US 11,940,509 B2
Optically pumped magnetometer (OPM) system with first and second OPM sensors
William Goodman, Sunnyvale, CA (US)
Assigned to Applied Physics Systems, Inc., Mountain View, CA (US)
Filed by William Goodman, Sunnyvale, CA (US)
Filed on Jul. 18, 2022, as Appl. No. 17/813,167.
Prior Publication US 2024/0019510 A1, Jan. 18, 2024
Int. Cl. G01R 33/26 (2006.01)
CPC G01R 33/26 (2013.01) 17 Claims
OG exemplary drawing
 
1. A magnetometer, comprising:
a magnetically isolated chamber having an opening to receive a sample or a rock;
first and second Optically Pumped Magnetometer (OPM) sensors positioned inside the magnetically isolated chamber and arranged on opposite sides of the sample or rock where a side movement by a sample holder toward one sensor is compensated by side movement away from the second sensor reducing position sensitivity during a magnetic property measurement;
an actuator mounted on a frame, the actuator moving an end portion in and out of the magnetically isolated chamber; and
the sample holder coupled to the end portion.