Huang Shihua, Wang Haiyu. SPECTRAL DIFFUSION IN THE SYSTEMS WITH RANDOM FREQUENCY MODULATION[J]. Chinese Journal of Luminescence, 1998,19(3): 199-201DOI:
By introducing terms describing the random frequency modulation into optical Bloch equation
we have discussed spectral diffusion in such systems after a narrow band excitation. Especially
1) if ω jumps to any other ω′ in the ensemble with equal probability
the time dependent lineshape would be a superposition of an exponentially decayed localized line and an exponentially grown background; 2) if the probability that ω jumps to ω′ depends on |ω′-ω|
the delocalized peak would be broadened with time. We have also discussed spectral diffusion in the system with frequency modulated by numbers of independent random telegraph processes as an example.
关键词
光谱扩散频率随机调制光学Bloch方程
Keywords
spectral diffusionrandom frequency modulationoptical Bloch equation