1.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Basic ScienceKR86 papers
- Seoul National UniversityKR79 papers
- Korea University of Science and TechnologyKR57 papers
- Kyungpook National UniversityKR52 papers
- Sejong UniversityKR51 papers
- Korea UniversityKR48 papers
- Korea Advanced Institute of Science and TechnologyKR37 papers
- Ewha Womans UniversityKR36 papers
- Sungkyunkwan UniversityKR35 papers
- The University of TokyoJP35 papers
- Yale UniversityUS30 papers
- Chung-Ang UniversityKR29 papers
15 papers · 1 filter
Strontium transition frequency measurements assisted by a photonic grating chip
Jaewhan Lee, Hyun Gyung Lee, Won-Kyu Lee +15
We measure the absolute frequency of the transition in strontium using two methods: fluorescence spectroscopy of a thermal atomic beam sourc…
Evaluation of the relativistic redshift in frequency standards at KRISS
Jisun Lee, Jay Hyoun Kwon, Chang Yong Park +4
Relativistic redshift correction should be accurately considered in frequency comparisons between frequency standards. In this study, we evaluated the relativistic redshift at Kore…
Roadmap towards the redefinition of the second
N. Dimarcq, M. Gertsvolf, G. Mileti +34
This paper outlines the roadmap towards the redefinition of the second, which was recently updated by the CCTF Task Force created by the CCTF in 2020. The main achievements and the…
Evaluation of the blackbody radiation shift of an Yb optical lattice clock at KRISS
Myoung-Sun Heo, Huidong Kim, Dai-Hyuk Yu +2
As optical clocks are improved to reach the frequency uncertainty below the 10 level, the frequency shift due to the blackbody radiation (BBR) has been one of the major sys…
Absolute frequency measurement of the 171Yb optical lattice clock at KRISS using TAI for over a year
Huidong Kim, Myoung-Sun Heo, Chang Yong Park +2
We report a measurement of the absolute frequency of the 1S0-3P0 transition in the 171Yb optical lattice clock at KRISS (KRISS-Yb1) for 14 months, which was referenced to the SI se…
High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL
R. Santagata, D. Tran, B. Argence +14
There is an increasing demand for precise molecular spectroscopy, in particular in the mid-infrared fingerprint window that hosts a considerable number of vibrational signatures, w…
Nonlinear, Nonequilibrium and Collective Dynamics in a Periodically Modulated Cold Atom System
Geol Moon, Myoung-Sun Heo, Yonghee Kim +2
The physics of critical phenomena in a many-body system far from thermal equilibrium is an interesting and important issue to be addressed both experimentally and theoretically. Th…
Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock at KRISS Relative to the SI Second
Huidong Kim, Myoung-Sun Heo, Won-Kyu Lee +4
We measured the absolute frequency of the - transition of Yb atoms confined in a one-dimensional optical lattice relative to the SI second. The determined f…
Precise measurements of optical Feshbach resonances of Yb atoms
Min-Seok Kim, Jeongwon Lee, Jae Hoon Lee +2
We present precise measurements of the optical Feshbach resonances (OFRs) of Yb atoms for the intercombination transition. We measure the photoassociation (PA) spectra of a…
Cancellation of Collisional Frequency Shifts in Optical Lattice Clocks with Rabi Spectroscopy
Sangkyung Lee, Chang Yong Park, Won-Kyu Lee +1
We analyze both the s- and p-wave collision induced frequency shifts and propose a over- pulse scheme to cancel the shifts in optical lattice clocks interrogated by a Rabi pulse…
Core-Shell Magneto-Optical Trap for Alkaline-Earth-Metal-Like Atoms
Jeongwon Lee, Jae Hoon Lee, Jiho Noh +1
We propose and demonstrate a new magneto-optical trap (MOT) for alkaline-earth-metal-like (AEML) atoms where the narrow transition and the broad $…
Absolute frequency measurement of 1S0 (F = 1/2) - 3P0 (F = 1/2) transition of 171Yb atoms in a one-dimensional optical lattice at KRISS
Chang Yong Park, Dai-Hyuk Yu, Won-Kyu Lee +9
We measured the absolute frequency of the optical clock transition 1S0 (F = 1/2) - 3P0 (F = 1/2) of 171Yb atoms confined in a one-dimensional optical lattice and it was determined…
Optical repumping of triplet -states enhances magneto-optical trapping of ytterbium atoms
Jun Woo Cho, Han-gyeol Lee, Sangkyung Lee +5
Radiative decay from the excited state to metastable and states is expected to limit attainable trapped atomic population in a magneto-optic trap of ytterbi…
Laser induced birefringence in a wavelength-mismatched cascade system of inhomogeneously broadened Yb atoms
Tai Hyun Yoon, Chang Yong Park, Sung Jong Park
We report the observation of laser induced birefringence (LIB) in a wavelength-mismatched cascade system (J=0 \leftrightarrow J=1 \leftrightarrow J=0 transitions) of inhomogeneousl…
Efficient magneto-optical trapping of Yb atoms with a violet laser diode
Chang Yong Park, Tai Hyun Yoon
We report the first efficient trapping of rare-earth Yb atoms with a high-power violet laser diode (LD). An injection-locked violet LD with a 25 mW frequency-stabilized output was…