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Direct laser-writing of ferroelectric single-crystal waveguide architectures in glass for 3D integrated optics

Adam Stone, Himanshu Jain, Volkmar Dierolf, Masaaki Sakakura, Yasuhiko Shimotsuma, Kiyotaka Miura, Kazuyuki Hirao, Jerome Lapointe and Raman Kashyap

Article (2015)

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Cite this document: Stone, A., Jain, H., Dierolf, V., Sakakura, M., Shimotsuma, Y., Miura, K., ... Kashyap, R. (2015). Direct laser-writing of ferroelectric single-crystal waveguide architectures in glass for 3D integrated optics. Scientific Reports, 5. doi:10.1038/srep10391
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Abstract

Direct three-dimensional laser writing of amorphous waveguides inside glass has been studied intensely as an attractive route for fabricating photonic integrated circuits. However, achieving essential nonlinear-optic functionality in such devices will also require the ability to create high-quality single-crystal waveguides. Femtosecond laser irradiation is capable of crystallizing glass in 3D, but producing optical-quality single-crystal structures suitable for waveguiding poses unique challenges that are unprecedented in the field of crystal growth. In this work, we use a high angular-resolution electron diffraction method to obtain the first conclusive confirmation that uniform single crystals can be grown inside glass by femtosecond laser writing under optimized conditions. We confirm waveguiding capability and present the first quantitative measurement of power transmission through a laser-written crystal-in-glass waveguide, yielding loss of 2.64 dB/cm at 1530 nm. We demonstrate uniformity of the crystal cross-section down the length of the waveguide and quantify its birefringence. Finally, as a proof-of-concept for patterning more complex device geometries, we demonstrate the use of dynamic phase modulation to grow symmetric crystal junctions with single-pass writing.

Open Access document in PolyPublie
Subjects: 2500 Génie électrique et électronique > 2500 Génie électrique et électronique
2500 Génie électrique et électronique > 2524 Applications et dispositifs ultrasoniques et ferroélectriques
3100 Physique > 3100 Physique
Department: Département de génie électrique
Département de génie physique
Research Center: Non applicable
Funders: National Science Foundation for the work at Lehigh University, International Materials Institute for New Functionality in Glass (IMI-NFG)
Grant number: DMR-0906763, DMR-0844014
Date Deposited: 23 Nov 2018 10:01
Last Modified: 24 Nov 2018 01:20
PolyPublie URL: https://publications.polymtl.ca/3489/
Document issued by the official publisher
Journal Title: Scientific Reports (vol. 5)
Publisher: Nature Publishing Group
Official URL: https://doi.org/10.1038/srep10391

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