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A nanosecond-resolved atomic hydrogen magnetometer
Alexandros K Spiliotis1,2, Michalis Xygkis1,2, Konstantinos Tazes1,2
1Foundation for Research and Technology Hellas, Institute of Electronic Structure and Laser, N. Plastira 100, Heraklion, Crete, GR-71110, Greece. ptr@iesl.forth.gr.
Physical Chemistry Chemical Physics : PCCP
|September 22, 2021
Summary
We developed a new atomic magnetometer capable of nanosecond-resolved measurements, offering a significant speed improvement over existing technologies. This advancement enables ultrafast magnetic field monitoring in various scientific disciplines.
Area of Science:
- Atomic physics
- Quantum sensing
- Spectroscopy
Background:
- Conventional magnetometers lack the speed for ultrafast phenomena.
- High-density spin-polarized atoms are sensitive to magnetic fields.
Purpose of the Study:
- To introduce a novel nanosecond-resolved atomic magnetometer.
- To demonstrate ultrafast magnetic field measurements.
Main Methods:
- Utilizing the magnetic field dependence of hyperfine beating in spin-polarized H atoms.
- Producing spin-polarized H atoms via rapid photodissociation of HCl gas with sub-nanosecond laser pulses.
- Measuring magnetic fields using a pick-up coil.
Main Results:
- Demonstrated nanosecond-resolved magnetometry.
- Projected sensitivity of a few nanotesla for a 10 nl volume sensor with 1 ns measurement time.
- Achieved a speed increase of at least three orders of magnitude compared to conventional magnetometers.
Conclusions:
- The developed atomic magnetometer enables ultrafast continuous B-field measurements.
- This technology has potential applications in spin chemistry, spin physics, and plasma physics.
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