Double-beam two-photon optical bistability in a Fabry-Perot cavity with polar molecules

Optical bistability in a micrometre-sized Fabry-Perot cavity, filled with appropriate polar molecules, is analysed after two incident beams (with frequenciesgw₁ andgw₂) produce in the system a two-photon resonance at frequencygw₁ +gw₂. One-photon resonances at the frequenciesgw₁ andgw₂ are discarded. It was not necessary to assume a particular relationship betweengw₁ andgw₂, and the single-beam two-photon optical bistability whengw₁ andgw₂ are of the same order or equal is emphasized.