Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Bong-Ahn Yu"'
Autor:
Hun-Kook Choi, Young-Jun Jung, Bong-Ahn Yu, Jae-Hee Sung, Ik-Bu Sohn, Jong-Yeol Kim, Md. Shamim Ahsan
Publikováno v:
Applied Sciences, Vol 12, Iss 2, p 886 (2022)
This paper demonstrates the fabrication of radiation-resistant fiber Bragg grating (FBG) sensors using infrared femtosecond laser irradiation. FBG sensors were written inside acrylate-coated fluorine-doped single-mode specialty optical fibers. We det
Externí odkaz:
https://doaj.org/article/c255b01f4d4a46ea8d6f2f4c4b01b9cf
Autor:
Bong Ahn Yu, Hun-Kook Choi, Young-Jun Jung, Jongyeol Kim, Cherl-Hee Lee, Md. Shamim Ahsan, Ik-Bu Sohn
Publikováno v:
Optical Engineering. 59
We demonstrate a technique for fabricating microstrip patch antennas using femtosecond laser patterning followed by ultraviolet beam and chemical treatment. Initially, we design the physical parameters of both single-slot and double-slot microstrip p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::035bd19127dd522b3fd322ef8a9bea5b
https://doi.org/10.1117/1.oe.59.9.096103
https://doi.org/10.1117/1.oe.59.9.096103
Autor:
Jihoon Kim, Yong Wook Lee, Bong-Ahn Yu, Hyun Wook Kang, Seung Yun Nam, Bong-Jun Kim, Junghwan Oh
Publikováno v:
Journal of the Korean Physical Society. 68:323-328
By incorporating a 966-nm pump laser diode, we realized bidirectional laser triggering in a twoterminal planar device based on a highly-resistive vanadium-dioxide (VO2) thin film grown by using the pulsed laser deposition method. Bidirectional laser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcb10701bcd91d3acd4bcd6c885d0a52
https://doi.org/10.3938/jkps.68.323
https://doi.org/10.3938/jkps.68.323
Publikováno v:
Scientific Reports
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
Tendons are tough, flexible, and ubiquitous tissues that connect muscle to bone. Tendon injuries are a common musculoskeletal injury, which affect 7% of all patients and are involved in up to 50% of sports-related injuries in the United States. Vario
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fce8991a7ff8b77e1e8d8b9e47e1ea4
https://pubmed.ncbi.nlm.nih.gov/29556037
https://pubmed.ncbi.nlm.nih.gov/29556037
Publikováno v:
Optics & Laser Technology. 119:105579
We experimentally demonstrate the use of Fe3O4-based saturable absorber (SA) to generate self-starting, passively Q-switched pulses at 1943 nm. The Fe3O4 particles were characterized with scanning electron microscopy with energy dispersive spectrosco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd0bba0b56131c519ee11f561abd9ce0
https://doi.org/10.1016/j.optlastec.2019.105579
https://doi.org/10.1016/j.optlastec.2019.105579
Publikováno v:
Lasers Congress 2016 (ASSL, LSC, LAC).
We demonstrate a novel method for efficient frequency tripling of 1064-nm infrared beam. The walk-off in the frequency mixing is doubly compensated for, resulting in an improvement of the conversion efficiency and ultraviolet beam profile.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b90c2cce30dd1ef47d6e4d6fac16f7a
https://doi.org/10.1364/assl.2016.jth2a.17
https://doi.org/10.1364/assl.2016.jth2a.17
Autor:
Young Ho Park, Young Seok Yoon, Woojin Shin, Bong-Ahn Yu, Chang Su Jun, Kyuhong Choi, Minwan Jung
Publikováno v:
Laser Physics Letters. 16:015102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c2b8aa47c14b57d68b3616a3a79e3ce
https://doi.org/10.1088/1612-202x/aaee11
https://doi.org/10.1088/1612-202x/aaee11
Publikováno v:
Optics Communications. 283:2097-2101
We have proposed highly sensitive strain and bending sensor with very low temperature sensitivity based on in-line Mach–Zehnder interferometer (MZI) in solid core large mode area photonic crystal fiber (PCF) and experimentally investigated its nove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ad750a57baca510802212cf1090e737
https://doi.org/10.1016/j.optcom.2010.01.008
https://doi.org/10.1016/j.optcom.2010.01.008
Publikováno v:
Optics Communications. 282:3456-3459
We report a new helicoidal long-period grating by twisting a photonic crystal fiber under CO2 laser irradiation and experimentally investigated its novel transmission characteristics. The fabricated helicoidal PCF-LPG has a relatively short length of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9221cfa5e32e0359a46f1dfbb90e09f
https://doi.org/10.1016/j.optcom.2009.05.063
https://doi.org/10.1016/j.optcom.2009.05.063
Publikováno v:
Optics Communications. 282:1191-1195
We demonstrate a cost effective wavelength tunable optical time-domain reflectometry (OTDR) for wavelength division multiplexing passive optical networks (WDM-PON). In order to realize the unique wavelength tunable optical time-domain reflectometry (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee02e7c1f5217c0e88a72233f9838d61
https://doi.org/10.1016/j.optcom.2008.11.076
https://doi.org/10.1016/j.optcom.2008.11.076