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13 March 2024 Fabrication, characterization, and applications of laser-induced surface waveguides in fused silica
Alexandre Mermillod-Blondin, Laura Rammelt, Federico J. Furch, Ananga-Mohan Datta, W. Dieter Engel, Kurt Busch, Marc J. J. Vrakking
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Proceedings Volume PC12873, Laser-based Micro- and Nanoprocessing XVIII; PC128730N (2024) https://doi.org/10.1117/12.3002309
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
We irradiate the surface of pure fused silica with few-cycle pulses (duration < 10 fs, central wavelength at 800 nm, repetition of 400 kHz and a pulse energy of ca. 1 µJ) focused at a quasi grating incidence and observe a permanent densification in the irradiated region. A translation of the sample in the direction of the laser results in the direct writing of surface waveguides. The eigen modes of such structures exhibit a pronounced sensitivity to the refractive index of the immediate environment which we exploit to demonstrate direct refractive index sensing as well as plasmonic sensing.
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Alexandre Mermillod-Blondin, Laura Rammelt, Federico J. Furch, Ananga-Mohan Datta, W. Dieter Engel, Kurt Busch, and Marc J. J. Vrakking "Fabrication, characterization, and applications of laser-induced surface waveguides in fused silica", Proc. SPIE PC12873, Laser-based Micro- and Nanoprocessing XVIII, PC128730N (13 March 2024); https://doi.org/10.1117/12.3002309
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KEYWORDS
Silica
Waveguides
Laser irradiation
Fabrication
Laser applications
Laser ablation
Pulsed laser operation
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