Nonlinear refractive index study on SiO_2-Al_2O_3-La_2O_3 glasses

Karras, Christian; Litzkendorf, D.; Grimm, Stephan; Schuster, Kay; Paa, W.; Stafast, H.

doi:10.1364/ome.4.002066

Cited by 20 publications

(10 citation statements)

References 47 publications

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“…For the purposes here, this suggests that glasses exhibiting lower index and dispersion values are preferred. Assuming conventional glass composition/property additivity, this generalized trend in n 2 with n and ν, multicomponent (silicate) glasses with low electronic polarizability compounds, such as alkali‐ and alkaline‐earth fluorides could balance out components that otherwise raise n 2 values relative to SiO 2 , such as La 2 O 3 or GeO 2 …”

Section: Thermodynamics Of Optical Scattering and Impact On Optical Nmentioning

confidence: 83%

A unified materials approach to mitigating optical nonlinearities in optical fiber. I. Thermodynamics of optical scattering

Ballato

Cavillon

Dragic

2017

Int J of Appl Glass Sci

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Sustained progress in the development of optical fibers has led to the present state where further improvements in performance are limited by intrinsic optical nonlinearities. In order to circumvent such limitations, the user community has adopted two general approaches: (i) engineer the enabled systems accordingly; and/or (ii) microstructure the fiber to shift nonlinear thresholds to high optical power levels. In both cases, the nonlinearities are accepted as they are and performance is enhanced through added system or fiber design complexity. This paper, the first in a trilogy, along with two companion articles (in 3 parts) (Int J Appl Glass Sci.

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Section: Thermodynamics Of Optical Scattering and Impact On Optical Nmentioning

confidence: 83%

A unified materials approach to mitigating optical nonlinearities in optical fiber. I. Thermodynamics of optical scattering

Ballato

Cavillon

Dragic

2017

Int J of Appl Glass Sci

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“…Max. thickness (×10 −16 cm 2 /W) fluence (J/cm 2 ) (µm) 500 fs, 1054 nm 2.74 ± 0.17 [10] 0.6 510 50 fs, 800 nm 3.0 ± 0.1 [11] 0.3 93 Figure 1. A smooth electron density distribution generated at the back of a target by a periodic illumination pattern of period 10 µm.…”

Section: Laser Typementioning

confidence: 99%

Implementation of a phase plate for the generation of homogeneous focal-spot intensity distributions at the high-energy short-pulse laser facility PHELIX

Bagnoud

Hornung

Afshari

et al. 2019

High Pow Laser Sci Eng

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We propose and demonstrate the use of random phase plates (RPPs) for high-energy sub-picosecond lasers. Contrarily to previous work related to nanosecond lasers, an RPP poses technical challenges with ultrashort-pulse lasers. Here, we implement the RPP near the beginning of the amplifier and image-relay it throughout the laser amplifier. With this, we obtain a uniform intensity distribution in the focus over an area 1600 times the diffraction limit. This method shows no significant drawbacks for the laser and it has been implemented at the PHELIX laser facility where it is now available for users.

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“…We also acknowledge an anonymous reviewer for helpful comments. [42] and La [43,44] aluminosilicates; Ca, La and Y aluminoborosilicates with r BS =0.5, 0.7 [1]; and Ca [45], La [12] and Y [11] aluminoborates. Error bars are smaller than the symbols.…”

Section: Acknowledgementsmentioning

confidence: 99%

Separating the effects of composition and fictive temperature on Al and B coordination in Ca, La, Y aluminosilicate, aluminoborosilicate and aluminoborate glasses

Morin

Stebbins

2016

Journal of Non-Crystalline Solids

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Glass transition temperatures often change significantly (100's of degrees) as the boron oxide to silica ratio, or the field strength of the modifier oxide, is varied in aluminoborosilicate glasses. At the same time, fictive temperature itself can strongly affect the glass structure, most notably in the coordination environments of the network cations boron and aluminum. The latter are especially significant when proportions of [5] Al (AlO 5 groups) and [6] Al (AlO 6 groups) are high, as in glasses with high field-strength (small, highly charged) modifier cations. To obtain a clearer picture of how composition and temperature independently control structure, we present new data from differential scanning calorimetric (DSC) and high-field 11 B and 27 Al NMR on a series of Ca, La, and Y aluminosilicate, aluminoborosilicate and aluminoborate glasses prepared with different cooling rates, and compare results in detail with other recently published data on the same compositional joins. We find that previous, apparently disparate results on effects of temperature on Al coordination are in fact related to B/Si ratios: average Al coordination number increased with increased T in aluminosilicates and low-B aluminoborosilicates, but decreased with increased T in glasses with high B/Si ratios, indicating some interaction of the two network cations. We find that effects of T on boron coordination (always lower at higher T) are consistent with a simple thermodynamic view, but may be difficult to detect in some compositions simply because of relative proportions of species. We confirm as well that in boron-rich aluminoborosilicates, B and Al coordination number decreases with increasing temperature are quantitatively linked when calculated per formula unit, again suggesting a strong coupling, and that Al coordination systematically increases with modifier field strength and B 2 O 3 /SiO 2 ratio.

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Nonlinear refractive index study on SiO_2-Al_2O_3-La_2O_3 glasses

Cited by 20 publications

References 47 publications

A unified materials approach to mitigating optical nonlinearities in optical fiber. I. Thermodynamics of optical scattering

A unified materials approach to mitigating optical nonlinearities in optical fiber. I. Thermodynamics of optical scattering

Implementation of a phase plate for the generation of homogeneous focal-spot intensity distributions at the high-energy short-pulse laser facility PHELIX

Separating the effects of composition and fictive temperature on Al and B coordination in Ca, La, Y aluminosilicate, aluminoborosilicate and aluminoborate glasses

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