Optical pumping of Rubidium
نویسنده
چکیده
A Rubidium high-frequency lamp is used as the pumping light source to excite Rubidium atoms in a sample cell. The pumping source light is filtered to transmit the D1 Rb line and polarizers are used to produce circular polarization. The circular polarization pumping mechanism selectively repopulates the sample cell ground state Rb Zeeman hyperfine levels away from thermal equilibrium populations according to whether the pumping light is left or right circularly polarized. The sample cell is then irradiated using RF coils with the frequency of the hyperfine levels, changing the transparency of the sample cell Rb vapor. The change in sample transparency is measured as a function of RF frequency in a Silicon photodiode detector. This technique is used to determine the nuclear spin and magnetic moments of the Rb (I=3/2) and Rb (I=5/2) isotopes.
منابع مشابه
Optical Pumping of Natural Rubidium
In 1950, French physicist Alfred Kastler introduced the concept of modern optical pumping, for which he was awarded the Nobel Prize in 1966. The process of optical pumping involves using photons of a desired wavelength and polarization to change the distribution of a gas of atoms from thermal equilibrium. Today, optical pumping is a critical tool in modern Physics experiments, and is the basis ...
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