Stimulated emission
Feb 9 2008 | Views 58 |
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In optis, stimulated emission is the process by which, when perturbed by a photon, matter may lose energyresulting in the creation of another photon. The perturbing photon is not destroyed in the process (cf. absorption), and the second photon is created with the same phase, frequency, polarization, and direction of travel as the original. Stimulated emission is really a quantum mechanicalphenomenon but it can be understood in terms of a "classical" field and a quantum mechanical atom. The process can be thought of as "optical amplification" and it forms the basis of both the laser and maser.
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