Second Order Optical Process of A Randomly Modulated Multi-Level Atom

Yoshitaka Tanimura, Hiroshi Takano, Ryogo Kubo

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A stochastic model of a multi-level atom interacting with its environment randomly in its excited states is considered. Assuming a two state-jump model for the random intermediate-state interaction, analytical expressions of emission spectra of three- and four-level atoms in the second order optical process are obtained. In each case, the expression is shown to be separated into three types of terms. Two types of terms correspond to the pure Raman spectrum and the luminescence, respectively, while the other type of term bears a mixed character contributing to broadening of the Raman line when the random modulation is slow and merging into the luminescence when the modulation is fast. This characteristic behavior is discussed with the use of the analytical expressions.

Original languageEnglish
Pages (from-to)4550-4565
Number of pages16
JournalJournal of the Physical Society of Japan
Issue number12
Publication statusPublished - 1986 Dec

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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