We investigate the effect of buffer gases on the coherent population trapping resonance induced by a $\ensuremath{\sigma}$-polarized optical field in ${}^{87}\mathrm{Rb}$ atoms. Our experimental results show that inert gases, which depolarize the excited state of alkali-metal atoms, provide higher contrast than nitrogen that effectively quenches their fluorescence. We also demonstrate that elimination of spontaneous radiation does not significantly decrease the width at moderate temperatures of an atomic medium. Therefore, a mixture of inert gases can be preferable over a mixture with nitrogen for atomic clocks.We investigate the effect of buffer gases on the coherent population trapping resonance induced by a $\ensuremath{\sigma}$-polarized optical field in ${}^{87}\mathrm{Rb}$ atoms. Our experimental results show that inert gases, which depolarize the excited state of alkali-metal atoms, provide higher contrast than nitrogen that effectively quenches their fluorescence. We also demonstrate that elimination of spontaneous radiation does not significantly decrease the width at moderate temperatures of an atomic medium. Therefore, a mixture of inert gases can be preferable over a mixture with nitrogen for atomic clocks.

Physical Review AppliedSep 8, 20236 citations

Collisional Depolarization in the Excited State

W. E. Baylis

Springer eBooksJan 1, 197913 citations

Effect of depolarizing and quenching collisions on contrast of the coherent population trapping resonance

Kirill M. Sabakar, Maria I. Vaskovskaya, Dmitry S. Chuchelov +4 more

We investigate the effect of buffer gases on the coherent population trapping resonance induced by a $σ$ -polarized optical field in $^{87}$ Rb atoms. Our experimental results show that inert gases, which depolarize the excited state of the alkali-metal atoms, provide higher contrast than nitrogen that effectively quenches their fluorescence. We also demonstrate that elimination of the spontaneous radiation does not significantly decrease the width at moderate temperatures of an atomic medium. Therefore, a mixture of inert gases can be preferable over a mixture with nitrogen for atomic clocks.We investigate the effect of buffer gases on the coherent population trapping resonance induced by a $σ$-polarized optical field in $^{87}$Rb atoms. Our experimental results show that inert gases, which depolarize the excited state of the alkali-metal atoms, provide higher contrast than nitrogen that effectively quenches their fluorescence. We also demonstrate that elimination of the spontaneous radiation does not significantly decrease the width at moderate temperatures of an atomic medium. Therefore, a mixture of inert gases can be preferable over a mixture with nitrogen for atomic clocks.

arXiv:2305.00761May 1, 20230 citations

We investigate the effect of buffer gases on the coherent population trapping resonance induced by a $\ensuremath{\sigma}$-polarized optical field in

{}^{87}\mathrm{Rb}

atoms. Our experimental results show that inert gases, which depolarize the excited state of alkali-metal atoms, provide higher contrast than nitrogen that effectively quenches their fluorescence. We also demonstrate that elimination of spontaneous radiation does not significantly decrease the width at moderate temperatures of an atomic medium. Therefore, a mixture of inert gases can be preferable over a mixture with nitrogen for atomic clocks.

We investigate the effect of buffer gases on the coherent population trapping resonance induced by a

σ

-polarized optical field in

^{87}

Rb atoms. Our experimental results show that inert gases, which depolarize the excited state of the alkali-metal atoms, provide higher contrast than nitrogen that effectively quenches their fluorescence. We also demonstrate that elimination of the spontaneous radiation does not significantly decrease the width at moderate temperatures of an atomic medium. Therefore, a mixture of inert gases can be preferable over a mixture with nitrogen for atomic clocks.