Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Communications

A theoretical analysis on coherent double resonant absorptive lineshape in closely spaced transitions for λ−type five level system

Saswata Ghosh, Swapan Mandal

Published Sep 13, 2010• 7 citations
Publisher
DOI
10.1016/j.optcom.2010.08.064

Related papers

Two-photon resonances, ac Stark splittings, and shifts of the resonance peaks in Doppler free absorptive lineshapes of a double-lambda type four level system

Monojit Kora, Swapan Mandal

Chemical Physics Letters•Nov 13, 2019•4 citations

Effects of spontaneous decay on absorptive lineshape in closely spaced transitions of an open four level system

Saswata Ghosh, Swapan Mandal

Indian Journal of Physics•Aug 1, 2010•0 citations

Doppler-free absorptive signal lineshape of a four-level double λ-type system: Rabi splitting and two-photon effects

Saswata Ghosh, Swapan Mandal

Two electromagnetic fields (the stronger called the pump and the weaker called the signal) are allowed to interact with a four-level double λ-type system with two pairs of closely spaced levels. The present four-level system could also be viewed as an example of a double resonant system. Under the Doppler-free condition and using a semiclassical formulation of atom–field interaction, we derive the optical Bloch equations involving the said four-level system coupled to two external fields. These coupled optical Bloch equations are unsolvable in closed analytical form. In order to obtain the absorptive lineshapes, we use the usual perturbation method for getting the approximate analytical solution to the coupled optical Bloch equations for the density matrix elements. Through the off-diagonal complex density matrix elements, the introduction of phase angles between the levels participating in dipole-allowed transitions is automatic. It is shown that these phases are appreciable if the applied electromagnetic field is strong. For on-resonance pump conditions, we obtain the usual Rabi splitting. The effects of two-photon resonances are clearly shown for off-resonance pump conditions.

Journal of Physics B Atomic Molecular and Optical Physics•Jun 24, 2009•4 citations

Sub-natural linewidth resonances in coherently-driven double Λ system

Niharika Singh, Q. V. Lawande, Richard D’Souza +2 more

Pramana•Dec 1, 2010•3 citations

Microwave assisted transparency in an M-system

Nawaz Sarif Mallick, Tarak Nath Dey, Kanhaiya Pandey

Abstract In this work we theoretically study a five-level M-system whose two unpopulated ground states are coupled by a microwave (MW) field. The key feature which makes the M-system more efficient in comparison to a routinely studied closed loop Λ-system is the absence of MW field induced population transfer even at high intensities of the latter. The limitation of closed loop Λ systems due to MW induced population redistribution among the ground states, which reduces the atomic coherences, can be overcome in the M-system. We examine lineshape of probe absorption as a function of its detuning in the presence of both control and MW fields. The MW field facilitates the narrowing of the probe absorption lineshape in M-systems which is in contrast to closed loop Λ-systems. Hence this study opens up a new avenue for atom-based phase-dependent MW magnetometry.

Journal of Physics B Atomic Molecular and Optical Physics•Sep 5, 2017•21 citations

Resonance lineshapes in multi-level atomic systems

J.A. Hermann, S. Swain

Journal of Physics B Atomic and Molecular Physics•Oct 21, 1977•0 citations
Two electromagnetic fields (the stronger called the pump and the weaker called the signal) are allowed to interact with a four-level double λ-type system with two pairs of closely spaced levels. The present four-level system could also be viewed as an example of a double resonant system. Under the Doppler-free condition and using a semiclassical formulation of atom–field interaction, we derive the optical Bloch equations involving the said four-level system coupled to two external fields. These coupled optical Bloch equations are unsolvable in closed analytical form. In order to obtain the absorptive lineshapes, we use the usual perturbation method for getting the approximate analytical solution to the coupled optical Bloch equations for the density matrix elements. Through the off-diagonal complex density matrix elements, the introduction of phase angles between the levels participating in dipole-allowed transitions is automatic. It is shown that these phases are appreciable if the applied electromagnetic field is strong. For on-resonance pump conditions, we obtain the usual Rabi splitting. The effects of two-photon resonances are clearly shown for off-resonance pump conditions.
Abstract In this work we theoretically study a five-level M-system whose two unpopulated ground states are coupled by a microwave (MW) field. The key feature which makes the M-system more efficient in comparison to a routinely studied closed loop Λ-system is the absence of MW field induced population transfer even at high intensities of the latter. The limitation of closed loop Λ systems due to MW induced population redistribution among the ground states, which reduces the atomic coherences, can be overcome in the M-system. We examine lineshape of probe absorption as a function of its detuning in the presence of both control and MW fields. The MW field facilitates the narrowing of the probe absorption lineshape in M-systems which is in contrast to closed loop Λ-systems. Hence this study opens up a new avenue for atom-based phase-dependent MW magnetometry.