Journal ArticleDOI
Fabrication of microchannels in glass using focused femtosecond laser radiation and selective chemical etching
Cyril Hnatovsky,Roderick S. Taylor,Eli S. Simova,P. P. Rajeev,David M. Rayner,V. R. Bhardwaj,Paul B. Corkum +6 more
TLDR
In this paper, the combination of femtosecond laser dielectric modification and selective chemical etching was used to fabricate high-quality microchannels in glass, and the optimum irradiation conditions needed to produce high-aspect ratio micro-channels with small symmetric cross-sections and smooth walls.Abstract:
We use the combination of femtosecond laser dielectric modification and selective chemical etching to fabricate high-quality microchannels in glass. The photoinduced modification morphology has been studied in fused silica and in borosilicate glass BK7, using ultra-high spatial resolution techniques of selective chemical etching followed by atomic force or scanning electron microscopy. The analysis shows that the high differential etch rate inside the modified regions, is determined by the presence of polarization-dependent self-ordered periodic nanocracks or nanoporous structures. We also investigate the optimum irradiation conditions needed to produce high-aspect ratio microchannels with small symmetric cross-sections and smooth walls.read more
Citations
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Journal ArticleDOI
Transition from thermal diffusion to heat accumulation in high repetition rate femtosecond laser writing of buried optical waveguides
TL;DR: Waveguide morphology and thermal modeling indicate that strong thermal diffusion effects at 200 kHz give way to a weak heat accumulation effect at approximately 1 microJ pulse energy for generating low loss waveguides, while stronger heat accumulation effects above 1-MHz repetition rate offered overall superior guiding.
Journal ArticleDOI
Applications of femtosecond laser induced self-organized planar nanocracks inside fused silica glass
TL;DR: In this paper, the femtosecond laser induced self-organized planar cracks inside fused silica glass are analyzed using form birefringence and shown that the high degree of control over these self-replicated periodic structures allows them to investigate applications in micro- and nanofluidics, porous capillaries for biofiltering and rewritable data storage for harsh environments.
Journal ArticleDOI
Femtosecond laser microstructuring: an enabling tool for optofluidic lab-on-chips
TL;DR: The state of the art of femtosecond laser fabrication of optical waveguides and microfluidic channels, as well as their integration for high sensitivity detection of biomolecules and for cell manipulation, can be found in this article.
Journal ArticleDOI
Surface and bulk structuring of materials by ripples with long and short laser pulses: Recent advances
TL;DR: In this paper, a critical review of ripple formation mechanisms is presented, discussed, and formation conjectures are presented, and it is shown that formation of plasma at subcritical or critical densities on the surface and in the bulk specific to the high-intensity ultra-short laser pulses has to be considered to account for the experimental observations.
Journal ArticleDOI
Femtosecond laser induced phenomena in transparent solid materials: Fundamentals and applications
TL;DR: In this paper, the authors present a critical overview of the current state of the art in studying femtosecond laser induced various phenomena in transparent materials, including their physical and chemical mechanisms, the applications and limitations as well as the future research trends.
References
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Journal ArticleDOI
Writing waveguides in glass with a femtosecond laser
TL;DR: The results suggest that multiphoton interactions occur in the glasses and that it may be possible to write three-dimensional optical circuits in bulk glasses with such a focused laser beam technique.
Book
Thin Film Processes
TL;DR: In this article, the authors discuss the formation of Inorganic Films by Remote Plasma-Enhanced Chemical-Vapor Deposition (PLVD) and its application in solvent-gel coatings.
Journal ArticleDOI
Laser-induced periodic surface structure. I. Theory
TL;DR: In this paper, a theory for laser-induced periodic surface structure was developed by associating each Fourier component of induced structure with the corresponding Fourier components of inhomogeneous energy deposition just beneath the surface.
Journal ArticleDOI
Self-organized nanogratings in glass irradiated by ultrashort light pulses
TL;DR: Periodic nanostructures are observed inside silica glass after irradiation by a focused beam of a femtosecond Ti:sapphire laser, resulting in the periodic modulation of electron plasma concentration and the structural changes in glass.
Journal ArticleDOI
Three-dimensional optical storage inside transparent materials.
Eli N. Glezer,Milos Milosavljevic,L. Huang,Richard J. Finlay,Tsing-Hua Her,J. P. Callan,Eric Mazur +6 more
TL;DR: A novel method for three-dimensional optical data storage that has submicrometer size resolution, provides a large contrast in index of refraction, and is applicable to a wide range of transparent materials is presented.