Question

a two level laser is possible in quantum mechanic how​

Answer 1

Answer:

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Answer 2

The two-level laser is possible in quantum mechanics because the probabilities for raise in an electron to the upper level, induce the decay of electrons to lower level known as population inversion are exactly the same, so optical pumping will at most only achieve an equal population of the two-level system.

Explanation:

• An atom in a lower level for absorbs a photon of frequency and moving back to upper level.
• An incident photon created an upper-level atom to rotting, emitting a "stimulated" photon whose properties are identical to those of the incident photon.
• The laser emits light through optical amplification, electromagnetic radiation. The term "laser" is defining "light  by the emission of radiation .
• A four-level laser is similar to the pumping of a three-level laser. The main advantage of the 4 lasers is the lower laser energy level (E2).

Learn more about two level laser

A two level laser is possibles in quantum mechanics. How?  

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