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