Thermal nonlinear refraction in the dye-doped sol–gel xTiO2·(100−x)SiO2 system

Cason, Morgan; Bersani, Danilo; Antonioli, G.; Lottici, Pier Paolo; Montenero, A.; Cavalli, Michela

doi:10.1016/s0925-3467(98)00073-1

Cited by 16 publications

(4 citation statements)

References 17 publications

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“…The thermal lens signal is expressed as the relative change in power. [31] A convenient quantity for the experiments is the total fractional intensity change…”

Section: Thermal Lens Techniquementioning

confidence: 99%

Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate): Using a single transistor—transistor logic modulated laser beam

Hassan¹,

Badran²,

Al-Ahmad³

et al. 2013

Chinese Phys. B

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A thermal lens technique is adopted using a single modulated continuous wave (cw) 532-nm laser beam to evaluate the nonlinear refractive index n 2 , and the thermo-optic coefficient dn/dT , in polymer Poly (1-naphthyl methacrylate) (P-1-NM) dissolved in chloroform, tetrahydrofuran (THF), and dimethyl sulfoxide (DMSO) solvents. The results are compared with Z-scan and diffraction ring techniques. The comparison reveals the effectiveness and the simplicity of the TTL modulation technique. The physical origin is discussed for the obtained results.

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“…The thermal lens signal is expressed as the relative change in power. [31] A convenient quantity for the experiments is the total fractional intensity change…”

Section: Thermal Lens Techniquementioning

confidence: 99%

Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate): Using a single transistor—transistor logic modulated laser beam

Hassan¹,

Badran²,

Al-Ahmad³

et al. 2013

Chinese Phys. B

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“…Silica, titania, and their composite mixture represent a new class of materials that have attracted much attention from researchers [6][7][8][9]. These silicatitania (Si-Ti) mixed oxides have considerable interest due to their specific properties such as thermal stability, high porosity, and large surface area and are widely used as catalyst and catalyst supports [10][11][12][13], photocatalysts [14], thin-film coatings [15] and optic [16][17]. In fact, with respect to other technologies which are employed to develop photonic materials, sol-gel processing exhibits several advantages in terms of rare earth solubility, composition, design, tailoring of optical properties as well as fabrication of films, waveguides, and photonic crystals [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Ho3+ and Ho3+: Yb3+ embedded silica–titania nanocomposites: structural and optical properties, Conference paper

Conference¹

2022

Egypt. J. Chem.

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Ho 3+ : Yb 3+ ions doped highly transparent SiO2-TiO2 nano-composite were successfully fabricated in the forms of monolith and thin films. the preparations were carried out via a modified sol-gel method at different annealing temperatures ranging from 500 o C up to 1000 o C for 3h. The structural and optical properties were determined by XRD, FESEM, 3D laser Raman and FTIR spectroscopy. The thickness of the thin film sample doped with 0.4 mol % of Ho 3+ ions and co-doped with 0.5mol % of Yb 3+ was measured 1.3 m using the cross-section Field emission scanning electron microscopy (FESEM) technique. These results suggest that the Ho 3+ : Yb 3+ silica-titania are promising candidates for photonic devices.

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“…So before we test the possibility of using the material in any of these applications we must first study the NOPs of the material. Currently, there are several techniques that can be used to study these properties such as ellipse rotation [34], degenerate four-wave mixing [35], interferometry [36], diffraction patterns [37], thermal lens [38] and Z-scan [39,40]. The first three techniques are sensitive and require sophisticated experimental devices.…”

Section: Introductionmentioning

confidence: 99%

Investigating the optical nonlinear properties and limiting optical of eosin methylene blue solution using a cw laser beam

2021

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Diffraction patterns and Z-scan methods are used to measure the nonlinear refractive index, NRI, of the eosin methylene blue in the solvent ethanol using a continuous wave laser beam of 473 nm wavelength. Experimental results of the former and latter methods showed the appearance of rings and the self-defocusing SDF effect respectively, and these results may be due to phase modulation. It is demonstrated that the eosin methylene blue solution have a high NRI. Also the limiting optical properties of the sample are investigated. It is observed that the sample has the optical limiter properties OLPs. It is proved that the origin of the OLPs is thermal. The NRI and threshold limiting values of the eosin methylene blue solution are −1.1 × 10−8 cm2 W−1 and 12 mW, respectively. A thermal lens model and the Fresnel–Kirchhoff integral are used to calculate the self-defocusing and the diffraction ring patterns results respectively.

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Thermal nonlinear refraction in the dye-doped sol–gel xTiO2·(100−x)SiO2 system

Cited by 16 publications

References 17 publications

Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate): Using a single transistor—transistor logic modulated laser beam

Physical origin of observed nonlinearities in Poly (1-naphthyl methacrylate): Using a single transistor—transistor logic modulated laser beam

Synthesis and characterization of Ho3+ and Ho3+: Yb3+ embedded silica–titania nanocomposites: structural and optical properties, Conference paper

Investigating the optical nonlinear properties and limiting optical of eosin methylene blue solution using a cw laser beam

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