100 citations · 863 across the 51 of their papers we have counts for
16 papers · 1 filter
Observation of quantum interference of optical transition pathways in Doppler-free two-photon spectroscopy and implications for precision measurements
Bubai Rahaman, Sid C. Wright, Sourav Dutta
Doppler-free two-photon spectroscopy is a standard technique for precision measurement of transition frequencies of dipole-forbidden transitions. The accuracy of such measurements…
High precision measurement of the hyperfine splitting and ac Stark shift of the state in atomic cesium
Bubai Rahaman, Sourav Dutta
We report the measurement of hyperfine splitting in the state of Cs using high resolution Doppler-free two-photon spectroscopy in a Cs vapor cell. We det…
Measurement of collisions between laser cooled cesium atoms and trapped cesium ions
Sourav Dutta, S. A. Rangwala
We report the measurement of collision rate coefficient for collisions between ultracold Cs atoms and low energy Cs+ ions. The experiments are performed in a hybrid trap consisting…
Cooling of trapped ions by resonant charge exchange
Sourav Dutta, S. A. Rangwala
The two most widely used ion cooling methods are laser cooling and sympathetic cooling by elastic collisions (ECs). Here we demonstrate another method of cooling ions that is based…
All-optical switching in a continuously operated and strongly coupled atom-cavity system
Sourav Dutta, S. A. Rangwala
We experimentally demonstrate collective strong coupling, optical bi-stability (OB) and all-optical switching in a system consisting of ultracold 85Rb atoms, trapped in a dark magn…
Non-destructive detection of ions using atom-cavity collective strong coupling
Sourav Dutta, S. A. Rangwala
We present a technique, based on atoms coupled to an optical cavity, for non-destructive detection of trapped ions. We demonstrate the vacuum-Rabi splitting (VRS), arising due to t…
Photodissociation of trapped Rb : Implications for simultaneous trapping of atoms and molecular ions
S. Jyothi, Tridib Ray, Sourav Dutta +4
The direct photodissociation of trapped Rb (rubidium) molecular ions by the cooling light for the Rb magneto-optical trap (MOT) is studied, both experimentally…
Collisional cooling of light ions by co-trapped heavy atoms
Sourav Dutta, Rahul Sawant, S. A. Rangwala
We experimentally demonstrate cooling of trapped ions by collisions with co-trapped, higher mass neutral atoms. It is shown that the lighter K ions, created by ionizin…
Quantum Defect Theory description of weakly bound levels and Feshbach resonances in LiRb
Jesús Pérez-Ríos, Sourav Dutta, Yong P. Chen +1
The multichannel quantum defect theory (MQDT) in combination with the frame transformation (FT) approach is applied to model the Fano-Feshbach resonances measured for Li$^{87…
Formation of deeply bound ultracold LiRb molecules via photoassociation near the Li 2S + Rb 5P asymptote
John Lorenz, Adeel Altaf, Sourav Dutta +2
We present spectra of ultracold LiRb molecules in their electronic ground state formed by spontaneous decay of weakly bound photoassociated molecules. Beginning with ato…
Formation of ultracold LiRb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
Adeel Altaf, Sourav Dutta, John Lorenz +3
We report the formation of ultracold LiRb molecules in the electronic state by photoassociation (PA) and their detection via resonantly enhanced multiphot…
Formation of ultracold LiRb molecules by photoassociation near the Li (2s 2S1/2) + Rb (5p 2P1/2) asymptote
Sourav Dutta, D. S. Elliott, Yong P. Chen
We report the production of ultracold 7Li85Rb molecules by photoassociation (PA) below the Li (2s 2S1/2) + Rb (5p 2P1/2) asymptote. We perform PA spectroscopy in a dual-species 7Li…
Photoassociation of ultracold LiRb* molecules: observation of high efficiency and unitarity-limited rate saturation
Sourav Dutta, John Lorenz, Adeel Altaf +2
We report the production of ultracold heteronuclear 7Li85Rb molecules in excited electronic states by photoassociation (PA) of ultracold 7Li and 85Rb atoms. PA is performed in a du…
Interspecies collision-induced losses in a dual species 7Li-85Rb magneto-optical trap
Sourav Dutta, Adeel Altaf, John Lorenz +2
In this article, we report the measurement of collision-induced loss rate coefficients β_{Li,Rb} and β_{Rb,Li}, and also discuss means to significantly suppress such collision indu…
Laser spectroscopy of the X 1Σ+ and B 1Π states of the LiRb molecule
Sourav Dutta, Adeel Altaf, D. S. Elliott +1
We have studied the X 1Σ+ and B 1Π states of 7Li85Rb using Laser Induced Fluorescence (LIF) spectroscopy and Fluorescence Excitation Spectroscopy (FES). We extract molecular consta…
Mode-hop-free tuning over 135 GHz of external cavity diode lasers without anti-reflection coating
Sourav Dutta, D. S. Elliott, Yong P. Chen
We report an external cavity diode laser (ECDL), using a diode whose front facet is not antireflection (AR) coated, that has a mode-hop-free (MHF) tuning range greater than 135 GHz…