High-bandwidth high-sensitivity closed-loop SERF atom magnetometer device
An atomic magnetic, high-bandwidth technology, applied in the field of extremely weak magnetic detection, can solve problems such as inability to measure bandwidth, and achieve the effect of improving the linear range of device response and the dynamic range of magnetic field measurement, improving high-frequency detection sensitivity, and weakening shielding requirements.
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[0036] see figure 1, a structural schematic diagram of a high-bandwidth and high-sensitivity closed-loop SERF atomic magnetometer device provided in an embodiment of the present invention, including: a pump laser diode (1), a first plano-convex collimator lens (2), and a first 1 / 2 wave plate (3), the first laser isolator (4), beam expander lens (5), first mirror (6), first polarizer (7), 1 / 4 wave plate (8), detection laser diode (9 ), the second plano-convex collimating lens (10), the second 1 / 2 wave plate (11), the second laser isolator (12), the second mirror (13), the second polarizer (14), the second Three 1 / 2 wave plates (15), polarization beam splitter PBS and mirror combination (16), balance detector (17), alkali metal atom gas cell (18), heating box (19), three-axis Helmholtz Coil (20), magnetic shielding barrel (21), PID controller (22), adder (23), series resistance (24), data acquisition card (25), control computer (26), described alkali metal gas chamber (18) is ...
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