Femtosecond direct-write photo-conductive tracks on the surface of a tellurite glass

Gözden Torun; Anastasia Romashkina; Loic Chautems; Tetsuo Kishi; Yves Bellouard

doi:10.1117/12.2649137

17 March 2023 Femtosecond direct-write photo-conductive tracks on the surface of a tellurite glass

Gözden Torun, Anastasia Romashkina, Loic Chautems, Tetsuo Kishi, Yves Bellouard

Proceedings Volume PC12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII; PC124110P (2023) https://doi.org/10.1117/12.2649137
Event: SPIE LASE, 2023, San Francisco, California, United States

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

Citation Download Citation

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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