29 citations · 80 across the 3 of their papers we have counts for
7 papers · 1 filter
Precise measurements of UV atomic lines: Hyperfine structure and isotope shifts in the 398.8 nm line of Yb
Ayan Banerjee, Umakant D. Rapol, Dipankar Das +2
We demonstrate a technique for frequency measurements of UV transitions with sub-MHz precision. The frequency is measured using a ring-cavity resonator whose length is calibrated a…
Precise measurement of hyperfine structure in the state of Rb
Umakant D. Rapol, Anusha Krishna, Vasant Natarajan
We demonstrate a technique to measure hyperfine structure using a frequency-stabilized diode laser and an acousto-optic modulator locked to the frequency difference between two hyp…
Precise measurement of hyperfine intervals using avoided crossing of dressed states
Umakant D. Rapol, Vasant Natarajan
We demonstrate a technique for precisely measuring hyperfine intervals in alkali atoms. The atoms form a three-level system in the presence of a strong control laser and a weak…
Observation of sub-natural linewidths for cold atoms in a magneto-optic trap
Umakant D. Rapol, Ajay Wasan, Vasant Natarajan
We have studied the absorption of a weak probe beam through cold rubidium atoms in a magneto-optic trap. The absorption spectrum shows two peaks with the smaller peak having linewi…
Sub-natural linewidth in room-temperature Rb vapor using a control laser
Umakant D. Rapol, Ajay Wasan, Vasant Natarajan
We demonstrate two ways of obtaining sub-natural linewidth for probe absorption through room-temperature Rb vapor. Both techniques use a control laser that drives the transition fr…
Loading of a Rb magneto-optic trap from a getter source
Umakant D. Rapol, Ajay Wasan, Vasant Natarajan
We study the properties of a Rb magneto-optic trap loaded from a commercial getter source which provides a large flux of atoms for the trap along with the capability of rapid turn-…