Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Park, Chang Yong"'
Autor:
Lee, Jisun, Kwon, Jay Hyoun, Park, Chang Yong, Kim, Huidong, Choi, In-Mook, Chung, Jin Wan, Lee, Won-Kyu
Relativistic redshift correction should be accurately considered in frequency comparisons between frequency standards. In this study, we evaluated the relativistic redshift at Korea Research Institute of Standards and Science (KRISS) using three diff
Externí odkaz:
http://arxiv.org/abs/2401.04943
As optical clocks are improved to reach the frequency uncertainty below the 10$^{-17}$ level, the frequency shift due to the blackbody radiation (BBR) has been one of the major systematic effects hindering further improvement. To evaluate the BBR shi
Externí odkaz:
http://arxiv.org/abs/2207.07322
Absolute frequency measurement of the 171Yb optical lattice clock at KRISS using TAI for over a year
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 second by primary and secondary standards worldwide via TAI (Internation
Externí odkaz:
http://arxiv.org/abs/2108.00108
Publikováno v:
Applied Optics Vol. 59, Issue 28, pp. 8918-8924 (2020)
An experimental method is developed for the robust frequency stabilization using a high-finesse cavity when the laser exhibits large intermittent frequency jumps. This is accomplished by applying an additional slow feedback signal from Doppler-free f
Externí odkaz:
http://arxiv.org/abs/2010.01776
Publikováno v:
In Additive Manufacturing 25 August 2023 76
Publikováno v:
Current Optics and Photonics, Vol. 3, No. 2, April 2019, pp. 128-134
The vibration sensitivities of optical cavities depending on the support-area were investigated both numerically and experimentally. We performed the numerical simulation with two models; one with total constraint over the support area, and the other
Externí odkaz:
http://arxiv.org/abs/1811.02686
Autor:
Kim, Huidong, Heo, Myoung-Sun, Lee, Won-Kyu, Park, Chang Yong, Hong, Hyun-Gue, Hwang, Sang-Wook, Yu, Dai-Hyuk
We measured the absolute frequency of the $^1S_0$ - $^3P_0$ transition of $^{171}$Yb atoms confined in a one-dimensional optical lattice relative to the SI second. The determined frequency was 518 295 836 590 863.38(57) Hz. The uncertainty was reduce
Externí odkaz:
http://arxiv.org/abs/1701.04534
Autor:
Heo, Myoung-Sun, Park, Sang Eon, Lee, Won-Kyu, Lee, Sang-Bum, Hong, Hyun-Gue, Kwon, Taeg Yong, Park, Chang Yong, Yu, Dai-Hyuk, Santarelli, G., Hilton, Ashby, Luiten, Andre N., Hartnett, John G.
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 atomic fountain clock. The synthesizer has two microwave outputs of 7 GH
Externí odkaz:
http://arxiv.org/abs/1610.02027
Autor:
Chung, Yeounoh, Park, Chang-yong, Kim, Noo-ri, Cho, Hana, Yoon, Taebok, Lee, Hunjoo, Lee, Jee-Hyong
Publikováno v:
ETRI Journal 35.6 (2013): 1058-1067
An approach for game bot detection in MMORPGs is proposed based on the analysis of game playing behavior. Since MMORPGs are large scale games, users can play in various ways. This variety in playing behavior makes it hard to detect game bots based on
Externí odkaz:
http://arxiv.org/abs/1509.02458
We analyze both the s- and p-wave collision induced frequency shifts and propose a over-$\pi$ pulse scheme to cancel the shifts in optical lattice clocks interrogated by a Rabi pulse. The collisional frequency shifts are analytically solved as a func
Externí odkaz:
http://arxiv.org/abs/1502.02742