Presentation
17 March 2023 Femtosecond direct-write photo-conductive tracks on the surface of a tellurite glass
Author Affiliations +
Abstract
Tellurium (Te), an elemental van der Waals material with a p-type narrow bandgap is attractive for its strong photo-response, piezoelectric, and thermoelectric properties. Its oxide glassy form (TeO2) combines a wide optical transmission window with a high refractive index and nonlinear optical properties. Interestingly, as we showed in a previous study, upon femtosecond (fs) laser exposure, the glassy form of tellurite evolves into a functional Te/TeO2-based glass composite, as a consequence of elemental decomposition and crystallization of Te. By scanning the fs-laser over the tellurite glass, perfect ohmic contacts can be formed between arbitrary locations. Furthermore, we show that the Te micro-wires can have a highly reproducible and sensitive photo response from the near UV to the visible spectrum, and a robust reversible photo-switching behavior. The fs-laser direct-write glass/metalloid composite shows promising performance for novel photodetectors with an arbitrary design.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gözden Torun, Anastasia Romashkina, Loic Chautems, Tetsuo Kishi, and Yves Bellouard "Femtosecond direct-write photo-conductive tracks on the surface of a tellurite glass", Proc. SPIE PC12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII, PC124110P (17 March 2023); https://doi.org/10.1117/12.2649137
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KEYWORDS
Femtosecond phenomena

Glasses

Tellurium

Composites

Laser crystals

Refractive index

Semiconductors

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