High-sensitivity multi-channel atomic magnetometer

Kim, Young Jin; Savukov, Igor Mykhaylovych

High-sensitivity multi-channel atomic magnetometer

Patent · 31 August 2021

OSTI ID:1840395

Kim, Young Jin; Savukov, Igor Mykhaylovych

High-sensitivity multi-channel atomic magnetometers are described. Methods for operating multi-channel atomic magnetometers are also described. Moreover, devices incorporating a plurality of multi-channel atomic magnetometers are described. A multi-channel atomic magnetometer may use the spin-exchange relaxation-free (SERF) technique. A multi-channel atomic magnetometer may achieve multi-channel operation in a single module, reducing the cost of sensors. A multi-channel atomic magnetometer may be a 16-channel atomic magnetometer. A multi-channel atomic magnetometer may include a single large vapor cell including alkali-metal atoms and at least one buffer gas that restricts motion of atomic spins of the alkali-metal atoms, thereby making relatively small internal cell volumes act as a multiple independent local sensing channels. A multi-channel atomic magnetometer may include a broad pump beam that simultaneously polarizes all (or substantially all) of the alkali-metal atoms in each internal sensing volume of the vapor cell, and a broad probe beam that simultaneously measures magnetic fields at multiple sensing volumes with a photodiode array.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

DOE Contract Number:: 89233218CNA000001

Assignee:: Triad National Security, LLC (Los Alamos, NM)

Patent Number(s):: 11,105,865

Application Number:: 16/578,816

OSTI ID:: 1840395

Country of Publication:: United States

Language:: English

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