Abstract:
In this paper, we present a theoretical analysis of the burning of a narrow transparency window on
the enhanced absorption spectrum of a probe laser in a triple resonance configuration visualized
as a V-type plus a two-level system. The transparency window is due to coherence effects causing
electromagnetically induced transparency (EIT) in a V-type system (i.e. Autler–Townes splitting
plus quantum interference), for atomic vapor at a finite temperature. Additionally, the EIT window
is enhanced by velocity induced population oscillation effect, velocity selective saturation effect,
optical pumping effect (a source of ground state level population dynamics) and wavelength mismatch of the resonant laser fields forming a V-type configuration.
