  In this work we report a quantum interference mediated control of the
resonance profiles in a generic three-level system and investigate its effect
on key quantum interference (QI) phenomena. Namely in a three level
configuration with doublets in the ground or excited states, we show control
over enhancement and suppression of the emission (absorption) profiles. This is
achieved by manipulation of the strength of QI and the energy spacing of the
doublets. We analyze the application of such QI induced control of the
resonance profile in the framework of two limiting cases of lasing without
inversion and photo-detection.
