Studies on Optical Limiting Characteristics of Silicon Nanoparticles Synthesized by Laser Ablation

Shukla, V.; Singh, C. P.; Srivastava, Amar; Bindra, K. S.

doi:10.1166/jnn.2012.6209

Cited by 6 publications

(3 citation statements)

References 15 publications

(22 reference statements)

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“…Low power OL, with low limiting threshold, was obtained, based on the phenomenon of thermal defocusing. Si NPs dispersed in toluene were also tested with ns laser pulses at 532 nm . Their OL properties were found to be better than standard optical limiter fullerene C60 in toluene with a threshold about 3 times smaller.…”

Section: Inorganic Materialsmentioning

confidence: 99%

“…Si NPs dispersed in toluene were also tested with ns laser pulses at 532 nm. 565 Their OL properties were found to be better than standard optical limiter fullerene C60 in toluene with a threshold about 3 times smaller. The main mechanism of the resulting OL effect was nonlinear absorption and thermal nonlinear refraction, besides nonlinear scattering.…”

Section: Metal Nanoparticlesmentioning

confidence: 99%

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Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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Section: Inorganic Materialsmentioning

confidence: 99%

Section: Metal Nanoparticlesmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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“…Ag substrates corresponding to the ablation at different fluences in water as mentioned above are depicted in Figure 10, which revealed fabrication of pillar-like structures in the laser exposed portions. LAL is utilized with both ns and fs pulses to produce many other nanomaterials such as Ge, [156][157] silicon, [158][159] GaAs, 160 antimony sulphide, 161 and zinc, 162 Mg/MgO, 163 Ti/TiO 2 , 164 165…”

Section: Effect Of Beam Waist and Multiple/double/singlementioning

confidence: 99%

Ultrafast Laser Ablation in Liquids for Nanomaterials and Applications

Rao¹,

Podagatlapalli²,

Hamad³

2014

j. nanosci. nanotech.

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We present an inclusive overview of the ultrafast ablation technique performed in liquids. Being a comparatively new method, we bring out the recent progress achieved, present the challenges ahead, and outline the future prospects for this technique. The review is conveniently divided into five parts: (a) a succinct preamble to the technique of ultrafast ablation in liquids (ULAL) is provided. A brief introduction to the conventional ns ablation is also presented for the sake of completeness (b) fundamental physical processes involved in this technique are elaborated (c) specific advantages of the technique compared to other physical and chemical methodologies are enumerated (d) applications of this technique in photonics; biomedical and explosives detection [using surface-enhanced Raman scattering (SERS)] is updated (e) future prospects describing the potential of this technique for creating unique nanoparticles (NPs) and nanostructures (NSs) for niche applications. We also discuss some of the recently reported significant results achieved in a variety of materials, especially metals, using this technique. Furthermore, we present some of our own experimental data obtained from ULAL of Ag, Cu, and Zn in a variety of liquids such as acetone, water, acetonitrile etc. The generated NPs (colloidal solutions) and NSs (on substrates) have been successfully utilized for nonlinear optical, SERS, and biomedical applications.

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