TY - JOUR
T1 - A bell-bloom atomic magnetic-videorecorder with global shutter and differential readout
AU - He, Xinxin
AU - Dong, Haifeng
AU - Hua, Zeyu
AU - Ye, Hangfei
AU - Xu, Chenlu
AU - Li, Xin
AU - Guo, Hao
AU - Li, Zhonghao
AU - Wen, Huanfei
AU - Tang, Jun
AU - Ma, Zongmin
AU - Liu, Jun
N1 - Publisher Copyright:
© The Author(s) 2026.
PY - 2026/12
Y1 - 2026/12
N2 - Weak magnetic video recording with warm atomic ensembles constitutes a non-cryogenic and non-contact methodology for the magnetic source identification and failure reproduction. However, the spatial resolution, imaging speed, and shooting mode from traditional optical-pumping systems have constrained the real recording for ever-changing magnetic phenomena. This work reports a 684-pixel Bell-Bloom atomic magnetic-videorecorder with the global shutter and two-dimensional differential readout, for the real recording of changing gradient fields, which implements the free Larmor precession of Cs atoms to infer local magnetic information, employs a high-speed dual-quadrant Complementary Metal Oxide Semiconductor (CMOS) sensor with the global shutter and the extra microlens focusing to simultaneously detect differential optical rotations on all pixels. Also, a digital micro-mirror device (DMD) is employed to weigh the pixel crosstalk and the spatial resolution, and to facilitate the one-to-one pairing of the profiles for each differential probe beam pair projected onto the two CMOS quadrants. Furthermore, the average sensitivity is demonstrated to be 194 pT/ Hz @0.5−178 Hz, with a high spatial resolution of 137 μm2 and a frame rate of 205 fps in a field of view up to 5 × 2.6 mm2. Finally, the magnetic distributions from a moving source have been experimentally measured and found to be in good agreement with the simulation results. (Figure presented.)
AB - Weak magnetic video recording with warm atomic ensembles constitutes a non-cryogenic and non-contact methodology for the magnetic source identification and failure reproduction. However, the spatial resolution, imaging speed, and shooting mode from traditional optical-pumping systems have constrained the real recording for ever-changing magnetic phenomena. This work reports a 684-pixel Bell-Bloom atomic magnetic-videorecorder with the global shutter and two-dimensional differential readout, for the real recording of changing gradient fields, which implements the free Larmor precession of Cs atoms to infer local magnetic information, employs a high-speed dual-quadrant Complementary Metal Oxide Semiconductor (CMOS) sensor with the global shutter and the extra microlens focusing to simultaneously detect differential optical rotations on all pixels. Also, a digital micro-mirror device (DMD) is employed to weigh the pixel crosstalk and the spatial resolution, and to facilitate the one-to-one pairing of the profiles for each differential probe beam pair projected onto the two CMOS quadrants. Furthermore, the average sensitivity is demonstrated to be 194 pT/ Hz @0.5−178 Hz, with a high spatial resolution of 137 μm2 and a frame rate of 205 fps in a field of view up to 5 × 2.6 mm2. Finally, the magnetic distributions from a moving source have been experimentally measured and found to be in good agreement with the simulation results. (Figure presented.)
UR - https://www.scopus.com/pages/publications/105037136305
U2 - 10.1038/s41378-026-01282-5
DO - 10.1038/s41378-026-01282-5
M3 - 文章
AN - SCOPUS:105037136305
SN - 2055-7434
VL - 12
JO - Microsystems and Nanoengineering
JF - Microsystems and Nanoengineering
IS - 1
M1 - 147
ER -