A variety of coherent non-linear resonances are investigated experimentally in the presence of a standing wave pump field for the D2 transition of both Rb isotopes. Under Λ configuration, the observed enhanced absorption dips along with electromagnetically induced transparency (EIT) peak are described. The effect of the pump frequency detuning on EIT is studied. At exact resonance, the EIT splitting with FWHM of 2.0 and 1.2 MHz is attributed to the spatial modulation of EIT resonance in the standing wave field. In a V configuration, velocity selective resonances (VSR) together with electromagnetically induced absorption (EIA) dip are observed and studied at different pump-probe intensity ratios. © 2011 Elsevier B.V. All rights reserved.

BISWAJIT RAY

Physics

S MITRA

M M HOSSAIN

P PODDAR

C CHAUDHURI

P N GHOSH

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Chemical Physics Letters

Variations of the coherent resonance, i.e. an electromagnetically induced transparency (EIT) peak with the cell temperature in Λ- and V-type systems are observed for the 85Rb-D2 transition. In a Λ-type system, the amplitude of the EIT peak gradually decreases and it is finally masked by the broadened optical pumping dips with the increase of the cell temperature. But for the V-type system, the EIT and the saturation peaks are greatly enhanced with the increase of the cell temperature. The effect of the external magnetic field on the EIT resonance is also investigated considering both types of systems. For the Λ-type system in place of a single EIT resonance, five transparency windows with broadened width and reduced contrast are obtained depending on the Zeeman levels formed by the applied magnetic field. In the V-type system, the coherent resonance peak could not be resolved in the presence of the external magnetic field, but a greater number of saturation peaks with broadened width appear in the probe transmission spectrum. A theoretical model is adopted to represent the experimental results. Good agreement is found between the experimental and numerically simulated results. © 2013 IOP Publishing Ltd.

Journal of Physics B: Atomic, Molecular and Optical Physics

Temperature and magnetic field effects on the coherent and saturating resonances in Î›- And V-type systems for the 85Rb-D2 transition

Standing wave pump field induced coherent non-linear resonances in rubidium vapor

Journal	Data powered by TypesetChemical Physics Letters
Publisher	Data powered by TypesetELSEVIER SCIENCE BV
ISSN	0009-2614