Recent content by dbabic

Correction: the fraction of SPONTANEOUS emission coincides exactly with Wien's distribution.

Einstein's derivation assumes that all the generated EM radiation (spontaneous + stimulated) must be balanced by what's absorbed: $$A_{21} N_2 + B_{21} N_2 \rho _{EM} (\omega ) = B_{12} N_1 \rho _{EM} (\omega )$$ where the first term is spontaneous (SPE) and the second stimulated emission...

Hello, Einstein introduced stimulated emission (along with spontaneous emission and absorption) to derive Planck's radiation law using his A and B coefficients in his 1917 paper. My question is, is it possible to separate the Planck radiation spectrum into a fraction that is spontaneous...