Figure 2 | Scientific Reports

Figure 2

From: Magnetocardiography on an isolated animal heart with a room-temperature optically pumped magnetometer

Figure 2

Experimental setup. (a) Picture of the cesium vapor cell. (b) Schematics of the experimental setup. λ/2: half-wave plate, PBS: polarizing beamsplitter. The magnetic field from the heart affects the cesium atomic spins which in turn rotates the polarization of the probe light by an angle θ. This polarization rotation is detected with a balanced polarimeter (shown inside the dashed-line box). (c) Cesium atom level scheme and laser frequencies.

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