38 citations · 38 across the 4 of their papers we have counts for
5 papers
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…
FPGA-based disturbance-observer servo for broadband noise suppression in laser frequency stabilization
Meung Ho Seo, Jae Hoon Lee, Young-Ho Park +7
We have demonstrated broadband frequency-noise suppression in a laser stabilization system by augmenting a conventional proportional-integral-derivative (PID) controller with a dig…
High-stability offset-frequency locking of two lasers using a balanced filter discriminator
Sang Eon Park, Meung Ho Seo, Young-Ho Park +6
We demonstrate a high-stability laser offset-frequency locking technique based on a balanced filter discriminator. The beat note between two 852 nm external-cavity diode lasers is…
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…
Drift-compensated Low-noise Frequency Synthesis Based on a cryoCSO for the KRISS-F1
Myoung-Sun Heo, Sang Eon Park, Won-Kyu Lee +9
In this paper we report on the implementation and stability analysis of a drift-compensated frequency synthesizer from a cryogenic sapphire oscillator (CSO) designed for a Cs/Rb at…