Proceedings ArticleDOI
Coherent laser spectroscopy of rubidium atoms
S. Mitra,M. M. Hossain,Biswajit Ray,Pradip N. Ghosh,Stefka Cartaleva,Dimitar Slavov +5 more
- Vol. 7747, pp 86-94
TLDR
In this paper, the authors used two or three external cavity diode lasers to study multiple resonance transitions in Λ-and V-type systems as well as on (Λ+V)-type system.Abstract:
Laser spectroscopy experiments are reported on rubidium atoms by using two or three external cavity diode lasers to
study multiple resonance transitions in Λ- and V-type systems as well as on (Λ+V)-type system. Electromagnetically
induced transparency (EIT) peaks having sub-natural line-widths are found on the Doppler broadened transmission
backgrounds with velocity selective enhanced absorption dips. In the presence of a pump laser, probe spectrum shows
enhancement of EIT signal by tuning the control laser frequency when the Λ- and V-type EIT signals are made to
overlap. Theoretical analysis is carried out by solving the optical Bloch equations for five-level atomic model under Λ
configuration. With the numerically simulated spectra, variation of EIT transmission peak with ground state decay rate
and excited state spontaneous decay rate are investigated. Effect of pump Rabi frequency on the transmission peak is
also shown.read more
References
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Journal ArticleDOI
Study of width and height of EIT resonance in a Doppler broadened five-level system with varying probe power
M. M. Hossain,S. Mitra,Shrabana Chakrabarti,Debnath Bhattacharyya,Biswajit Ray,Pradip N. Ghosh +5 more
TL;DR: In this article, the experimental observation of electromagnetically induced transparency (EIT) in a Doppler broadened rubidium vapour at room temperature for different probe intensities at a fixed pump intensity in a five-level Λ-type system formed by the D2 transition of 85Rb.
Journal ArticleDOI
Double EIT and enhanced EIT signal in a combination of Λ- and V-type system of Rb-D2 transition
TL;DR: In this article, the experimental observations of double EIT and enhanced EIT signal in a combination of Λ- and V-type multi-level system of the D2 transition of 85Rb atoms interacting with three laser fields are reported.
Journal ArticleDOI
Buffer-gas-induced narrowing of electromagnetically induced transparent spectra for an open system
Zhijuan Hu,C. G. Du,Yinghe Wang +2 more
TL;DR: In this article, the authors investigated the spectra of the electromagnetically induced transparency (EIT) when a cell is filled with a buffer gas and showed that the buffer gas can induce a narrower spectra line and steeper dispersion than those of the usual EIT case in a homogeneous and Doppler broadened system.