[1] [1] BUCHER D B, CRAIK D P L A, BACKLUND M P, et al. Quantum diamond spectrometer for nanoscale NMR and ESR spectroscopy[J]. Nature protocols, 2019, 14(9): 2707-2747.

[2] [2] BARRY J F, SCHLOSS J M, BAUCH E, et al. Sensitivity optimization for NV-diamond magnetometry[J]. Reviews of modern physics, 2020, 92(1).

[3] [3] HOMRIGHAUSEN J. Compact and fully integrated LED quantum sensor based on NV centers in diamond[J]. Sensors, 2024, 24(3).

[4] [4] YANAGI T, KAMINAGA K, KADA W, et al. Optimization of wide-field ODMR measurements using fluorescent nanodiamonds to improve temperature determination accuracy[J]. Nanomaterials, 2020, 10(11): 2282.

[5] [5] GLENN D R, FU R R, KEHAYIAS P, et al. Micrometer-scale magnetic imaging of geological samples using a quantum diamond microscope[J]. Geochemistry, geophysics, geosystems, 2017, 18(8): 3254-3267.

[6] [6] SCHMIDT P, CLARK D, LESLIE K, et al. GETMAG-a SQUID magnetic tensor gradiometer for mineral and oil exploration[J]. Exploration geophysics, 2018, 35(4): 297-305.

[7] [7] LAMICHHANE S, TIMALSINA R, SCHULTZ C, et al. Nitrogen-vacancy magnetic relaxometry of nanoclustered cytochrome C proteins[J]. Nano letters, 2024, 24(3): 873-880.

[8] [8] ZHANG C, ZHANG J, WIDMANN M, et al. Optimizing NV magnetometry for magnetoneurography and magnetomyography applications[J]. Frontiers in neuroscience, 2023, 16.

[9] [9] FAN S Y, GAO H, ZHANG Y, et al. Quantum sensing of free radical generation in mitochondria of single heart muscle cells during hypoxia and reoxygenation[J]. ACS nano, 2024, 18(4): 2982-2991.

[10] [10] AMAWI M, TRELIN A, HUANG Y, et al. Three-dimensional magnetic resonance tomography with sub-10 nanometer resolution[J]. NPJ quantum information, 2024, 10(1).

[11] [11] DEGUCHI H, HAYASHI T, SAITO H, et al. Compact and portable quantum sensor module using diamond NV centers[J]. Applied physics express, 2023, 16(6).

[12] [12] ZHANG Z, XU R, ZHANG Y, et al. Design of NV centers integrated magnetometer and high-resolution output module based on the ODMR system[J]. IEEE sensors journal, 2023, 23(6): 6150-6155.

[13] [13] GAO X, YU C, ZHANG S, et al. High sensitivity of diamond nitrogen-vacancy magnetometer with magnetic flux concentrators via enhanced fluorescence collection[J]. Diamond and related materials, 2023, 139: 110348.

[14] [14] ZHANG J, YUAN H, ZHANG N, et al. A modified spin pulsed readout method for NV center ensembles reducing optical noise[J]. IEEE transactions on instrumentation and measurement, 2020, 69(7): 4370-4378.

[15] [15] KIM D C, CHI Y E, PARK J, et al. High-resolution digital beamforming receiver using DDS-PLL signal generator for 5G mobile communication[J]. IEEE transactions on antennas and propagation, 2022, 70(2): 1428-1439.

[16] [16] POLLASTRONE F, PICCININI M, PIZZOFERRATO R, et al. Fully-digital low-frequency lock-in amplifier for photoluminescence measurements[J]. Analog integrated circuits and signal processing, 2023, 115(1): 67-76.

[17] [17] MENG Z, HE X, LI Y, et al. A multi-contaminants detection sensor based on digital lock-in amplifier module with high sensitivity and high detectability[J]. IEEE sensors journal, 2023, 23(14): 16123-16135.

[18] [18] WANG Z, SHI X, WANG W, et al. High-performance digital lock-in amplifier module based on an open-source red pitaya platform: implementation and applications[J]. IEEE transactions on instrumentation and measurement, 2023, 72: 1-14.

[19] [19] RODRGUEZ M J, POSADAS C C, ZAMBRANO S E. Alternative method to estimate the Fourier expansions and its rate of change[J]. Mathematics, 2022, 10(20).

[20] [20] LANCE A L S, WENDELL D, LABAAR F. Phase noise and AM noise measurements in the frequency domain[J]. Infrared and millimeter waves, 1984, 11.

[21] [21] STIMPSON G A, SKILBECK M S, PATEL R L, et al. An open-source high-frequency lock-in amplifier[J]. Review of scientific instruments, 2019, 90(9): 094701.