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- Optical_pumping abstract "Optical pumping is a process in which light is used to raise (or "pump") electrons from a lower energy level in an atom or molecule to a higher one. It is commonly used in laser construction, to pump the active laser medium so as to achieve population inversion. The technique was developed by 1966 Nobel Prize winner Alfred Kastler in the early 1950s.Optical pumping is also used to cyclically pump electrons bound within an atom or molecule to a well-defined quantum state. For the simplest case of coherent two-level optical pumping of an atomic species containing a single outer-shell electron, this means that the electron is coherently pumped to a single hyperfine sublevel (labeled ), which is defined by the polarization of the pump laser along with the quantum selection rules. Upon optical pumping, the atom is said to be oriented in a particular sublevel, however due to the cyclic nature of optical pumping the bound electron will actually be undergoing repeated excitation and decay between upper and lower state sublevels. The frequency and polarization of the pump laser determines which sublevel the atom is oriented in.In practice, completely coherent optical pumping may not occur due to power-broadening of the linewidth of a transition and undesirable effects such as hyperfine structure trapping and radiation trapping. Therefore the orientation of the atom depends more generally on the frequency, intensity, polarization, spectral bandwidth of the laser as well as the linewidth and transition probability of the absorbing transition.An optical pumping experiment is commonly found in physics undergraduate laboratories, using rubidium gas isotopes and displaying the ability of radiofrequency (MHz) electromagnetic radiation to effectively pump and unpump these isotopes.".
- Optical_pumping thumbnail Long_arc_lamp.svg?width=300.
- Optical_pumping wikiPageExternalLink laser=lamp.htm.
- Optical_pumping wikiPageExternalLink lamp4462.gif.
- Optical_pumping wikiPageExternalLink lamp5028.gif.
- Optical_pumping wikiPageID "4374425".
- Optical_pumping wikiPageRevisionID "540642034".
- Optical_pumping hasPhotoCollection Optical_pumping.
- Optical_pumping subject Category:Quantum_optics.
- Optical_pumping type BodyPart105220461.
- Optical_pumping type Eye105311054.
- Optical_pumping type Organ105297523.
- Optical_pumping type Part109385911.
- Optical_pumping type PhysicalEntity100001930.
- Optical_pumping type QuantumOptics.
- Optical_pumping type SenseOrgan105299178.
- Optical_pumping type Thing100002452.
- Optical_pumping comment "Optical pumping is a process in which light is used to raise (or "pump") electrons from a lower energy level in an atom or molecule to a higher one. It is commonly used in laser construction, to pump the active laser medium so as to achieve population inversion. The technique was developed by 1966 Nobel Prize winner Alfred Kastler in the early 1950s.Optical pumping is also used to cyclically pump electrons bound within an atom or molecule to a well-defined quantum state.".
- Optical_pumping label "Optical pumping".
- Optical_pumping label "Optisch pompen".
- Optical_pumping label "Optisches Pumpen".
- Optical_pumping label "Pompage optique".
- Optical_pumping label "Pompowanie optyczne".
- Optical_pumping label "مضخة ضوئية".
- Optical_pumping sameAs Optisches_Pumpen.
- Optical_pumping sameAs Pompage_optique.
- Optical_pumping sameAs Optisch_pompen.
- Optical_pumping sameAs Pompowanie_optyczne.
- Optical_pumping sameAs m.0bzwgl.
- Optical_pumping sameAs Q2027473.
- Optical_pumping sameAs Q2027473.
- Optical_pumping sameAs Optical_pumping.
- Optical_pumping wasDerivedFrom Optical_pumping?oldid=540642034.
- Optical_pumping depiction Long_arc_lamp.svg.
- Optical_pumping isPrimaryTopicOf Optical_pumping.
