population inversion factor
Technical term used in laser physics and quantum electronics to describe the degree of population inversion.
The population inversion factor is an important parameter for laser oscillation.
反転分布 refers to the state of population inversion itself, while 逆転分布係数 is a numerical factor quantifying that inversion.
Compound of 逆転 (inversion), 分布 (distribution), and 係数 (coefficient/factor). A direct technical translation of 'population inversion factor'.