Journal ArticleDOI
Direct laser writing of near-IR step-index buried channel waveguides in rare earth doped YAG.
Airan Rodenas,Antonio Benayas,John R. Macdonald,Jian Zhang,Dingyuan Tang,Daniel Jaque,Ajoy K. Kar +6 more
TLDR
A new (to the authors' knowledge) ultrashort laser pulse irradiation regime that allows us to directly modify and increase the refractive index of rare earth doped YAG polycrystalline ceramics has been identified.Abstract:
A new (to our knowledge) ultrashort laser pulse irradiation regime that allows us to directly modify and increase the refractive index of rare earth doped YAG polycrystalline ceramics has been identified. Single-mode buried channel waveguides in both Ho:YAG and Er:YAG ceramics at the near-IR wavelengths of 1.55 μm and 1.95 μm are demonstrated by fabricating positive square step-index cores. Minimum propagation losses of 1.5 dB cm−1 at a 1.51 μm wavelength have been preliminarily obtained. Confocal microluminescence mapping reveals that the increased refractive index regions retain the near-IR spectral properties of Er3+ ions in the YAG crystalline matrix.read more
Citations
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Optical waveguides in crystalline dielectric materials produced by femtosecond-laser micromachining
TL;DR: A review of the state-of-the-art in the fabrication, characterization and applications of femtosecond-laser micromachined waveguiding structures in optical crystals and ceramics is presented in this article.
Journal ArticleDOI
Ultrafast laser inscription: perspectives on future integrated applications
TL;DR: This paper reviews the recent advancements achieved using ultrafast laser inscription (ULI) that highlight the cross-disciplinary potential of the technology and focuses on two key emergent technologies driven by ULI processes.
Journal ArticleDOI
Ultrafast-laser-inscribed 3D integrated photonics: challenges and emerging applications
Simon Gross,Michael J. Withford +1 more
TL;DR: In this paper, the basic techniques and technological challenges of 3D integrated photonics fabricated using ultrafast laser inscription are reviewed as well as the most recent progress in the fields of astrophotonics, optical communication, quantum photonics, emulation of quantum systems, optofluidics and sensing.
Journal ArticleDOI
Three-dimensional femtosecond laser nanolithography of crystals
TL;DR: In this paper, the inner chemical etching reactivity of a crystal can be enhanced at the nanoscale by means of direct laser writing, which allows to produce cm-scale arbitrary three-dimensional nanostructures with 100 nm feature sizes inside large crystals in absence of brittle fracture.
Journal ArticleDOI
Femtosecond laser inscribed cladding waveguides in Nd:YAG ceramics: Fabrication, fluorescence imaging and laser performance
TL;DR: The confocal fluorescence measurements of the waveguide reveal that the original luminescence features of Nd3+ ions are well-preserved in the waveguide regions, suggesting that the fabricated Nd:YAG ceramic waveguides are promising candidates for efficient integrated laser sources.
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.
Journal ArticleDOI
Ultrafast laser inscription of an integrated photonic lantern
TL;DR: This work used ultrafast laser inscription to fabricate three-dimensional integrated optical transitions that efficiently couple light from a multimode waveguide to a two-dimensional array of single mode waveguides and back.
Journal ArticleDOI
Efficient frequency doubling in femtosecond laser-written waveguides in lithium niobate
TL;DR: Optical waveguides in lithium niobate have been fabricated with a femtosecond laser and different types of modifications depending on the laser parameters were observed and discussed in this paper.
Journal ArticleDOI
Highly efficient laser action in femtosecond-written Nd:yttrium aluminum garnet ceramic waveguides
Gustavo Adrián Torchia,Airan Rodenas,Antonio Benayas,Eugenio Cantelar,Luis Roso,Daniel Jaque +5 more
TL;DR: In this article, the authors reported continuous wave 1.06μm laser operation in an optical waveguide fabricated in a Nd:YAG ceramic by femtosecond laser writing.
Journal ArticleDOI
Refractive index change mechanisms in femtosecond laser written ceramic Nd:YAG waveguides: micro-spectroscopy experiments and beam propagation calculations
Airan Rodenas,Gustavo Adrián Torchia,Gustavo Adrián Torchia,Ginés Lifante,Eugenio Cantelar,J. Lamela,F. Jaque,Luis Roso,Daniel Jaque +8 more
TL;DR: In this article, the effect of femtosecond laser filamentation has on the refractive index of Nd:YAG ceramics, and which leads to the formation of waveguide lasers, has been studied by micro-spectroscopy imaging, beam propagation experiments and calculations.