Fluorescent nanodiamonds as quantum sensors: effects of infrared illumination

Mukherjee, S and Vashist, E and Ghosh, A (2022) Fluorescent nanodiamonds as quantum sensors: effects of infrared illumination. In: 2022 IEEE International Conference on Emerging Electronics, ICEE 2022, 11 -14 Dec 2022, Bangalore.

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Abstract

Nitrogen-vacancy (NV) centers in nanodiamonds (NDs) have emerged as powerful quantum sensors, with diverse capabilities in nano-scale sensing of physical quantities (like temperature, magnetic or electric fields), even in the fluidic medium. We, in this work, study the effects of continuous infrared (IR) illumination on ND photoluminescence (Pl) and the simultaneous effects on the contrast in optically detected magnetic resonance (ODMR) signal. Our study suggests a similar decreasing trend in both the Pl and the ODMR contrast with increasing IR powers. The dependence of ODMR contrast on IR power is seen to be more sensitive and robust. Simultaneous NV-based temperature measurements on the NDs showed no substantial change in temperature. This further indicates that such quenching effects are not a result of the heating of the NDs.

Item Type:	Conference Paper
Publication:	2022 IEEE International Conference on Emerging Electronics, ICEE 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	fluorescence quenching; In-frared; nanodiamonds; Nitrogen-vacancy centers; ODMR contrast
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering Division of Physical & Mathematical Sciences > Physics
Date Deposited:	27 Jun 2023 06:34
Last Modified:	27 Jun 2023 06:34
URI:	https://eprints.iisc.ac.in/id/eprint/82169

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