Evanescent wave magnetometers with ultrathin (∼100 μm) cells

Zhao, K. F.; Wu, Z.
September 2008
Applied Physics Letters;9/8/2008, Vol. 93 Issue 10, p101101
Academic Journal
We studied the performance of an evanescent wave magnetometer with a coated cell of adjustable length. The cell length varies from a few millimeters to less than 100 μm. Two kinds of antirelaxation coatings are used: octadecyltrichlorosilane (OTS) and dichlorooctamethyltetrasiloxane (Surfasil). Sub-kilohertz linewidth can be achieved for a 100 μm thick OTS-coated cell. Magnetometers with coated ultrathin cells have superior performance in inhomogeneous magnetic fields, and can achieve a spatial resolution of better than 25 μm.


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