Abstract

Electromagnetically induced transparency (EIT) and related phenomena such as lasing without inversion (LWI) are topics of increasing interest in quantum optics (for a review see, for instance [1]) In EIT, an otherwise absorbing medium is made transparent to a weak coherent field on resonance with a certain atomic transition by applying an intense coherent ''driving" field to an adjacent transition There has been a large number of theoretical papers and EIT was demonstrated experimentally (e g, see [2] and references therein) Up to now, most theoretical papers dealing with EIT in gas media have considered only the case of a traveling (TW) driving field In contrast, we study EIT in Doppler broadened three-level media with standing wave (SW) driving and focus our analysis into the advantages of using a SW driving configuration instead of a TW one when the frequency of the probe field is larger than that of the driving field, i e , the so-called frequency up-conversion regime.

© 2000 IEEE