2026-04-13T06:53:56Zhttps://recercat.cat/oai/requestoai:recercat.cat:2117/3774182025-07-22T14:56:27Zcom_2072_1033col_2072_452951
RECERCAT
author
Martín Romero, Fernando
2022-07-19
We demonstrate an ultra-high sensitivity rf optical magnetometer based
on a compact 5×5×8 mm3 Rubidium-87 vapor cell in a mu-metal shielded environment.
The rf field is detected via a Faraday rotation effect on the linear polarization of a probe
beam, and the resonance frequency is tuned via Zeeman effect by applying a static bias
magnetic field to the cell. Sensitivities down to 3 fT/√Hz are achieved between 10 kHz
and 100 kHz, which is a performance comparable to that of prior larger cells. An
increase in the sensitivity with frequency and temperature has been observed.
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Àrees temàtiques de la UPC::Enginyeria elèctrica::Dispositius magnètics
Magnetometers
atomic magnetometer
optical magnetometer
radio-frequency
sensitivity
compact magnetometer
tunable magnetometer
Magnetòmetres
A compact and tunable atomic magnetometer for femtotesla radio-frequency field detection Magnetometry using hot atomic vapors
Master thesis