Name
Abstract | ||
|---|---|---|
We describe a high-sensitivity 16-channel magnetic sensor based on a spin-exchange relaxation-free (SERF) atomic magnetometer, the most sensitive cryogen-free magnetic field sensor. It has been developed in order to accelerate magnetic measurements in various fields, such as neuroscience and biomedical research, and improve the current technologies. The multi-channel operation is based on a single large flat pancake rubidium vapor cell, two broad laser beams (one for optical pumping and the other for optical Faraday effect detection), and a 4 by 4 photodiode matrix. In addition, a nearly parallel configuration of laser beams and multi-mode fibers facilitate the multi-channel design and the coupling of lasers, respectively. We experimentally demonstrate sensitivity in each channel of the sensor of a few tens femtotesla at low frequency. Because of its high sensitivity and parallel multi-channel detection, we anticipate that this sensor will be useful for many applications, such as magnetoencephalography (MEG), magnetocardiography (MCG), and magnetic micro-particle imaging. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.1109/SAS.2018.8336715 | 2018 IEEE Sensors Applications Symposium (SAS) |
Keywords | DocType | ISBN |
Multi-channel magnetic sensor,spin-exchange relaxation-free (SERF),parallel magnetic measurement,high-sensitivity | Conference | 978-1-5386-2093-9 |
Citations | PageRank | References |
0 | 0.34 | 1 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Young-jin Kim | 1 | 0 | 1.69 |
| Igor Savukov | 2 | 0 | 0.68 |