Effect of thickness on the optical nonlinearity of gold colloidal nanoparticles prepared by laser ablation

Golian, Yasaman; Dorranian, Davoud

doi:10.1007/s11082-013-9792-z

Cited by 11 publications

(3 citation statements)

References 21 publications

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“…515 The effect of thickness on the NLO properties of Au NPs produced via laser ablation of high-purity Au bulk in distilled water was investigated by measuring the transmitted intensity of the laser beam through the samples with increasing laser intensity. 517 The third-order nonlinearity of Au NPs-fluid was determined with Z-scan experiments. The authors found that the magnitudes of both real and imaginary parts of third-order susceptibility of samples increased upon film thickness increase.…”

Section: Metal Nanoparticlesmentioning

confidence: 99%

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: Metal Nanoparticlesmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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“…The real and the imaginary parts of the third-order susceptibility, χ (3) , can be given in the following forms [28]:…”

Section: Non-linear Optical Studiesmentioning

confidence: 99%

Non-linear Thermo-Optical Properties of MoS2 Nanoflakes by Means of the Z-Scan Technique

et al. 2020

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The non-linear thermo-optical response of MoS 2 nanoflakes was investigated using the Z-scan technique, employing TM00-mode with a CW-laser diode operating at a wavelength of 532 nm. The systems were found to display a strong non-linear response, dominated by non-linear refraction. The effect of the thickness of the MoS 2 layer, deposited on a glass substrate, on the non-linear susceptibility was studied. Furthermore, in this study, the effects of modifying the thickness of the MoS 2 nanoflakes on the non-linear optical phenomena, such as self-focusing and self-defocusing was investigated for the first time. In all cases, the non-linear absorption and refraction were determined. The corresponding third-order susceptibilities and second-order hyperpolarizability were calculated to be as large as 10-7 (esu) and 10-32 (esu), under laser excitation, respectively. Showing large third-order optical non-linearity suggests the potential of the MoS 2 nanoflakes in photonics applications.

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“…The study of nanostructured materials has attracted attention in several areas of science because they have different physicochemical properties in comparison with the bulk materials. This kind of materials is widely investigated for applications in optical storage, optical computing, harmonic generation, power limiting, rectifying devices and optical switching, therefore a high nonlinear response is a prerequisite [1][2][3]. Studies of the optical properties of nanomaterials, through interaction with high radiation intensities, have allowed one to know the dependence with its refractive index, giving rise to the phenomenon known as two-photon absorption (TPA) or saturable absorption (SA) [4,5].…”

Section: Introductionmentioning

confidence: 99%

Measurement of two-photon absorption by gold nanoparticles of different sizes photodeposited onto the core of an optical fibre

Cuvas-Limón¹,

Ortega-Mendoza²,

Padilla-Martínez³

et al. 2021

physics

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In this work, the study of two-photon absorption by gold nanoparticles of different diameters photodeposited onto the core of a single-mode optical fibre is presented. The photodeposition of nanoparticles with diameters of 10, 20, 50 and 100 nm was achieved using a continuous wave laser at a wavelength of 1550 nm and a power of 50 mW. Nonlinear optical characterization was carried out by using the P-scan technique of a high gain erbium doped fibre amplifier with pulses of 20 ns at a frequency of 10 kHz, that provides a maximum intensity of approximately 60 MW/cm2. The results show that for gold nanoparticles greater than 20 nm photodeposited onto the fibre, in both cases, the nonlinear coefficient as well as the third-order susceptibility increase as the diameter of the nanoparticles increases, describing a typical behaviour of the two-photon absorption. The obtained results can be used for the design of filters and optical limiters in the communications area.

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Effect of thickness on the optical nonlinearity of gold colloidal nanoparticles prepared by laser ablation

Cited by 11 publications

References 21 publications

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Non-linear Thermo-Optical Properties of MoS2 Nanoflakes by Means of the Z-Scan Technique

Measurement of two-photon absorption by gold nanoparticles of different sizes photodeposited onto the core of an optical fibre

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