Abstract
Abstract
We demonstrate a method for thermal detection that is the sensitivity 6.2 mK Hz−1 2, which uses the frequency lock closed-loop scheme to track Zeeman-split resonance of nitrogen-vacancy (NV) centers in diamond. The NV diamond surface acts as a temperature measurement sensor to transfer the temperature variation as D(T) parameter change to lead to the movement of the energy levels to detect the temperature. By frequency modulation technology and closed-loop feedback locking technology, automatic temperature detection and step signal reading are realized, with a resolution of 7.6 mK. It is found that the closed-loop output is basically unchanged, while the open-loop output has an error signal proportional to the laser fluctuation. The closed-loop feedback technique can improve the stability and resolution of the system and provides a method for measuring the actual temperature detection. Such a demonstration marks a vital advance in transitioning the NV thermometer from a laboratory system to a functional device for detecting temperature fields in a practical environment.
Funder
the Special Fund for Research on National Major Research Instruments and Facilities of the National Natural Science Foundation of China
the Fund for Shanxi “1331 Project” Key Subjects Construction, China.
the Key Laboratory of Shanxi Province, China
the National Natural Science Foundation of China
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
1 articles.
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