The Effect of Phase Fluctuation on Electromagnetically Induced Transparency, Inversionless Lasing and Refractive Index Enhancement in a Λ System
Shangqing Gong, Zhizhan Xu, Shao-hua Pan
The steady-state behaviour for a Λ-type, three-level atomic system has been analysed by taking into account the effect of the phase fluctuation. It is shown that, for a monochromatic driving field, even if the probe field is in resonance with the corresponding atomic transition, a large refraction index can still be generated; for a finite linewidth of the driving field, inversionless lasing and index enhancement tends to disappear. Furthermore, the linewidth prevents the transparency of the medium.
Journal of Modern Optics•Jul 1, 1995•5 citations