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Bookmark or Share- How did Einstein know that it was necessary to include "stimulated ...Spontaneous emission sets the scale for all radiative interactions, such as absorption and stimulated emission. Atoms will only absorb photons of the correct wavelength: the photon disappears and the atom goes to a higher energy state, setting the stage for spontaneous emission.
- Why is the photon emitted in the same direction as incoming radiation ...The word "stimulated" means that the emission of the photon is "encouraged" by the existence of photons in the same state as the state where the new photon may be added. The "same state" is one that has the same frequency, the same polarization, and the same direction of motion.
- How does stimulated emission occur in 3 level lasers?0. My understanding is that in 3-level lasers, we pump up a collection of atoms from the ground state of energy E1 E 1 to some excited state E3 E 3 with the help of monochromatic radiation of Energy E3 −E1 E 3 − E 1. Then the atoms in the excited state make a fast and preferably non-radiative transition to a metastable state E2 E 2, after ...
- Why does stimulated emission happen? - Physics Stack ExchangeSame for stimulated emission. An incoming photon "shakes" an excited atom, which then emits duplicated photon, which in turn shakes other atom, and process repeats further inducing stimulated emission avalanche, until all excited atoms go back to ground state. But then they are excited again by an external light source or by other means, and ...
- How does stimulated emission work, exactly? - Physics Stack Exchange7. I am currently in my first year of college, and I'm having a hard time understanding how stimulated emission works. I was told by my professor that an excited electron jumps back to the ground state upon interaction with a photon, in other words, the photon stimulated the electron's de-excitation. Wikipedia gives the same thing.
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