Nonlinear absorption of transparent glass ceramics containing sodium niobate nanocrystals

Oliveira, T. R.; Menezes, Leonardo de S.; Araújo, Cid B. de; Lipovskii, A. A.

doi:10.1103/physrevb.76.134207

Cited by 19 publications

(12 citation statements)

References 22 publications

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“…[11][12][13][14][15][16][17][18] Indeed, GC containing sodium niobate (NaNbO 3 ) nanocrystals (GC-SNN) proved to be an interesting material for all-optical switching and optical limiting applications. [15][16][17][18] The fabrication of GC-SNN is reported in Refs. 9 and 14, in which a detailed investigation of the structural transformations from the vitreous state to the GC state is described and the conditions under which to prepare samples with controlled properties are identified.…”

Section: Introductionmentioning

confidence: 99%

Luminescence properties and optical dephasing in a glass-ceramic containing sodium-niobate nanocrystals

Almeida

Menezes

Araújo

et al. 2011

Journal of Applied Physics

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Articles you may be interested inFine tunable red-green upconversion luminescence from glass ceramic containing 5%Er3+:NaYF4 nanocrystals under excitation of two near infrared femtosecond lasers J. Appl. Phys. 116, 063101 (2014); 10.1063/1.4892594Broadband optical amplification in silicate glass ceramics containing Li 2 Photoluminescence (PL) and degenerate four-wave-mixing (DFWM) experiments were performed in a silica-niobic composite containing NaNbO 3 nanocrystals. The PL results indicate the presence of in-gap states attributed to excitons in the nanocrystals and defect centers. The luminescence of the samples becomes more intense at low temperatures, indicating that nonradiative relaxations dominate the dynamics of the in-gap states. The DFWM experiments allowed for measurements of the homogeneous relaxation time, (20 6 3) fs, of the third-order polarization at room temperature. The main contributions to the dynamics of the electronic response are attributed to the trapping of electrons in the in-gap states and to carrier and phonon scattering.

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Section: Introductionmentioning

confidence: 99%

Luminescence properties and optical dephasing in a glass-ceramic containing sodium-niobate nanocrystals

Almeida

Menezes

Araújo

et al. 2011

Journal of Applied Physics

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“…[1][2][3][4] This high level of the energy deposition results in a significant increase in temperature and pressure within the deposition area. This rapid increase used to drive shock-and rarefaction waves in the surrounding pristine material.…”

Section: Introductionmentioning

confidence: 98%

Breakdown in a bulk of transparent solids under irradiation of a nanosecond laser pulse

et al. 2014

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A single pulse of a nanosecond laser was tightly focused in the bulk of transparent materials (soda lime glass, borosilicate glass, fused silica , sapphire and Gorilla Glass) to a beam spot diameter of ∼ 2.1μm. A value of the total energy absorbed in the materials was measured with corrections for the transmitted, scattered and reflected components of the incident energy. It was found that 3-11% of the incident radiation was scattered but the total absorption still achieved a very high level of up to 88%. Absorptance dependence on the incident fluence was reasonably approximated by the sigmoidal Hill function. Here we suggest using this analytical description to identify empirical intrinsic laser-induced breakdown threshold (LIBT). Optical damage threshold (ODT) was identified by optical inspection. The results for some materials suggest significantly lower breakdown threshold than that reported earlier for more loosely focused beams. A study of the damage area morphology with a scanning electron microscope (SEM) and a high resolution transmission microscope (HRTEM) revealed existence of the shock waves-affected area with a localized nano-crystallization. Spectroscopic study of the light emission accompanying breakdown showed typical quasi-continuum emission with temperature as high as 8917K (0.8 eV).

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“…For experiments with single pulses, the system of equations (1) and (2) has the analytical solution given in Ref. 7 that can be applied to describe the results of Fig. 3(a).…”

Section: A Femtosecond Nonlinearity At 800 Nmmentioning

confidence: 99%

“…The large third-order optical susceptibility, v ð3Þ , due to the high polarizability of the heavymetal ions, allows applications of HMO glasses in optical limiting, optical amplifiers, and all-optical switching. [1][2][3][4][5][6][7][8][9][10][11][12] The HMO glasses containing bismuth oxide, Bi 2 O 3 , present large nonlinearity because of the high polarizability of the Bi 3þ ion due to its lone-electron pair in the valence shell and its large ionic radius. Moreover, with the introduction of Bi 2 O 3 in a HMO glass network, the number of nonbridging oxygen grows, and thus, the optical refractive and absorptive properties of the material increase.…”

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confidence: 99%

“…The NL properties of glasses with Bi 2 O 3 were discussed by various authors that report large NL refractive index and high twophoton absorption (TPA) coefficients for certain glass compositions. [7][8][9][12][13][14][15] For instance, the influence of Bi 2 O 3 on the structural, thermal, and NL optical properties of phosphate glasses was investigated recently. 9 The results obtained show that the NL refractive indices increase with the increase of the Bi 2 O 3 concentration.…”

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Nonlinear optical properties of Bi2O3-GeO2 glass at 800 and 532 nm

Oliveira¹,

Falcão-Filho²,

Araújo³

et al. 2013

Journal of Applied Physics

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The nonlinear (NL) optical properties of glassy xBi 2 O 3 -(1Àx) GeO 2 with x ¼ 0.72 and 0.82 were investigated. The experiments were performed with lasers at 800 nm (pulses of 150 fs) and 532 nm (pulses of 80 ps and 250 ns). Using the Kerr gate technique, we observed that the NL response of the samples at 800 nm is faster than 150 fs. NL refraction indices, jn 2 j % 5 Â 10 À16 cm 2 /W, and two-photon absorption coefficients, a 2 , smaller than 0.03 cm/GW, were measured at 800 nm. At 532 nm, we measured the NL transmittance of the samples. From the results obtained, we determined a 2 %1 cm/GW and excited-state absorption cross-sections of %10 À22 cm 2 due to freecarriers. V C 2013 AIP Publishing LLC. [http://dx

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Nonlinear absorption of transparent glass ceramics containing sodium niobate nanocrystals

Cited by 19 publications

References 22 publications

Luminescence properties and optical dephasing in a glass-ceramic containing sodium-niobate nanocrystals

Luminescence properties and optical dephasing in a glass-ceramic containing sodium-niobate nanocrystals

Breakdown in a bulk of transparent solids under irradiation of a nanosecond laser pulse

Nonlinear optical properties of Bi2O3-GeO2 glass at 800 and 532 nm

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