Buffer gas-assisted polarization spectroscopy of 6Li

Abstract

We report on the demonstration of Doppler-free polarization spectroscopy of the D2 line of 6Li atoms. Counterintuitively, the presence of an Ar buffer gas, in a certain pressure range, causes a drastic enhancement of the polarization rotation signal. The observed dependence of the signal amplitude on the Ar buffer pressure and the pump laser power is reproduced by calculations based on simple rate equations. We performed stable laser frequency locking using a dispersion signal obtained by polarization spectroscopy for laser cooling of 6Li atoms.

References in corpus (4)

• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Calculation of accurate permanent dipole moments of the lowest ${}^{1,3}{\Sigma }^{+}$ states of heteronuclear alkali dimers using extended basis sets
• Decay of an ultracold fermionic lithium gas near a Feshbach resonance
• Polarization spectroscopy in rubidium and cesium

Cited by in corpus (2)

• All-optical production of ${}^6\text{Li}$ molecular BEC in excited hyperfine levels
• Doppler-free intermodulated fluorescence spectroscopy of ${}^{4}He$ $2^{3}P-3^{1,3}D$ transitions at 588 nm with a one-watt compact laser system