arXiv:1710.03072 · Physical Review A

Photoassociation spectroscopy of ultracold Yb173 atoms near the intercombination line

Jeong Ho Han, Jin Hyoun Kang, Moosong Lee, Yong-il Shin

Published Jan 4, 2018• 8 citations

Abstract

We report on photoassociation (PA) spectroscopy of a degenerate Fermi gas of $^{173}\mathrm{Yb}$ atoms near the dissociation limit of the spin-forbidden $^{1}S_{0}$--$^{3}P_{1}$ intercombination transition. An atom-loss spectrum is measured from a trapped sample for a spectral range down to $\ensuremath{-}1$ GHz with respect to the $f=5/2\ensuremath{\rightarrow}{f}^{\ensuremath{'}}=7/2$ atomic resonance. The spectrum shows 80 PA resonances, revealing the high nuclear spin nature of the system. To obtain additional information on the excited molecular states, we investigate the Zeeman effect on the spectrum near a detuning of $\ensuremath{-}0.8$ GHz and examine the quantum numbers of the Zeeman levels using various two-component spin mixture samples. Finally, we measure the atom-loss rate under PA light for several pronounced PA resonances.

DOI: 10.1103/physreva.97.013401

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Photoassociation spectroscopy of lattice-trapped Yb171 atoms near the S01−P13 (f=1/2) intercombination line

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High-Resolution Photoassociation Spectroscopy of Ultracold Ytterbium Atoms by Using the Intercombination Transition

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Observation of Photoassociation Spectra of Ultracold 174 Yb Atoms at 1 S 0 — 3 P 1 Inter-Combination Line

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Photoassociation spectroscopy of weakly bound Rb287 molecules near the 5P1/2+5S1/2 threshold by optical Bragg scattering in Bose-Einstein condensates

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Physical Review ANov 30, 20203 citations

Measurements of optical Feshbach resonances of Yb174 atoms

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arXiv:1710.03072 · Physical Review A

Photoassociation spectroscopy of ultracold Yb173 atoms near the intercombination line

Jeong Ho Han, Jin Hyoun Kang, Moosong Lee, Yong-il Shin

Published Jan 4, 2018• 8 citations

arXiv HTML PDF

Abstract

We report on photoassociation (PA) spectroscopy of a degenerate Fermi gas of

^{173}\mathrm{Yb}

atoms near the dissociation limit of the spin-forbidden

^{1}S_{0}

^{3}P_{1}

intercombination transition. An atom-loss spectrum is measured from a trapped sample for a spectral range down to

\ensuremath{-}1

GHz with respect to the

f=5/2\ensuremath{\rightarrow}{f}^{\ensuremath{'}}=7/2

atomic resonance. The spectrum shows 80 PA resonances, revealing the high nuclear spin nature of the system. To obtain additional information on the excited molecular states, we investigate the Zeeman effect on the spectrum near a detuning of

\ensuremath{-}0.8

GHz and examine the quantum numbers of the Zeeman levels using various two-component spin mixture samples. Finally, we measure the atom-loss rate under PA light for several pronounced PA resonances.

DOI: 10.1103/physreva.97.013401

Related papers

Photoassociation spectroscopy of lattice-trapped Yb171 atoms near the S01−P13 (f=1/2) intercombination line

Changyue Sun, Di Ai, Taoyun Jin +4 more

We report on the photoassociation (PA) spectroscopy of cold $^{171}\mathrm{Yb}$ atoms in a one-dimensional optical lattice. The PA spectral lines correlating to the $^{1}S_{0}+^{3}P_{1}$ $(f=1/2)$ state are observed experimentally. High accuracy and narrow atom-loss spectra are measured ranging up to about 1.2 GHz red detuning with respect to the atomic resonance. The main systematic frequency shifts of the PA transitions are determined with total uncertainties less than 100 kHz, which is more accurate than previous similar experimental results. We determine the initial scattering state of the PA spectra by comparing the spectra with polarized and unpolarized atomic samples. By comparatively analyzing theoretical results calculated based on an adiabatic molecular potential with experimental data, the excited molecular potentials corresponding to the spectral lines are clarified. The precision measurement of the narrow PA spectra plays an important role in exploring atomic interactions and lays the groundwork for the study of cold ytterbium molecules.We report on the photoassociation (PA) spectroscopy of cold $^{171}\mathrm{Yb}$ atoms in a one-dimensional optical lattice. The PA spectral lines correlating to the $^{1}S_{0}+^{3}P_{1}$ $(f=1/2)$ state are observed experimentally. High accuracy and narrow atom-loss spectra are measured ranging up to about 1.2 GHz red detuning with respect to the atomic resonance. The main systematic frequency shifts of the PA transitions are determined with total uncertainties less than 100 kHz, which is more accurate than previous similar experimental results. We determine the initial scattering state of the PA spectra by comparing the spectra with polarized and unpolarized atomic samples. By comparatively analyzing theoretical results calculated based on an adiabatic molecular potential with experimental data, the excited molecular potentials corresponding to the spectral lines are clarified. The precision measurement of the narrow PA spectra plays an important role in exploring atomic interactions and lays the groundwork for the study of cold ytterbium molecules.

Physical Review AFeb 22, 20240 citations

High-Resolution Photoassociation Spectroscopy of Ultracold Ytterbium Atoms by Using the Intercombination Transition

賢東條, Masaaki Kitagawa, Katsunari Enomoto +4 more

We observed high-resolution photoassociation spectra of laser-cooled ytterbium (Yb) atoms in the spin-forbidden 1S0 - 3P1 intercombination line. The rovibrational levels in the 0u+ state were measured for red detunings of the photoassociation laser ranging from 2.9 MHz to 1.97 GHz with respect to the atomic resonance. The rotational splitting of the vibrational levels near the dissociation limit were fully resolved due to the sub-MHz linewidth of the spectra in contrast to previous measurements using the spin-allowed singlet transition. In addition, from a comparison between the spectra of 174Yb and those of 176Yb, a d-wave shape resonance for 174Yb is strongly suggested.We observed high-resolution photoassociation spectra of laser-cooled ytterbium (Yb) atoms in the spin-forbidden 1S0 - 3P1 intercombination line. The rovibrational levels in the 0u+ state were measured for red detunings of the photoassociation laser ranging from 2.9 MHz to 1.97 GHz with respect to the atomic resonance. The rotational splitting of the vibrational levels near the dissociation limit were fully resolved due to the sub-MHz linewidth of the spectra in contrast to previous measurements using the spin-allowed singlet transition. In addition, from a comparison between the spectra of 174Yb and those of 176Yb, a d-wave shape resonance for 174Yb is strongly suggested.

Physical Review LettersApr 21, 200665 citations

Intercombination-line photoassociation spectroscopy of Rb87Yb170

Tobias Franzen, Bastian Pollklesener, Christian Sillus +1 more

We report on the observation of photoassociation (PA) near the $\text{[Rb]}\phantom{\rule{0.16em}{0ex}}5s\phantom{\rule{0.16em}{0ex}}^{2}S_{\frac{1}{2}}+\text{[Yb]}\phantom{\rule{0.16em}{0ex}}6s\phantom{\rule{0.16em}{0ex}}6p\phantom{\rule{0.16em}{0ex}}^{3}P_{1}$ asymptote in a mixture of $^{87}\mathrm{Rb}$ and $^{170}\mathrm{Yb}$ . In a search spanning binding energies between 0.1 and 11 GHz, a single pair of interspecies PA resonances is detected around 3.1 GHz. These resonances are characterized by extracting PA rates, binding energies, and Zeeman shift coefficients. Using one of these resonances, two-photon photoassociation is performed, improving on previous measurements of the binding energies of the two least bound states in the electronic ground state and demonstrating intercombination-line photoassociation as a powerful spectroscopic tool. We discuss implications for pathways towards RbYb molecules in the absolute ground state.We report on the observation of photoassociation (PA) near the $\text{[Rb]}\phantom{\rule{0.16em}{0ex}}5s\phantom{\rule{0.16em}{0ex}}^{2}S_{\frac{1}{2}}+\text{[Yb]}\phantom{\rule{0.16em}{0ex}}6s\phantom{\rule{0.16em}{0ex}}6p\phantom{\rule{0.16em}{0ex}}^{3}P_{1}$ asymptote in a mixture of $^{87}\mathrm{Rb}$ and $^{170}\mathrm{Yb}$. In a search spanning binding energies between 0.1 and 11 GHz, a single pair of interspecies PA resonances is detected around 3.1 GHz. These resonances are characterized by extracting PA rates, binding energies, and Zeeman shift coefficients. Using one of these resonances, two-photon photoassociation is performed, improving on previous measurements of the binding energies of the two least bound states in the electronic ground state and demonstrating intercombination-line photoassociation as a powerful spectroscopic tool. We discuss implications for pathways towards RbYb molecules in the absolute ground state.

arXiv:2212.00913Physical Review AFeb 23, 20235 citations

Observation of Photoassociation Spectra of Ultracold 174 Yb Atoms at 1 S 0 — 3 P 1 Inter-Combination Line

Yun Long, Zhuan-Xian Xiong, Xi Zhang +3 more

Photoassociation (PA) of cold atoms is a key tool widely used for accurate determination of long-range molecular potentials, measurement and tuning of interatomic interactions, as well as creation of desired cold molecules. We report the observation of PA spectra of ultracold ytterbium (Yb) atoms at the 1 S 0 — 3 P 1 inter-combination line by detecting the resonant loss of atoms trapped in a crossed far-off-resonance trap (crossed-FORT). Eight vibrational levels in the 1 0 + u molecular state are observed for PA laser detunings up to 1 GHz with respect to the atomic resonance. The photoassociation resonances have a Lorentzian shape and sub-MHz linewidths due to the ultra low temperature of the atoms, and the resonance positions agree well with that predicted by the semiclassical formula.Photoassociation (PA) of cold atoms is a key tool widely used for accurate determination of long-range molecular potentials, measurement and tuning of interatomic interactions, as well as creation of desired cold molecules. We report the observation of PA spectra of ultracold ytterbium (Yb) atoms at the 1 S 0 — 3 P 1 inter-combination line by detecting the resonant loss of atoms trapped in a crossed far-off-resonance trap (crossed-FORT). Eight vibrational levels in the 1 0 + u molecular state are observed for PA laser detunings up to 1 GHz with respect to the atomic resonance. The photoassociation resonances have a Lorentzian shape and sub-MHz linewidths due to the ultra low temperature of the atoms, and the resonance positions agree well with that predicted by the semiclassical formula.

Chinese Physics LettersJul 1, 20134 citations

Photoassociation spectroscopy of weakly bound Rb287 molecules near the 5P1/2+5S1/2 threshold by optical Bragg scattering in Bose-Einstein condensates

Khan Sadiq Nawaz, Liangchao Chen, Chengdong Mi +4 more

We report the high-resolution photoassociation (PA) spectroscopy of a $^{87}\mathrm{Rb}$ Bose-Einstein condensate (BEC) to excited molecular states near the dissociation limit of $5{P}_{1/2}+5{S}_{1/2}$ by optical Bragg scattering. Since the detection of optical Bragg scattering in the BEC has a high signal-noise ratio, we obtain the high-resolution PA spectrum of excited molecular states in the range of $\ifmmode\pm\else\textpm\fi{}1$ GHz near the dissociation limit of $5{P}_{1/2}+5{S}_{1/2}$ . We compare the results with the conventional method of trap loss and show that the results agree with each other very well. Many interesting phenomena of excited molecular states are observed, such as light-induced frequency shift and anomalous strong bound molecular lines at the atomic transition from $|F=1\ensuremath{\rangle}$ to $|{F}^{\ensuremath{'}}=2\ensuremath{\rangle}$. The observed excited molecular states in the range of $\ifmmode\pm\else\textpm\fi{}1$ GHz near the dissociation limit of $5{P}_{1/2}+5{S}_{1/2}$ should help to further improve long-range bound-state models near the dissociation limit.We report the high-resolution photoassociation (PA) spectroscopy of a $^{87}\mathrm{Rb}$ Bose-Einstein condensate (BEC) to excited molecular states near the dissociation limit of $5{P}_{1/2}+5{S}_{1/2}$ by optical Bragg scattering. Since the detection of optical Bragg scattering in the BEC has a high signal-noise ratio, we obtain the high-resolution PA spectrum of excited molecular states in the range of $\ifmmode\pm\else\textpm\fi{}1$ GHz near the dissociation limit of $5{P}_{1/2}+5{S}_{1/2}$. We compare the results with the conventional method of trap loss and show that the results agree with each other very well. Many interesting phenomena of excited molecular states are observed, such as light-induced frequency shift and anomalous strong bound molecular lines at the atomic transition from $|F=1\ensuremath{\rangle}$ to $|{F}^{\ensuremath{'}}=2\ensuremath{\rangle}$. The observed excited molecular states in the range of $\ifmmode\pm\else\textpm\fi{}1$ GHz near the dissociation limit of $5{P}_{1/2}+5{S}_{1/2}$ should help to further improve long-range bound-state models near the dissociation limit.

Physical Review ANov 30, 20203 citations

Measurements of optical Feshbach resonances of Yb174 atoms

Min‐Seok Kim, Jeongwon Lee, Jae Hoon Lee +2 more

We present measurements of the optical Feshbach resonances (OFRs) of $^{174}\mathrm{Yb}$ atoms for the intercombination transition. We measure the photoassociation (PA) spectra of a pure $^{174}\mathrm{Yb}$ Bose-Einstein condensate (BEC) and determine the dependence of OFRs on PA laser intensities and frequencies for four least-bound vibrational levels near the intercombination transition. We confirm that our measurements are consistent with the temporal decay of a BEC subjected to a PA beam in the vicinity of the fourth vibrational level from the dissociation limit.We present measurements of the optical Feshbach resonances (OFRs) of $^{174}\mathrm{Yb}$ atoms for the intercombination transition. We measure the photoassociation (PA) spectra of a pure $^{174}\mathrm{Yb}$ Bose-Einstein condensate (BEC) and determine the dependence of OFRs on PA laser intensities and frequencies for four least-bound vibrational levels near the intercombination transition. We confirm that our measurements are consistent with the temporal decay of a BEC subjected to a PA beam in the vicinity of the fourth vibrational level from the dissociation limit.

arXiv:1605.06261Physical Review AOct 10, 201613 citations

We report on photoassociation (PA) spectroscopy of a degenerate Fermi gas of

^{173}\mathrm{Yb}

atoms near the dissociation limit of the spin-forbidden

^{1}S_{0}

^{3}P_{1}

intercombination transition. An atom-loss spectrum is measured from a trapped sample for a spectral range down to

\ensuremath{-}1

GHz with respect to the

f=5/2\ensuremath{\rightarrow}{f}^{\ensuremath{'}}=7/2

\ensuremath{-}0.8

GHz and examine the quantum numbers of the Zeeman levels using various two-component spin mixture samples. Finally, we measure the atom-loss rate under PA light for several pronounced PA resonances.

We report on the photoassociation (PA) spectroscopy of cold

^{171}\mathrm{Yb}

atoms in a one-dimensional optical lattice. The PA spectral lines correlating to the

^{1}S_{0}+^{3}P_{1}

(f=1/2)

state are observed experimentally. High accuracy and narrow atom-loss spectra are measured ranging up to about 1.2 GHz red detuning with respect to the atomic resonance. The main systematic frequency shifts of the PA transitions are determined with total uncertainties less than 100 kHz, which is more accurate than previous similar experimental results. We determine the initial scattering state of the PA spectra by comparing the spectra with polarized and unpolarized atomic samples. By comparatively analyzing theoretical results calculated based on an adiabatic molecular potential with experimental data, the excited molecular potentials corresponding to the spectral lines are clarified. The precision measurement of the narrow PA spectra plays an important role in exploring atomic interactions and lays the groundwork for the study of cold ytterbium molecules.

We report on the observation of photoassociation (PA) near the

\text{[Rb]}\phantom{\rule{0.16em}{0ex}}5s\phantom{\rule{0.16em}{0ex}}^{2}S_{\frac{1}{2}}+\text{[Yb]}\phantom{\rule{0.16em}{0ex}}6s\phantom{\rule{0.16em}{0ex}}6p\phantom{\rule{0.16em}{0ex}}^{3}P_{1}

asymptote in a mixture of

^{87}\mathrm{Rb}

and

^{170}\mathrm{Yb}

. In a search spanning binding energies between 0.1 and 11 GHz, a single pair of interspecies PA resonances is detected around 3.1 GHz. These resonances are characterized by extracting PA rates, binding energies, and Zeeman shift coefficients. Using one of these resonances, two-photon photoassociation is performed, improving on previous measurements of the binding energies of the two least bound states in the electronic ground state and demonstrating intercombination-line photoassociation as a powerful spectroscopic tool. We discuss implications for pathways towards RbYb molecules in the absolute ground state.

We report the high-resolution photoassociation (PA) spectroscopy of a

^{87}\mathrm{Rb}

Bose-Einstein condensate (BEC) to excited molecular states near the dissociation limit of

5{P}_{1/2}+5{S}_{1/2}

by optical Bragg scattering. Since the detection of optical Bragg scattering in the BEC has a high signal-noise ratio, we obtain the high-resolution PA spectrum of excited molecular states in the range of $\ifmmode\pm\else\textpm\fi{}1$ GHz near the dissociation limit of

5{P}_{1/2}+5{S}_{1/2}

. We compare the results with the conventional method of trap loss and show that the results agree with each other very well. Many interesting phenomena of excited molecular states are observed, such as light-induced frequency shift and anomalous strong bound molecular lines at the atomic transition from $|F=1\ensuremath{\rangle}$ to $|{F}^{\ensuremath{'}}=2\ensuremath{\rangle}$. The observed excited molecular states in the range of $\ifmmode\pm\else\textpm\fi{}1$ GHz near the dissociation limit of

5{P}_{1/2}+5{S}_{1/2}

should help to further improve long-range bound-state models near the dissociation limit.

We present measurements of the optical Feshbach resonances (OFRs) of

^{174}\mathrm{Yb}

atoms for the intercombination transition. We measure the photoassociation (PA) spectra of a pure

^{174}\mathrm{Yb}

Bose-Einstein condensate (BEC) and determine the dependence of OFRs on PA laser intensities and frequencies for four least-bound vibrational levels near the intercombination transition. We confirm that our measurements are consistent with the temporal decay of a BEC subjected to a PA beam in the vicinity of the fourth vibrational level from the dissociation limit.