GK
TECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Blackbody radiation
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Stimulated emission
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Planck’s radiation
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Einstein oscillation
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Detailed explanation-1: -Answer. light amplification by stimulated emission of radiation (laser).
Detailed explanation-2: -A laser (Light Amplification by Stimulated Emission of Radiation) is a powerful source of coherent light (i.e. monochromatic and all in phase).
Detailed explanation-3: -Raman amplifier. The Raman amplifier makes use of stimulated Raman scattering (SRS) within the fiber, which transfers the energy of higher-frequency pump signals to lower-frequency signals. The amplification occurs along the transmission fiber for the distributed Raman amplifier.
Detailed explanation-4: -The mechanism by which stimulated emission can be made to dominate is to have more atoms in the excited state than in the lower energy state, so that emitted photons are more likely to stimulate emission than to be absorbed.