Abstract：In high-precision atomic magnetometer, because the temperature of the atomic gas chamber directly affects the polarization of the electron spin of alkali metal, and then affects the sensitivity of the magnetometer, precisely controlling the temperature of the atomic gas chamber is the key to realize the application of high-precision atomic magnetometer. Based on the principle of electric heating and the principle of back-folding magnetic cancellation,the micro weak magnetic electric heating chips with single-layer and double-layer structures are designed and completed through the derivation of Biot-Savart law and simplified model simulation. By measuring the magnetic flux density modes at different distances and different current conditions on the surface of single and double-layer chips,the suppression effect of the single and double-layer coil structure on the magnetic field generated by the current is verified. The double-layer heating chip is about 6.9 times higher than the electric heating remanence suppression characteristics of the folding chip.The magnetic field change rate at 5mm from the chip is only 72.2nT/A.By comparing the heating effect of the same working current at the same time,it can be found that the double-layer has a faster temperature response.
闫晓燕,梁时硕,刘雨奇,郭琦. 基于磁控溅射的弱电加热结构的设计及测量研究[J]. 计量学报, 2023, 44(9): 1347-1351.
YAN Xiao-yan,LIANG Shi-shuo,LIU Yu-qi,GUO Qi. Design and Measurement of Weak Current Heating Structure Based on Magnetron Sputtering. Acta Metrologica Sinica, 2023, 44(9): 1347-1351.
Griffith D J, Ruppeiner G. Introduction to Electrodynamics ［J］. American Journal of Physics, 1981, 49 (12): 1188-1189.
［1］
Simons M T, Gordon J A, Holloway C L, et al. Using frequency detuning to improve the sensitivity of electric field measurements via electromagnetically induced transparency and Autler-Townes splitting in Rydberg atoms ［J］. Applied Physics Letters, 2016, 108 (17): 174101.
［3］
Allred J C, Lyman R N, Kornack T W, et al. High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation ［J］. Physical Review Letters, 2002, 89 (13): 130801.
［6］
Safronova M S, Budker D, DeMille D, et al. Search for new physics with atoms and molecules ［J］. Reviews of Modern Physics,2018, 90 (2): 025008.
［8］
Dang H B, Maloof A C, Romalis M V. Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer ［J］. Applied Physics Letters, 2010, 97 (15): 151110.
［9］
Ledbetter M P, Savukov I M, Acosta V M, et al. Spin-exchange relaxation free magnetometry with Cs vapor ［J］. Physical Review A, 2007, 77 (3): 1012-1015.
［7］
Li Y, Liu X, Cai H W, et al. The optimization of alkali-metal density ratio in hybrid optical pumping atomic magnetometer ［J］. Measurement Science and Technology, 2018, 30: 015005.
［11］
Kominis I K, Kornack T W, Allred J C, et al. A subfemtotesla multichannel atomic magnetometer ［J］. Nature, 2003, 422 (6932): 596-599.
［13］
Igor S, Malcolm B. A High-Sensitivity Tunable Two-Beam Fiber-Coupled High-Density Magnetometer with Laser Heating ［J］. Sensors, 2016, 16 (10): 1691.
［16］
Lu J, Quan W, Ding M, et al. Suppression of Light Shift for High-Density Alkali-Metal Atomic Magnetometer ［J］. IEEE Sensors Journal, 2018, 19(2): 492-496.
［17］
Zhao J, Ding M, Lu J, et al. Determination of Spin Polarization in Spin-Exchange Relaxation-Free Atomic Magnetometer Using Transient Response ［J］. IEEE Transactions on Instrumentation and Measurement, 2019, 69(3): 845-852.
［4］
Boto E, Holmes N, Leggett J, et al. Moving magnetoencephalography towards real-world applications with a wearable system ［J］. Nature, 2018, 555: 657-661.
［5］
Borna A, Carter T R, DeRego P, et al. Magnetic source imaging using a pulsed optically pumped magnetometer Array ［J］. IEEE Transactions on Instrumentation and Measurement,2019, 68, 493-501.
［14］
Sheng D, Perry A R, Krzyzewski S P, et al. A microfabricated optically-pumped magnetic gradiometer ［J］. Applied Physics Letters, 2017, 110 (3): 031106.
［15］
Alem O, Mhaskar R, Jiménez-Martínez R, et al. Magnetic field imaging with microfabricated optically-pumped magnetometers ［J］. Optics Express, 2017, 25 (7): 7849-7858.
［2］
Meyer D H, Kunz P D, Cox K C. Waveguide-Coupled Rydberg Spectrum Analyzer from 0 to 20 GHz ［J］. Physical Review Applied, 2021, 15 (1): 014047.
［12］
Li Z, Wakai R T, Walker T G. Parametric modulation of an atomic magnetometer ［J］. Applied Physics Letters, 2006, 89 (13): 134105.
［10］
Allred J C, Lyman R N, Kornack T W, et al. High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation ［J］. Physical Review Letters, 2002, 89 (13): 130801.
2023, Vol. 44 
