Time-domain observation of nuclear contributions to the optical nonlinearities of glasses

Kang, Ilnam; Smolorz, Sylvia; Krauss, Todd; Wise, Frank W.; Aitken, B. G.; Borrelli, Nicholas F.

doi:10.1103/physrevb.54.r12641

Cited by 34 publications

(17 citation statements)

References 20 publications

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“…The nuclear contribution to the nonlinear refractive index of some glasses is not negligible, being as high as 15-20 % of the total, depending on glass composition [1]. There are some earlier measurements of the nuclear contribution in glasses that have been performed in the femtosecond regime [2][3][4][5][6]. However, these reported values of nuclear contributions are often subject to change since they depend strongly on duration of the optical pulse [6,7].…”

Section: Introductionmentioning

confidence: 89%

“…In case of non-instantaneous response, earlier reports [8] measured the temporal evolution of the nonlinear susceptibility in standard glasses but did not observe a nuclear contribution, attributing their results to nuclear relaxation times being either too fast or too slow. Kang et al [2,9] were able to show evidence of such a contribution using ultrashort pulses (∼35 fs) exciting localized stretching modes of glasses.…”

Section: Introductionmentioning

confidence: 97%

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Third-order nonlinear optical response in transparent solids using ultrashort laser pulses

et al. 2012

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The third-order optical nonlinearity, χ (3) , is measured in transparent glasses (BK7 and fused silica) and crystals (BaF 2 and quartz) using 36-fs, 800-nm laser pulses and the optical Kerr gate (OKE) technique; values are found to lie in the range 1.3-1.7 × 10 −14 esu, in accordance with theoretical estimates. We probe the purely electronic response to the incident ultrashort laser pulse in fused silica and BK7 glass. In BaF 2 and quartz, apart from the electronic response we also observe contribution from the nuclear response to the incident ultrashort pulses. We observe oscillatory modulations that persist for ∼400 fs. The response of the media (glasses and crystals) to ultrashort pulses is also measured using two-beam self-diffraction; the diffraction efficiency in the first-order grating is measured to be in the range of 0.06-0.13 %. Third harmonic generation due to self-phase matching in the transient grating geometry is measured as a function of temporal delay between the two incident ultrashort pulses, yielding the autocorrelation signal.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 97%

Third-order nonlinear optical response in transparent solids using ultrashort laser pulses

et al. 2012

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“…Indeed, glasses with heavy metal ions and vitreous ceramics containing dielectric or metallic nanoparticles have been considered for various specific uses. [1][2][3][4][5][6][7][8] Among the available NL materials antimony glasses (AG) are emerging as promising systems for photonic applications. In the past, the research on Sb 2 O 3 -based glasses was dedicated mainly to the glass formation and their thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Antimony orthophosphate glasses with large nonlinear refractive indices, low two-photon absorption coefficients, and ultrafast response

Falcão-Filho¹,

Araújo²,

Bosco³

et al. 2004

Journal of Applied Physics

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Antimony glasses based on the composition Sb 2 O 3 -SbPO 4 were prepared and characterized. The samples present high refractive index, good transmission from 380 to 2000 nm, and high thermal stability. The nonlinear refractive index, n 2 , of the samples was studied using the optical Kerr shutter technique at 800 nm. The third-order correlation signals between pump and probe pulses indicate ultrafast response ͑Ͻ100 fs͒ for all compositions. Enhancement of n 2 was observed by adding lead oxide to the Sb 2 O 3 -SbPO 4 composition. Large values of n 2 Ϸ 10 −14 cm 2 / W and negligible two-photon absorption coefficients (smaller than 0.01 cm/ GW) were determined for all samples. The glass compositions studied present appropriate figure-of-merit for all-optical switching applications.

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“…Oddly, no satisfactory explanation has been given to date, as far as I know, not even in recent and complete works [9]; so it seems advisable to perform a detailed analysis of the problem and solve the doubts, since almost all subsequent works on this argument are based on Hellwarth studies [10,9,[11][12][13], and this form of the susceptibility is now used almost everywhere, in generalized Maxwell equations, to study the propagation and nonlinear effects in optical fibers [14][15][16][17][18][19][20][21][22][23][24][25].…”

mentioning

confidence: 99%

Third-order optical susceptibility: A comparison among various terms

Cacciari

2010

Optik

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Time-domain observation of nuclear contributions to the optical nonlinearities of glasses

Cited by 34 publications

References 20 publications

Third-order nonlinear optical response in transparent solids using ultrashort laser pulses

Third-order nonlinear optical response in transparent solids using ultrashort laser pulses

Antimony orthophosphate glasses with large nonlinear refractive indices, low two-photon absorption coefficients, and ultrafast response

Third-order optical susceptibility: A comparison among various terms

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