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spontaneous emission |
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spontaneous emission [spän′tan·ē·əs i′mish·ən] (electromagnetism) The emission of radiation from a system in an excited state at a rate that does not depend on the presence of external fields. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Wavelength filters are needed to remove amplified spontaneous emission produced by the diode laser. Spontaneous emission of photons by atoms is such a fundamental, ubiquitous phenomenon that it's easy to forget that an excited atom will emit a photon only if the surrounding vacuum (the space between atoms) can receive it. Only three monkeys, all macques, displayed multiple spontaneous emissions. |
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