37 citations · 63 across the 3 of their papers we have counts for
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physics.atom-ph2020★ 11 cited
Spin selection rule for {\it S} level transitions in atomic rubidium under paraxial and nonparaxial two-photon excitation
Krishnapriya Subramonian Rajasree, Ratnesh Kumar Gupta, Vandna Gokhroo +5
We report on an experimental test of the spin selection rule for two-photon transitions in atoms. In particular, we demonstrate that the transition rate in a…
physics.atom-ph2020
Observation of the Rb to electric quadrupole transition at 516.6 nm mediated via an optical nanofibre
Tridib Ray, Ratnesh K. Gupta, Vandna Gokhroo +4
Light guided by an optical nanofibre can have a very steep evanescent field gradient extending from the fibre surface. This can be exploited to drive electric quadrupole transition…
physics.atom-ph2018★ 15 cited
A simple, narrow, and robust atomic frequency reference at 993 nm exploiting the rubidium (Rb) to transition using one-color two-photon excitation
Thomas Nieddu, Tridib Ray, Krishnapriya S. Rajasree +2
We experimentally demonstrate a one-color two-photon transition from the ground state to the excited state in rubidium (Rb) vapor using a co…