what activity happening inside the atom causes the electron to decay from its excited energy level to a lower energy level?

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제목 : In a stimulated emission, what activity happening inside the atom causes the electron to decay from its excited energy level to a lower energy level?
유도 방출에서 원자 내부에서 어떤 활동이 발생하여 전자가 여기된 에너지 준위에서 더 낮은 에너지 준위로 붕괴하게 됩니까?

Oscillating dipoles emit electromagnetic radiation .
진동 쌍극자는 전자기 복사를 방출합니다.

When a photon interacts with an atom, the electrons starts to oscillate with the frequency of the incoming photon,
광자가 원자와 상호 작용할 때 전자는 들어오는 광자의 주파수로 진동하기 시작하며,

this creates a transition dipole moment that results in a photon emission of the exact same frequency and phase of the incoming photon.
이는 들어오는 광자와 정확히 동일한 주파수 및 위상의 광자 방출을 초래하는 전이 쌍극자 모멘트를 생성합니다.