Large negative refractive index modification induced by irra .. - femtosecond laser-induced refractive index modification in multicomponent glasses ,Research highlights The refractive index modification (Δn) inside a several optical glasses were investigated.. The Δn was fabricated by the irradiation of femtosecond laser pulses.. The glasses were silicate or borosilicate system containing BaO, TiO 2, or La 2 O 3 as a metal oxide.. The Δn and the profiles were measured with the qualitative phase microscopy.. A glass containing TiO 2 showed ..Femtosecond-laser-induced refractive index modifications for .. Mechanism of femtosecond-laser induced refractive index change in phosphate glass under a low repetition-rate regime Journal of Applied Physics , 108 ( 2010 ) , pp.. 033110 - 033115 CrossRef View Record in Scopus Google Scholar
Left axis: refractive index of ZnSe as a function of the propagating wavelength using the Sellmeier coefficient from ref.. 33 (black curve).. Potential effects of the fs-laser-induced variation in ..
We also demonstrate direct writing of waveguides in photosensitive Foturan® glass with a femtosecond laser without initiating crystallization by thermal treatment.. Upon ceramization of lithium–aluminum–silicate glasses such as Foturan®, Zerodur®, and Robax® we observe switching of laser-induced refractive index change from being positive to negative..
Tightly focused femtosecond laser pulses can be used to alter the refractive index of virtually all optical glasses.. As the laser-induced modification is spatially limited to the focal volume of the writing beam, this technique enables the fabrication of fully three-dimensional photonic structures and devices that are automatically embedded within the host material..
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 o.. V.. R.. Bhardwaj, E.. Simova a), P.. B.. Corkum, and D.. M.. Rayner ..
The interaction of focused 800 nm femtosecond (fs) laser pulses at low (1–45 kHz) and moderate (50–250 kHz) repetition rates with fluoride (ZBLAN-type) bulk glass is investigated in detail.. It is shown that at repetition rates lower than ~50 kHz and low pulse energies, the refractive index change induced by pulse filamentation is mainly negative at the irradiated zone.. At repetition rates ..
DOI: 10..1016/J..JNONCRYSOL..2007..01..098 Corpus ID: 137391445 Femtosecond laser modification of glass @article{Krol2008FemtosecondLM, title={Femtosecond laser modification of glass}, author={Denise M.. Krol}, journal={Journal of Non-crystalline Solids
Femtosecond laser-induced refractive index modification in multicomponent glasses V.. R.. Bhardwaj, E.. Simova,a! P.. B.. Corkum, and D.. M.. Rayner Steacie Institute for ..
Luo, F.. et al.. Femtosecond laser-induced inverted microstructures inside glasses by tuning refractive index of objective’s immersion liquid.. Opt.. Lett.. 36 , 2125 (2011)..
Femtosecond laser patterning of these sol–gel precursors allowed to obtain complex photonic structures with resolution down to 0..2 μm thanks to the high numerical aperture (NA) of the objective lens required to implement the two to three multiphoton [] n ≈ 10 −2..
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 from one modification to the next..
New glasses belonging to the NaF–Na 2 B 4 O 7 –WO 3 system have been studied in order to inscribe optical waveguides within their volume through local refractive index modification after irradiation by ultrafast laser pulses.. Appropriate addition of NaF to glasses ..
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 ..
4..1.. Device applications.. Over the past 10 years most of the activity in fs-laser modification of glass has focused on fabrication of photonic devices.. All these devices make use of the fact that the focused fs-laser can locally modify the refractive index of a glass with micron-size precision..
Article “Femtosecond laser-induced refractive index modification in multicomponent glasses” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto ..
This self-organized nanostructure may successfully explain the origin of the laser-induced birefringence in this multicomponent glass quite differently from pure silica.. These findings highlight a spectacular modification of glass, and enable construction of a high contrast three-dimensional refractive index and birefringent structures at the micrometer scale in multicomponent glasses..
We also demonstrate direct writing of waveguides in photosensitive Foturan® glass with a femtosecond laser without initiating crystallization by thermal treatment.. Upon ceramization of lithium–aluminum–silicate glasses such as Foturan®, Zerodur®, and Robax® we observe switching of laser-induced refractive index change from being positive to negative..
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 ..
Refractive index modification in fluoro-borate glasses containing WO3 induced by femtosecond laser .. × Close Log In Log in with Facebook Log in with Google or Email Password Remember me on this computer or reset password Enter the email address you ..
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 ..
The interaction of focused 800 nm femtosecond (fs) laser pulses at low (1–45 kHz) and moderate (50–250 kHz) repetition rates with fluoride (ZBLAN-type) bulk glass is investigated in detail.. It is shown that at repetition rates lower than ~50 kHz and low pulse energies, the refractive index change induced by pulse filamentation is mainly negative at the irradiated zone.. At repetition rates ..
Article “Femtosecond laser-induced refractive index modification in multicomponent glasses” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto ..
“Femtosecond Laser Pulse-Induced Structural Modification of Lanthanum Aluminosilicate Glasses: Refractive Indices in Visible Vs.. Terahertz Frequency Regions..” Journal of Infrared, Millimeter, and Terahertz Waves 41, no.. 2 (2020): 171-193..
Mechanism of femtosecond-laser induced refractive index change in phosphate glass under a low repetition-rate regime Journal of Applied Physics , 108 ( 2010 ) , pp.. 033110 - 033115 CrossRef View Record in Scopus Google Scholar
Refractive index modification in fluoro-borate glasses containing WO3 induced by femtosecond laser .. × Close Log In Log in with Facebook Log in with Google or Email Password Remember me on this computer or reset password Enter the email address you ..
