Laser processing and electrical analysis of embedded graphitic wires in diamond

Marta Krüger; Martin J. Booth; Patrick S. Salter

doi:10.1117/12.2649050

17 March 2023 Laser processing and electrical analysis of embedded graphitic wires in diamond

Marta Krüger, Martin J. Booth, Patrick S. Salter

Proceedings Volume 12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII; 124110D (2023) https://doi.org/10.1117/12.2649050
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

Ultrafast laser writing enables fabrication of three-dimensional structures (sub-micron scale) inside the bulk of diamond. High intensities in the focal volume of the laser cause lattice breakdown; as a result, diamond is transformed into a graphitic phase. Laser written graphitic wires embedded in the single crystal diamond find an application for electrodes in diamond detectors. Laser processing of graphitic columns requires a combination of certain parameters, including power, repetition rate, translation speed. Here, we explore the effect of the laser pulse energy on the electrical resistance of laser written graphitic columns that pass through the thickness of a CVD single crystal slab. We introduce a scheme that allows straightforward electrical analysis of the columns in an all-carbon device, without additional processing of the diamond, that allows for rapid optimisation of the laser parameters.

Conference Presentation

Citation Download Citation

Marta Krüger, Martin J. Booth, and Patrick S. Salter "Laser processing and electrical analysis of embedded graphitic wires in diamond", Proc. SPIE 12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII, 124110D (17 March 2023); https://doi.org/10.1117/12.2649050

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