Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Heejoo Choi"'
Autor:
Tianyi Wang, Lei Huang, Xiaolong Ke, Yi Zhu, Heejoo Choi, Weslin Pullen, Vipender Negi, Daewook Kim, Mourad Idir
Publikováno v:
Journal of Synchrotron Radiation, Vol 30, Iss 1, Pp 65-75 (2023)
Grazing-incidence reflective optics are commonly used in synchrotron radiation and free-electron laser facilities to transport and focus the emitted X-ray beams. To preserve the imaging capability at the diffraction limit, the fabrication of these op
Externí odkaz:
https://doaj.org/article/6fb1fb511bab4846813e263e66695341
Autor:
Daewook Kim, Heejoo Choi, Trenton Brendel, Henry Quach, Marcos Esparza, Hyukmo Kang, Yi-Ting Feng, Jaren N. Ashcraft, Xiaolong Ke, Tianyi Wang, Ewan S. Douglas
Publikováno v:
Opto-Electronic Advances, Vol 4, Iss 6, Pp 1-24 (2021)
Significant optical engineering advances at the University of Arizona are being made for design, fabrication, and construction of next generation astronomical telescopes. This summary review paper focuses on the technological advances in three key ar
Externí odkaz:
https://doaj.org/article/61cf48bae1d54108b48774cc41dcdbe0
Autor:
Weslin C. Pullen, Tianyi Wang, Heejoo Choi, Xiaolong Ke, Vipender S. Negi, Lei Huang, Mourad Idir, Daewook Kim
Publikováno v:
Photonics, Vol 10, Iss 3, p 286 (2023)
Over the past few decades, computer-controlled optical surfacing (CCOS) systems have become more deterministic. A target surface profile can be predictably achieved with a combination of tools of different sizes. However, deciding the optimal set of
Externí odkaz:
https://doaj.org/article/5b079e1302514e7cb4d137f9aa72bdaa
Autor:
Tianyi Wang, Lei Huang, Hyukmo Kang, Heejoo Choi, Dae Wook Kim, Kashmira Tayabaly, Mourad Idir
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
Abstract With the rapid evolution of synchrotron X-ray sources, the demand for high-precision X-ray mirrors has greatly increased. Single nanometer profile error is required to keep imaging capability at the diffraction limit. Ion Beam Figuring (IBF)
Externí odkaz:
https://doaj.org/article/a1b82a51f04d41bf9ba9e67a4663ca66
Autor:
Eunmo Kang, Heejoo Choi, Brandon Hellman, Joshua Rodriguez, Braden Smith, Xianyue Deng, Parker Liu, Ted Liang-Tai Lee, Eric Evans, Yifan Hong, Jiafan Guan, Chuan Luo, Yuzuru Takashima
Publikováno v:
Micromachines, Vol 13, Iss 9, p 1444 (2022)
In a lidar system, replacing moving components with solid-state devices is highly anticipated to make a reliable and compact lidar system, provided that a substantially large beam area with a large angular extent as well as high angular resolution is
Externí odkaz:
https://doaj.org/article/660a5a44a6cd420685d7b902f758b5cf
Autor:
Henry Quach, Hyukmo Kang, Siddhartha Sirsi, Aman Chandra, Heejoo Choi, Marcos Esparza, Karlene Karrfalt, Joel Berkson, Yuzuru Takashima, Art Palisoc, Jonathan W. Arenberg, Christopher Walker, Christian Drouet d’Aubigny, Daewook Kim
Publikováno v:
Photonics, Vol 9, Iss 1, p 1 (2021)
The metrology of membrane structures, especially inflatable, curved, optical surfaces, remains challenging. Internal pressure, mechanical membrane properties, and circumferential boundary conditions imbue highly dynamic slopes to the final optic surf
Externí odkaz:
https://doaj.org/article/dc13956ad96242848ae031a20b377a4a
Publikováno v:
Optical Review. 30:232-237
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce7b9b97b56362fd67af6624b18bb0ec
https://doi.org/10.1007/s10043-023-00791-2
https://doi.org/10.1007/s10043-023-00791-2
Autor:
Tianyi Wang, Xiaolong Ke, Lei Huang, Vipender Negi, Heejoo Choi, Wesllin Pullen, Daewook Kim, Yi Zhu, Mourad Idir
Publikováno v:
Journal of Manufacturing Processes. 87:97-105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40d8973a957afcbeaa197b7cdff51439
https://doi.org/10.1016/j.jmapro.2023.01.005
https://doi.org/10.1016/j.jmapro.2023.01.005
Autor:
Yuzuru Takashima, Xianyue Deng, Chin-I Tang, Eunmo Kang, Heejoo Choi, Ching-Wen Chan, Jeff Chen, Brandon Hellman, Ted Liang-tai Lee, Parker Liu, Gregory M. Nero, Tianyao Zhang, Yexin Pei
Publikováno v:
Practical Holography XXXVII: Displays, Materials, and Applications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d64128e7ef907119a299082ec1eab642
https://doi.org/10.1117/12.2656192
https://doi.org/10.1117/12.2656192
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems. 8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86f964ad23d1223d8063138d3a1a0774
https://doi.org/10.1117/1.jatis.8.4.045003
https://doi.org/10.1117/1.jatis.8.4.045003