Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Changmin Ahn"'
Publikováno v:
APL Photonics, Vol 8, Iss 12, Pp 120804-120804-10 (2023)
Compact and robust frequency-stabilized laser sources are critical for a variety of fields that require stable frequency standards, including field spectroscopy, radio astronomy, microwave generation, and geophysical monitoring. In this work, we appl
Externí odkaz:
https://doaj.org/article/ed33bf8986fa42dab816f43cd9109392
Autor:
Yongjin Na, Hyunsoo Kwak, Changmin Ahn, Seung Eon Lee, Woojin Lee, Chu-Shik Kang, Jungchul Lee, Junho Suh, Hongki Yoo, Jungwon Kim
Publikováno v:
Light: Science & Applications, Vol 12, Iss 1, Pp 1-10 (2023)
Ultrafast multidimensional imaging is made possible by the electro-optic sampling of arrival timings of multiple space-to-wavelength encoded light pulses.
Externí odkaz:
https://doaj.org/article/1b3a5793ce1e4eeb914980b0c1d7bde5
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 5, Pp 1-8 (2022)
Three-dimensional integrated circuits (3D-ICs) are becoming more significant in portable devices, autonomous vehicles, and data centers. As the demand for highly integrated and high-performance semiconductor devices grows, recent 3D integration techn
Externí odkaz:
https://doaj.org/article/59a2b940f03149d5b261759d259e8116
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
For edge-sensitive timing applications, the edge jitter of electrical pulses is important. Here, the authors report on very low rising edge jitter extracted from an optical frequency comb and explore the best condition for low jitter by minimizing th
Externí odkaz:
https://doaj.org/article/2109b317bf6e45f6af99021e174c664c
Autor:
Jungwon Kim, Yongjin Na, Hyunsoo Kwak, Changmin Ahn, Seung Eon Lee, Woojin Lee, Chu-Shik Kang, Jungchul Lee, Junho Suh, Hongki Yoo
Publikováno v:
Light: Science & Applications. 12
High-speed and high-resolution imaging of surface profiles is critical for the investigation of various structures and mechanical dynamics of micro- and nano-scale devices. In particular, recent emergence of various nonlinear, transient and complex m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f62cb3a1b9afbf00af810546e42b9a6b
https://doi.org/10.1038/s41377-023-01077-7
https://doi.org/10.1038/s41377-023-01077-7
Publikováno v:
Optics and Lasers in Engineering. 162:107414
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7203647e3b9cbadd9e649d64a9ef6fea
https://doi.org/10.1016/j.optlaseng.2022.107414
https://doi.org/10.1016/j.optlaseng.2022.107414
Publikováno v:
Nature Photonics. 14:355-360
Displacement measurement is a fundamental functionality in modern science and technology. Although there has been remarkable progress in the precision of such measurements with various laser ranging methods1–8, they are incapable of capturing fast
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dc79ae6a34f8aea91dd8c87324cacb6
https://doi.org/10.1038/s41566-020-0586-0
https://doi.org/10.1038/s41566-020-0586-0
Synchronization of an optical frequency comb and a microwave oscillator with -174 dBc/Hz noise floor
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate optical-microwave timing synchronization by employing electro-optic sampling-based timing detector with residual phase noise (at 8-GHz carrier) of –174.5 dBc/Hz at 100 kHz offset frequency and 88-as integrated timing jitter (over 1-M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adf4ad25370bc4412c3d4bbb2c917960
https://doi.org/10.1364/cleo_si.2021.sth1c.5
https://doi.org/10.1364/cleo_si.2021.sth1c.5
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate high-precision (~10-nm repeatability) and large-dynamic-range (120 dB dynamic-range with ~9-mm ambiguity range) three-dimensional surface profile imaging technique by combining an optical frequency comb, an electro-optic-sampling-based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a244bfaa0fa08ae90c3b150f218cd492
https://doi.org/10.1364/cleo_si.2021.sm1g.2
https://doi.org/10.1364/cleo_si.2021.sm1g.2
Publikováno v:
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
There has been remarkable progress in generating ultralow-noise microwaves from optical frequency combs in the last decade. While a combination of techniques has enabled tens to hundreds of attoseconds residual jitter in microwave extraction, so far
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::626a9230542e15997725c8482456a10e
https://doi.org/10.1038/s41467-020-17460-6
https://doi.org/10.1038/s41467-020-17460-6