Abstract
In this work we investigate propagation of two laser pulses in the optically dense atomic medium (three-level Λ -system) in the case of a closed excitation contour. The closed excitation contour is created by additional microwave radiation which interacts with the low-frequency transition of the Λ -system. Two cases are considered: when the pulse duration is more and less then lifetime of the excited atomic level. It is shown that the propagation of the pulses depends on the relative phase of the fields. When the relative phase is zero, the pulses energy is absorbed linearly. When the relative phase is π / 2, the pulses exchange energy between each other.
Highlights
In this work we investigate propagation of two laser pulses in the optically dense atomic medium in the case of a closed excitation contour
In the last two decades a lot of works has been devoted to the coherent population trapping effect (CPT) [1]
When the CPT-resonance is excited by two-frequency electromagnetic field, the propagation of continuous radiation obeys a linear law [1]
Summary
In this work we investigate propagation of two laser pulses in the optically dense atomic medium (three-level / -system) in the case of a closed excitation contour. In the last two decades a lot of works has been devoted to the coherent population trapping effect (CPT) [1]. The essence of this effect is the appearance of a specific superposition of long-lived states in a three-level atom ( / -system) which is excited by two-frequency radiation. It leads to disappearance of the absorption in a certain frequency band (area of the CPT-resonance).
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
