femtosecond laser-induced refractive index modification in multicomponent glasses

Beam collapse and refractive index changes inside fused silica induced ..- femtosecond laser-induced refractive index modification in multicomponent glasses ,In recent years, femtosecond laser micromachining has become an emerging technology in the field of material processing by means of focusing the beam on the surface or inside (transparent dielectrics) of the material []..Due to its micron-level focus volume, ultra-short laser–material interaction time, and the micron-scale modification induced in the structural and optical properties of the ..Ultrashort pulse-induced periodic nanostructures in bulk glass: from ..Here, three kinds of modifications can be induced.. Low laser pulse energies lead to an isotropic refractive index increase in the focal volume which, by translating the sample during irradiation, can serve as a waveguide and hence allow the fabrication of complex photonic networks [3, 4]..



Femtosecond laser-induced refractive index modification in .. - NASA/ADS

We present a comprehensive study on femtosecond laser-induced refractive index modification in a wide variety of multicomponent glasses grouped as borosilicate, aluminum-silicate, and heavy-metal oxide glasses along with lanthanum-borate and sodium-phosphate glasses.. By using high-spatial resolution refractive index profiling techniques, we demonstrate that under a wide range of writing ..

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Femtosecond laser-induced refractive index modification in ..

of positive and negative refractive index profiles with a spa-tial resolution of 400 at 633 nm and a low limit in the order of Dn,0..0005.. After the microreflectivity measurements, the glass

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Refractive index modification in fluoro-borate glasses .. - ScienceDirect

New glasses belonging to the NaF–Na2B4O7–WO3 system have been studied in order to inscribe optical waveguides within their volume through local refrac…

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Femtosecond laser-induced refractive index modification in ..

The lat- ter group mostly consists in laser modification of the material leading to relatively small alternation of the refractive index in glasses [5, 17], in silicon [8], or inside complex doped ..

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Structural relaxation phenomena in silicate glasses .. - Europe PMC

Structural relaxation phenomena in binary and multicomponent lithium silicate glasses were studied upon irradiation with femtosecond (fs) laser pulses (800 nm central wavelength, 130 fs pulse duration) and subsequent thermal annealing experiments.. .. Local changes in the refractive index of the laser-induced phase object produced in LNMS glass ..

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Femtosecond laser-induced refractive index modification in ..

The lat- ter group mostly consists in laser modification of the material leading to relatively small alternation of the refractive index in glasses [5, 17], in silicon [8], or inside complex doped ..

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Nonlinear Optics: Femtosecond lasers and nonlinear .. - Laser Focus World

Experiments proved that refractive-index changes up to +0..037 could be induced in cornea from different species, including porcine, leporine, feline, and human cadaver tissue using 405 nm femtosecond laser pulses at 80 MHz repetition rate.. 10

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Femtosecond Laser Pulse-Induced Structural Modification of Lanthanum ..

We studied femtosecond laser modifications of lanthanum aluminosilicate (SAL) glasses with 11–23 mol% La2O3 content.. Refractive indices of these glasses were measured in the visible and terahertz frequencies and correlated to the change in the glass structure.. The role of lanthanum provided a comparison to traditional glass modifiers within the glass network in terms of polarizability and ..

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Refractive index modification in fluoro-borate glasses .. - ScienceDirect

New glasses belonging to the NaF–Na2B4O7–WO3 system have been studied in order to inscribe optical waveguides within their volume through local refrac…

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Etching-assisted femtosecond laser modification of hard .. - OE Journal

Femtosecond laser-induced refractive index modification in multicomponent glasses.. J Appl Phys 97, 083102 (2005).. doi: 10..1063/1..1876578.. CrossRef Google Scholar [42] Flamini F, Magrini L, Rab A S, Spagnolo N, D'Ambrosio V et al.. Thermally reconfigurable quantum photonic circuits at telecom wavelength by femtosecond laser micromachining..

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Femtosecond Laser‐Induced Refractive Index .. - Wiley Online Library

Furthermore, the values of refractive index and Abbe number that we obtained (i..e.., RI = 1..72, ν D = 20..1 for the pristine hybrid 60 vol%, and RI = 1..85, ν D = 14..9 for laser-processed films) are on par with state-of-the-art materials, [3, 6, 41-44] with the additional benefits offered by the possibility to locally modify material properties ..

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Femtosecond Laser Modification of Antimony-Containing .. - SpringerLink

The series of works [7,8,9] is devoted to studies of the laser modification of binary titanium silicate glass with zero index of refraction (ULE glass), for which laser-induced effects, such as a change of the refractive index, formation of nanolattices, and controlled local darkening, have been demonstrated..However, the technology for producing ULE glass is complex because of the high ..

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Femtosecond laser-induced refractive index modification in ..

of positive and negative refractive index profiles with a spa-tial resolution of 400 at 633 nm and a low limit in the order of Dn,0..0005.. After the microreflectivity measurements, the glass

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Angular Scattering Pattern of Femtosecond Laser‐Induced Refractive ..

The focused femtosecond laser irradiation produces a localized refractive index modification in the fiber core, which can be imaged with phase contrast microscopy, as shown in Figure 3.. In all observed instances, the modifications have a very similar shape, but the interior consists of refractive index fluctuations which differ significantly ..

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Femtosecond laser writing of waveguide structures in sodium calcium ..

Refractive index changes have been induced inside bulk fused silica by using femtosecond (fs) laser pulses tightly focused inside the material.. Waveguides have been fabricated inside the glass by scanning the glass with respect to the focal point of the laser beam.. The refractive index change is estimated to be {approx} 10{sup -4}..

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femtosecond laser modification - OE Journals

changes would lead to the refractive index change in silica and has been expanded to various transparent materi-als34–38.. Based on the laser induced refractive change, var-ious optical devices are fabricated by femtosecond laser modification, including optical storage devices, wave-guides, photonic crystals and micro-optical elements39–44..

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Refractive Index Modification - an overview | ScienceDirect Topics

An isotropic regime of modification is useful for optical waveguides, where smooth and uniform refractive index modification is required for low propagation loss.. At low pulse energies just above the modification threshold (~ 100 nJ for 0..6-NA focusing of 800-nm, 100-fs pulses), a smooth refractive index modification has been observed in fused ..

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Refractive Index Modification - an overview | ScienceDirect Topics

An isotropic regime of modification is useful for optical waveguides, where smooth and uniform refractive index modification is required for low propagation loss.. At low pulse energies just above the modification threshold (~ 100 nJ for 0..6-NA focusing of 800-nm, 100-fs pulses), a smooth refractive index modification has been observed in fused ..

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Direct writing of birefringent elements by ultrafast laser ..

Femtosecond laser-induced refractive index modification in multicomponent glasses J.. Appl.. Phys.. 97, 083102 (2005); 10..1063/1..1876578 Femtosecond laser-pulse-induced birefringence in optically isotropic glass J.. Appl.. Phys.. 95, 5280 (2004); 10..1063/1..1707231 .. and two multicomponent borosilicate glasses (BK7 and Borofloat 33, Schott) ..

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(PDF) Refractive index modification in fluoro-borate glasses containing ..

Refractive index modification in fluoro-borate glasses containing WO3 induced by femtosecond laser.. Journal of Non-Crystalline Solids, 2014.. Yannick Ledemi.. Younes Messaddeq.. .. Third-order nonlinear spectra and optical limiting of lead oxifluoroborate glasses.. By Leonardo Boni.. Tungsten-based glasses for photochromic, electrochromic, gas ..

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Structural relaxation phenomena in silicate glasses modified by ..

The fs-laser induced structural modification translates into a refractive index change which is the cornerstone of a multitude of applications such as optical waveguides 6,7, optical couplers 8,9 ..

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105692 PDFs | Review articles in REFRACTIVE INDEX

Explore the latest full-text research PDFs, articles, conference papers, preprints and more on REFRACTIVE INDEX.. Find methods information, sources, references or conduct a literature review on ..

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Femtosecond laser-induced refractive index modification in ..

We present a comprehensive study on femtosecond laser-induced refractive index modification in a wide variety of multicomponent glasses grouped as borosilicate, aluminum–silicate, and heavy-metal oxide glasses along with lanthanum–borate and sodium–phosphate glasses.. By using high-spatial resolution refractive index profiling techniques, we demonstrate that under a wide range of writing ..

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(PDF) Refractive index modification in fluoro-borate glasses containing ..

Refractive index modification in fluoro-borate glasses containing WO3 induced by femtosecond laser.. Journal of Non-Crystalline Solids, 2014.. Yannick Ledemi.. Younes Messaddeq.. .. Third-order nonlinear spectra and optical limiting of lead oxifluoroborate glasses.. By Leonardo Boni.. Tungsten-based glasses for photochromic, electrochromic, gas ..

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