1209.1891 (H. Aswath Babu et al.)

Refractive index manipulation using optical bistability    [PDF]

H. Aswath Babu, Harshawardhan Wanare

Refractive index and absorption experienced by a probe field can be effectively manipulated by optical bistability (OB) at an adjacent transition. In the three-level ladder configuration the probe experiences either normal or anomalous dispersion depending on whether the atom is in the upper or lower bistable state. We also obtain time-varying refractive index and absorption with constant input bistable field. The lower branch of OB becomes unstable for low input intensities of the bistable field resulting in nonlinear dynamical self-pulsing. This self-pulsing regime is different from earlier demonstrations wherein the pulsing occurs between the bistable states, here the self-pulsing regime involves single solution removed from the bistable region becoming periodic.

View original: http://arxiv.org/abs/1209.1891