| 1. | The separated population represents a population inversion which can exhibit stimulated emissions.
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| 2. | Initially the laser medium is optical amplification by stimulated emission to begin.
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| 3. | Maser is an acronym for microwave amplification by stimulated emission of radiation.
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| 4. | Thus absorption and stimulated emission are reverse processes proceeding at somewhat different rates.
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| 5. | However, some photons cause stimulated emission in excited-state atoms, releasing another coherent photon.
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| 6. | Stimulated emission can also occur in classical models, without reference to photons or quantum-mechanics.
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| 7. | This photon induces the ion to emit with the same frequency by stimulated emission.
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| 8. | In 1986, the super-resolution optical microscope based on stimulated emission was patented by Okhonin.
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| 9. | These last two decay mechanisms compete with stimulated emission reducing the efficiency of light amplification.
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| 10. | The process that causes the amplification is stimulated emission.
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