L06-page10 - Polarized light passing through vapor bumps...

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10 Alkali Vapor Magnetometer • Basic Physics: • Uses precession frequency of alkali vapor • Quantum mechanics • Magnetometer construction: • Bottle filled with cesium or rubidium vapor • Polarized light source of same element • Coil to generate radio frequency magnetic field • Light detector Alkali Vapor Magnetometer • How it works:
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Unformatted text preview: Polarized light passing through vapor bumps electrons to higher energy shells. AC current flowing in coil through it knocks some electrons down to lower energy states. Light absorbed when electron is re-pumped results in flickering light at Larmor frequency. Measurement of frequency via light sensor....
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This note was uploaded on 01/07/2012 for the course PHYSICS 384 taught by Professor Wei during the Spring '09 term at SUNY Stony Brook.

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