PMID- 37859136
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20231020
IS  - 1094-4087 (Electronic)
IS  - 1094-4087 (Linking)
VI  - 31
IP  - 20
DP  - 2023 Sep 25
TI  - Free-induction-decay magnetic field imaging with a microfabricated Cs vapor cell.
PG  - 33582-33595
LID - 10.1364/OE.500278 [doi]
AB  - Magnetic field imaging is a valuable resource for signal source localization and 
      characterization. This work reports an optically pumped magnetometer (OPM) based 
      on the free-induction-decay (FID) protocol, that implements microfabricated 
      cesium (Cs) vapor cell technology to visualize the magnetic field distributions 
      resulting from various magnetic sources placed close to the cell. The slow 
      diffusion of Cs atoms in the presence of a nitrogen (N(2)) buffer gas enables 
      spatially independent measurements to be made within the same vapor cell by 
      translating a 175 mum diameter probe beam over the sensing area. For example, the 
      OPM was used to record temporal and spatial information to reconstruct magnetic 
      field distributions in one and two dimensions. The optimal magnetometer 
      sensitivity was estimated to be 0.43 pT/H z within a Nyquist limited bandwidth of 
      500 Hz. Furthermore, the sensor's dynamic range exceeds the Earth's field of 
      approximately 50 muT, which provides a framework for magnetic field imaging in 
      unshielded environments.
FAU - Hunter, Dominic
AU  - Hunter D
FAU - Perrella, Chris
AU  - Perrella C
FAU - McWilliam, Allan
AU  - McWilliam A
FAU - McGilligan, James P
AU  - McGilligan JP
FAU - Mrozowski, Marcin
AU  - Mrozowski M
FAU - Ingleby, Stuart J
AU  - Ingleby SJ
FAU - Griffin, Paul F
AU  - Griffin PF
FAU - Burt, David
AU  - Burt D
FAU - Luiten, Andre N
AU  - Luiten AN
FAU - Riis, Erling
AU  - Riis E
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Express
JT  - Optics express
JID - 101137103
SB  - IM
EDAT- 2023/10/20 06:42
MHDA- 2023/10/20 06:43
CRDT- 2023/10/20 01:05
PHST- 2023/10/20 06:43 [medline]
PHST- 2023/10/20 06:42 [pubmed]
PHST- 2023/10/20 01:05 [entrez]
AID - 539666 [pii]
AID - 10.1364/OE.500278 [doi]
PST - ppublish
SO  - Opt Express. 2023 Sep 25;31(20):33582-33595. doi: 10.1364/OE.500278.