深圳大学电子科学与技术学院 Another method of determining g(v, vo) is to apply an electromagnetic field to the sample containing the atoms and then plot the amount of energy absorbed by 1->2 transitions as a function of the frequency This function is again g(v, vo) The fact that both the emission and the absorption are described by the same lineshape function can be verified experimentally, follows from basic quantum mechanical considerations深圳大学电子科学与技术学院 • Another method of determining is to apply an electromagnetic field to the sample containing the atoms and then plot the amount of energy absorbed by 1→2 transitions as a function of the frequency. This function is again . • The fact that both the emission and the absorption are described by the same lineshape function can be verified experimentally, follows from basic quantum mechanical considerations. ( , ) ~ g   0 ( , ) ~ g   0