The high-frequency recoil component is suppressed in the optical Ramsey resonance by utilizing optical pumping from the ground state to one of the magnetic sublevels of the upper state. This method requires no extra laser for suppression. With a moderate pump power and an exact tuning of the magnetic field, the high-frequency recoil component of the Ca intercombination line $^{1}$ ${\mathit{S}}_{0\mathrm{\ensuremath{-}}}^{3}$ ${\mathit{P}}_{1}$ was suppressed completely.The high-frequency recoil component is suppressed in the optical Ramsey resonance by utilizing optical pumping from the ground state to one of the magnetic sublevels of the upper state. This method requires no extra laser for suppression. With a moderate pump power and an exact tuning of the magnetic field, the high-frequency recoil component of the Ca intercombination line $^{1}$${\mathit{S}}_{0\mathrm{\ensuremath{-}}}^{3}$${\mathit{P}}_{1}$ was suppressed completely.

Physical Review AApr 1, 199213 citations

THE PHOTON RECOIL EFFECT IN THE LINEAR OPTICAL RAMSEY RESONANCE

G. KRAMER

Symposium on Frequency Standards and MetrologyMay 1, 20021 citation

Recoil-induced Resonances as All-optical Switches

Frank A. Narducci, S. A. DeSavage, K. Gordon +3 more

APSMar 1, 20100 citations

Observation of photon recoil effects in single-beam absorption spectroscopy with an ultracold strontium gas

Fachao Hu, Canzhu Tan, Yuhai Jiang +2 more

We report on observing photon recoil effects in the absorption of a single monochromatic light at 689 nm through an ultracold 88Sr gas, where the recoil frequency is comparable to natural linewidth of the narrow-line transition 5s2 1S0–5s5p 3P1 in strontium. In the regime of high-saturation, the absorption profile becomes asymmetric due to the photon-recoil shift, which is of the same order as the natural linewidth. The lineshape is described by an extension of the optical Bloch equations including the momentum transfers to atoms during emission and absorption of photons. Our work reveals the photon recoil effects in a simplest single-beam absorption setting, which is of significant relevance to other applications such as saturation spectroscopy, Ramsey interferometry, and absorption imaging.We report on observing photon recoil effects in the absorption of a single monochromatic light at 689 nm through an ultracold 88Sr gas, where the recoil frequency is comparable to natural linewidth of the narrow-line transition 5s2 1S0–5s5p 3P1 in strontium. In the regime of high-saturation, the absorption profile becomes asymmetric due to the photon-recoil shift, which is of the same order as the natural linewidth. The lineshape is described by an extension of the optical Bloch equations including the momentum transfers to atoms during emission and absorption of photons. Our work reveals the photon recoil effects in a simplest single-beam absorption setting, which is of significant relevance to other applications such as saturation spectroscopy, Ramsey interferometry, and absorption imaging.

arXiv:2101.11176Chinese Physics BSep 8, 20214 citations

Suppression of a Recoil Component in Nonlinear Doppler-Free Spectroscopy

F. Riehle, Jun Ishikawa, J. Helmcke

A new method to suppress one of the two recoil components in saturation and Ramsey spectroscopy is presented. It is applied to the calcium intercombination line $^{1}S_{0}\ensuremath{-}^{3}P_{1}$ ($\ensuremath{\lambda}\ensuremath{\cong}675$ nm) by optical pumping of the calcium atoms from the metastable $^{3}P_{1}$ state through the $^{3}S_{1}$ state into the $^{3}P_{0}$ or the $^{3}P_{2}$ states. The suppression of the low-frequency recoil component could be deduced in saturated absorption from a narrowing and shift of the Lamb dip as well as observed directly in Ramsey fringe spectroscopy when the recoil doublet was resovled.A new method to suppress one of the two recoil components in saturation and Ramsey spectroscopy is presented. It is applied to the calcium intercombination line $^{1}S_{0}\ensuremath{-}^{3}P_{1}$ ($\ensuremath{\lambda}\ensuremath{\cong}675$ nm) by optical pumping of the calcium atoms from the metastable $^{3}P_{1}$ state through the $^{3}S_{1}$ state into the $^{3}P_{0}$ or the $^{3}P_{2}$ states. The suppression of the low-frequency recoil component could be deduced in saturated absorption from a narrowing and shift of the Lamb dip as well as observed directly in Ramsey fringe spectroscopy when the recoil doublet was resovled.

Physical Review LettersOct 31, 198842 citations

^{1}

${\mathit{S}}_{0\mathrm{\ensuremath{-}}}^{3}$

{\mathit{P}}_{1}

was suppressed completely.

^{3}P_{1}

state through the

^{3}S_{1}

state into the

^{3}P_{0}

or the

^{3}P_{2}

states. The suppression of the low-frequency recoil component could be deduced in saturated absorption from a narrowing and shift of the Lamb dip as well as observed directly in Ramsey fringe spectroscopy when the recoil doublet was resovled.