Particle size control of PbTe quantum dots incorporated in the germano-silicate glass optical fiber by heat treatment

Particle size control of PbTe quantum dots incorporated in the germano-silicate glass optical fiber by heat treatment

Nonlinear optical studies of sodium borate glasses embedded with gold nanoparticles

Nano-Structured Optical Fibers Made of Glass-Ceramics, and Phase Separated and Metallic Particle-Containing Glasses

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