Theory of the two-photon micromaser: Linewidth

A. H. Toor, Shi Yao ZHU, M. S. Zubairy

Research output: Contribution to journalJournal articlepeer-review

21 Citations (Scopus)


In this paper, we study the linewidth of a two-photon micromaser by using an exact Hamiltonian approach. We consider a three-level atomic system interacting with a single-mode radiation field. The intermediate level is considered to be off resonant with the field. In this model, under the large detuning limit, two-photon transitions result. We calculate the linewidth of a two-photon micromaser and present results in the small and large detuning limits. In the small detuning limit, single-photon behavior is evident, whereas in the large detuning limit, true two-photon behavior is exhibited. We compare the results for the linewidth, under a large detuning limit, with the results obtained by using a phenomenological, effective Hamiltonian approach. The absence of the dynamic Stark shift in a phenomenological, effective Hamiltonian leads to qualitatively different results in the two approaches.

Original languageEnglish
Pages (from-to)3529-3535
Number of pages7
JournalPhysical Review A
Issue number5
Publication statusPublished - 1996

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics


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