In Cheol Yu

Yu, In Cheol (유인철)

Postdoc. researcher: KAIST, Department of Physics (09.2024 ~)

Ph.D. in Physics: KAIST (02.2018 ~ 08.2024)
Thesis title: Ultrafast coherent spin control using THz-to-visible light sources

B.S. in Physics: Yonsei University (02.2014 ~ 02.2018)

Research area: Ultrafast magneto-optic spectroscopy & Terahertz Spectroscopy

E-mail: ironman1995[at]kaist.ac.kr

Publications

Journals

†: First, *: Corresponding

In Cheol Yu†, Jung Hyun Oh†, Je-Ho Shim, Kab-Jin Kim, Byong-Guk Park, Dong-Hyun Kim, Kyoung-Whan Kim, Hyun-Woo Lee, Kyung-Jin Lee*, Fabian Rotermund*, “Laser-induced coherent spin change due to spin-orbit coupling”, npj Spintronics, accepted for publication (2025).
Jeong‐A Yang, Chae‐Won Lee, Chaeyoon Kim, Michael Auer, In Cheol Yu, Jungkwon Oh, Woojin Yoon, Hoseop Yun, Dongwook Kim, Mojca Jazbinsek*, Fabian Rotermund*, O‐Pil Kwon*, "Chiral Cationic Chromophores: A New Class of Efficient Ultrabroadband Organic THz Crystals", Adv. Optical Mater. 12, 2400343 (2024).
In Cheol Yu, Byeong-Gyu Park, Sung Baek Kim, Namgyu Noh, Jong Min Yuk, Yeongkwan Kim, Fabian Rotermund*, “Study on microscopic origin of spin excitation in TmFeO3 by time-resolved multicolor optical pump-probe spectroscopy”, Cur. Appl. Phys. 62, 54-59 (2024).
Ga‐Eun Yoon, Dong‐Joo Kim, Yu‐Jin Park, Chaeyoon Kim, Seung‐Jun Kim, Bong‐Rim Shin, Yun‐Sang Lee, Chae‐Won Lee, Jung‐Wook Park, In Cheol Yu, Woojin Yoon, Hoseop Yun, Dongwook Kim, Mojca Jazbinsek*, Fabian Rotermund*, O‐Pil Kwon*, "Symmetry Reduction of Molecular Shape of Cationic Chromophores for High-Performance Terahertz Generators", Adv. Optical Mater. 12, 2400413 (2024).
Dong‐Joo Kim†, In Cheol Yu†, Mojca Jazbinsek, Chaeyoon Kim, Woojin Yoon, Hoseop Yun, Sang‐Wook Kim, Dongwook Kim, Fabian Rotermund*, O‐Pil Kwon*, “Local Rigidity by Flexibility: Unusual Design for Organic THz‐Device Materials”, Adv. Opt. Mater. 11, 2300807 (2023).
Bong-Rim Shin†, In Cheol Yu†, Uros Puc†, Won Tae Kim, Woojin Yoon, Chaeyoon Kim, Hoseop Yun, Dongwook Kim, Mojca Jazbinsek*, Fabian Rotermund*, O-Pil Kwon*, "Design and Validation of Isomorphic Crystal Library for Nonlinear Optics and THz Wave Generation", Adv. Opt. Mater. 11, 2201420 (2023).
Bong-Rim Shin†, In Cheol Yu†, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Sang-Wook Kim, Dongwook Kim, Fabian Rotermund*, O-Pil Kwon*, "Dichlorinated Organic-Salt Terahertz Sources for THz Spectroscopy", Adv. Optical Mater. 11, 2202027 (2023).
Seung-Jun Kim†, In Cheol Yu†, Dong-Joo Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Dongwook Kim, Fabian Rotermund*, O-Pil Kwon*, "A New Class of Organic Crystals with Extremely Large Hyperpolarizability: Efficient THz Wave Generation with Wide Flat-Spectral-Band", Adv. Funct. Mater. 33, 2209915 (2023).
Bong-Rim Shin†, In Cheol Yu†, Myeong-Hoon Shin, Mojca Jazbinsek, Fabian Rotermund*, O-Pil Kwon*, "Efficient organic terahertz generator with extremely broad terahertz molecular vibrational mode-free range", APL Mater. 11, 011101 (2023).
Seung-Jun Kim†, Jin-Hong Seok†, In Cheol Yu†, Jeong Hyeon Lee†, Won Tae Kim, Bong-Rim Shin, Ga-Eun Yoon, Yun-Sang Lee, Jin Chul Kim, Woojin Yoon, Hoseop Yun, Mojca Jazbinsek, Sang Kyu Kwak*, Fabian Rotermund*, O-Pil Kwon*, "Orthogonal Molecular Assembly: Eliminating Intrinsic Phonon Modes in Organic THz Generators", Adv.Optical Mater. 10, 2102654 (2022).
Bong-Rim Shin†, Se-In Kim†, Dongwook Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, In Cheol Yu, Fabian Rotermund, O-Pil Kwon*, "New N-pyrimidinyl stilbazolium crystals for second-order nonlinear optics", Opt. Laser Technol. 156, 108454 (2022).
Yun-Sang Lee†, Woojin Yoon, Hoseop Yun, Mojca Jazbinsek, In Cheol Yu, Fabian Rotermund, Dongwook Kim, O-Pil Kwon*, "New organic 4-(4-methoxystyryl)-1-methylpyridinium crystals for nonlinear optical applications", Bull. Korean Chem. Soc. 43:1247–1253 (2022).
Ga-Eun Yoon†, Jin-Hong Seok†, Uros Puc†, Bong-Rim Shin, Woojin Yoon, Hoseop Yun, Dongwook Kim, In Cheol Yu, Fabian Rotermund, Mojca Jazbinsek*, O-Pil Kwon*, "Phonon-Suppressing Intermolecular Adhesives: Catechol-Based Broadband Organic THz Generators", Adv. Sci. 9, 2201391 (2022).
Seung-Jun Kim, Se-In Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Dongwook Kim, In Cheol Yu, Fabian Rotermund*, O-Pil Kwon*, “Design Strategy of Highly Efficient Nonlinear Optical Orange‐Colored Crystals with Two Electron‐Withdrawing Groups”, Adv. Photon. Res. 3, 2100350 (2022)
Jin-Hong Seok†, Deokjoong Kim†, Won Tae Kim†, Seung-Jun Kim, Woojin Yoon, Ga-Eun Yoon, In Cheol Yu, Mojca Jazbinsek, Sang-Wook Kim, Hoseop Yun, Dongwook Kim, Fabian Rotermund*, O-Pil Kwon*, "Organic THz Generators: A Design Strategy for Organic Crystals with Ultralarge Macroscopic Hyperpolarizability", Adv. Optical Mater. 9, 210032 (2021).
Jin-Hong Seok†, Uros Puc†, Seung-Jun Kim, Woojin Yoon, Hoseop Yun, In Cheol Yu, Fabian Rotermund, Dongwook Kim, Mojca Jazbinsek*, O-Pil Kwon*. "High-Density Organic Electro-Optic Crystals for Ultra-Broadband THz Spectroscopy", Adv. Optical Mater. 9, 2100618 (2021).
Seung-Jun Kim†, In Cheol Yu†, Ji-Ah Lee, Won Tae Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Fabian Rotermund*, O-Pil Kwon*. "New benzothiazolium crystals with very large off-diagonal optical nonlinearity", Dyes Pigm. 192, 109433 (2021).
Myeong-Hoon Shin†, Won Tae Kim†, Se-In Kim, Seung-Jun Kim, In Cheol Yu, Sang-Wook Kim, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Fabian Rotermund*, O-Pil Kwon*. "Organic Broadband THz Generators Optimized for Efficient Near-Infrared Optical Pumping", Adv. Sci. 7, 2001738 (2020).
Deokjoong Kim†, Won Tae Kim†, Jin-Hong Seok, In Cheol Yu, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Dongwook Kim, Fabian Rotermund*, O-Pil Kwon*. "Molecular salt crystals with bis(head-to-tail) interionic complementary assembly for efficient organic THz generators", J. Mater. Chem. C 8, 10078-10085 (2020).
Se‐In Kim, Won Tae Kim, Jin‐Hong Seok, Mojca Jazbinsek, Woojin Yoon, In Cheol Yu, Hoseop Yun, Dongwook Kim, Fabian Rotermund*, O‐Pil Kwon*. "Organic σ‐Hole Containing Crystals with Enhanced Nonlinear Optical Response and Efficient Optical‐to‐THz Frequency Conversion", Adv. Optical Mater. 8, 1901840 (2020).
Ji‐Ah Lee, Won Tae Kim, Mojca Jazbinsek, Deokjoong Kim, Seung‐Heon Lee, In Cheol Yu, Woojin Yoon, Hoseop Yun, Fabian Rotermund*, O‐Pil Kwon*, “X‐Shaped Alignment of Chromophores: Potential Alternative for Efficient Organic Terahertz Generators”, Adv. Optical Mater. 8, 1901921 (2020).
Myeong‐Hoon Shin, Won Tae Kim, Se‐In Kim, Seung‐Heon Lee, In Cheol Yu, Mojca Jazbinsek, Woojin Yoon, Hoseop Yun, Dongwook Kim, Fabian Rotermund*, O‐Pil Kwon*, "Efficient Gap‐Free Broadband Terahertz Generators Based on New Organic Quinolinium Single Crystals", Adv. Optical Mater. 7, 1900953 (2019).

International conferences

In Cheol Yu, Fabian Rotermund*, Jung Hyun Oh, San Ko, Kab-Jin Kim, Kyung-Jin Lee, “Exploration of Light-Spin Interaction: Coherent Dynamics and Laser-Induced Effects”, 16th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2024), Incheon, Korea (2024).
In Cheol Yu, Won Tae Kim, Byong-Guk Park, Kap-Jin Kim, Fabian Rotermund*, "Investigation of laser-induced excitation of spin states by double-pumped THz emission spectroscopy", 11th International Symposium on Metallic Multilayers (2023).
In Cheol Yu, Je-Ho Shim, Byong-Guk Park, Kap-Jin Kim, Dong-Hyun Kim, Jung Hyun Oh, Kyung-Jin Lee, Fabian Rotermund*, "Laser-induced Nonthermal Spin Dynamics in Ferromagnetic Materials Probed by Ultrafast Magneto-optic Spectroscopy", Conference on Lasers & Electro-Optics Europe and European Quantum Electronics Conference (CLEO/Europe-EQEC) (2023).
In Cheol Yu, Seung-Jun Kim, Ji-Ah Lee, Won Tae Kim, O-Pil Kwon, Fabian Rotermund*, "Efficient THz Wave Generation from Highly Nonlinear Organic Benzothiazolium Crystals", The 12th International Conference on Advanced Materials and Devices (ICAMD) (2021).

Domestic conferences

In Cheol Yu†, Yanggeun Joo, Heejun Yang, Kab-Jin Kim, Kyung-Jin Lee & Fabian Rotermund*, "Enhanced ultrafast spin control through the interface effect of magnetic bilayers", The 15th Asia Phacific Physics conference (APPC15) (2022)
유인철†, 김용관, 박병규 & 이상민*, "교환상호작용을 통한 초고속 스핀파 발생", 첨단레이저 및 레이저 응용 워크샵 (ALTA) (2022)
유인철†, 김원태, 김갑진, 이경진 & 이상민*, "스핀-각운동량 상호작용에 의한 결맞는 스핀 전이", 한국광학회, 하계학술발표회 (2021)
(Awarded) 유인철†, 김원태, 박병규, 김동하, 서민교 & 이상민*, "금속 박막에서의 자기 동역학 분광", 한국광학회, 하계학술발표회 (2020).
In Cheol Yu†, Won Tae Kim & Fabian Rotermund*, "Broadband Time Domain Spectroscopy of Magnetism", BrainKorea21+, KAIST, The 12th BK21+ Young Physicists Workshop (2020).
유인철†, 김원태, 박병규 & 이상민*, "자기광 유도된 결맞는 스핀파 발생", 한국광학회, 첨단레이저 및 레이저 응용 워크샵 (ALTA) (2019).