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PhDs
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Dr. Kwangyun Jung (정광연)
Current Position: Research Professor at Nagoya University (Nagoya, Japan, Sep 2022-)
Senior Researcher at KIMM (Daejeon, Korea) [May 2019-Aug 2022]
Senior Engineer at Samsung Electro-Mechanics Co. Ltd. (Suwon, Korea) [April 2017-April 2019]
Research Associate at SYRTE (Paris, France) [Mar 2016 - Mar 2017]
Master-PhD Student @ UPCaM [Feb 2010 - Dec 2015]
Worked on low-noise, fs-laser-based rf synchronization and synthesizers
Education:
KAIST, PhD in Mechanical Engineering, Feb 2016.
KAIST, BS in Mechanical Engineering, Feb 2010.
Selected Publication @ UPCaM:
- K. Jung and J. Kim, "All-fibre-photonic signal generator for attosecond optical timing and ultralow-noise microwave," Scientific Reports 5, 16250 (2015).
- K. Jung and J. Kim, "Characterization of timing jitter spectra in free-running mode-locked lasers with 340 dB dynamic range over 10 decades of Fourier frequency," Optics Letters 40, 316-319 (2015).
- K. Jung, J. Lim, J. Shin, H. Yang, L. Chen, F. X. Kaertner, H. Kang, C. Min, and J. Kim, "Remote laser-microwave synchronization over kilometer-scale fiber link with few-femtosecond drift," Journal of Lightwave Technology 32, 3742-3748 (2014).
- K. Jung, J. Shin, J. Kang, S. Hunziker, C. Min, and J. Kim, "Frequency comb-based microwave transfer over fiber with 7x10^(-19) instability using fiber-loop optical-microwave phase detectors," Optics Letters 39, 1577-1580 (2014).
- K. Jung, J. Shin, and J. Kim, "Ultralow phase noise microwave generation from mode-locked Er-fiber lasers with subfemtosecond integrated timing jitter," IEEE Photonics Journal 5, 5500906 (2013).
- K. Jung and J. Kim, "Sub-femtosecond synchronization of microwave oscillators with mode-locked Er-fiber lasers," Optics Letters 37, 2958-2960 (2012).
Awards: Outstanding Student Paper Award from COOC 2015, June 2015
Student Paper Competition Finalist in IEEE-IFCS 2013, 2014 & 2015
Outstanding TA Award from KAIST ME (MAE460 Automatic Control, Fall 2011)
Visiting Research:
DESY-CFEL and MPQ (Germany) [Aug 2014]
Tianjin University and Peking University (China) [Sep 2015]
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Dr. Chur Kim (김철)
Current Position: Senior Researcher at Korea Electrotechnology Research Institute (KERI, 한국전기연구원, Advanced Medical Device Research Division, Ansan, Korea, Jan 2017-)
Master-PhD Student @ UPCaM [Feb 2011 - Dec 2016]
Worked on low-noise and robust all-fiber mode-locked lasers based on PLC devices
Education:
KAIST, PhD in Mechanical Engineering, Feb 2017.
KAIST, BS in Mechanical Engineering, Feb 2011.
Selected Publication @ UPCaM:
- C. Kim, D. Kwon, D. Kim, S. Choi, S. Cha, K. Choi, D. Yeom, F. Rotermund, and J. Kim, "Robust, low-noise, polarization-maintaining mode-locked Er-fiber laser with a planar lightwave circuit (PLC) device as a multi-functional element," Optics Letters 42, 1472-1475 (2017).
- C. Kim, D. Kim, Y. Cheong, D. Kwon, S. Choi, H. Jeong, S. Cha, J. Lee, D. Yeom, F. Rotermund, and J. Kim, "300-MHz-repetition-rate, all-fiber, femtosecond laser mode-locked by planar lightwave circuit-based saturable absorber," Optics Express 23, 26234-26242 (2015).
- C. Kim, S. Bae, K. Kieu, and J. Kim, "Sub-femtosecond timing jitter, all-fiber, CNT-mode-locked Er-laser at telecom wavelength," Optics Express 21, 26533-26541 (2013).
- C. Kim, K. Jung, K. Kieu, and J. Kim, "Low timing jitter and intensity noise from a soliton Er-fiber laser mode-locked by a fiber taper carbon nanotube saturable absorber," Optics Express 20, 29524-29530 (2012).
Awards: Outstanding Doctoral Thesis Award from KAIST ME, Sep 2017.
Outstanding Student Paper Award from Photonics Conference 2012, Dec 2012.
Other Activities: President of KAIST OSA Student Chapter [Apr 2014 - Apr 2015]
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Dr. Heewon Yang (양희원)
Current Position: Senior Engineer at Samsung Electronics Co. Ltd. (Foundry Manufacturing Center, Giheung, Korea, Mar 2018-)
Master-PhD Student @ UPCaM [Feb 2011 - Dec 2017]
Worked on laser-RF synchronization for KAERI ultrafast electron diffraction (UED) systems
Education:
KAIST, PhD in Mechanical Engineering, Feb 2018.
KAIST, MS in Mechanical Engineering, Feb 2013.
KAIST, BS in Mechanical Engineering, Feb 2011.
Selected Publication:
- H. Yang, B. Han, J. Shin, D. Hou, H. Chung, I. Baek, Y. Jeong, and J. Kim, "10-fs-level synchronization of photocathode laser with RF-oscillator for ultrafast electron and X-ray sources," Scientific Reports 7, 39966 (2017).
- H. Yang, H. Kim, J. Shin, C. Kim, S. Y. Choi, G.-H. Kim, F. Rotermund, and J. Kim, "Gigahertz repetition rate, sub-femtosecond timing jitter optical pulse train directly generated from a mode-locked Yb:KYW laser," Optics Letters 39, 56-59 (2014).
- H. Yang, C. Kim, S. Y. Choi, G.-H. Kim, Y. Kobayashi, F. Rotermund, and J. Kim, "1.2-GHz repetition rate, diode-pumped Yb:KYW laser mode-locked by a carbon nanotube saturable absorber mirror," Optics Express 20, 29518-29523 (2012).
Awards: Outstanding Student Paper Award from OSK Winter Meeting 2013, Feb 2013.
Outstanding Poster Award from ICMTE 2012, Oct 2012.
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Dr. Dohyun Kim (김도현)
Current Position: Senior Researcher at Korea Institute of Machinery and Materials (KIMM, 한국기계연구원, Department of Laser and Electron Beam Application, Daejeon, Korea, December 2019-)
Master-PhD student @ UPCaM [Mar 2014 - Nov 2019]
Worked on compact, robust and low-noise femtosecond fiber lasers
Education:
KAIST, PhD in Mechanical Engineering, Feb 2020.
KAIST, MS in Mechanical Engineering, Feb 2016.
KAIST, BS in Mechanical Engineering, Feb 2014.
Tampere Univ of Tech (Finland), Exchange Student [Jan 2012 - Jun 2012]
Selected Publication:
- D. Kim, N. Park, H. Lee, J. Lee, D. Yeom, and J. Kim, "Graphene-based saturable absorber and mode-locked laser behaviors under gamma-ray radiation," Photonics Research 7, 742-747 (2019)
- D. Kim, D. Kwon, B. Lee, and J. Kim, "Polarization-maintaining nonlinear-amplifying-loop-mirror mode-locked fiber laser based on a 3x3 coupler," Optics Letters 44, 1068-1071 (2019)
- D. Kim, S. Zhang, D. Kwon, R. Liao, Y. Cui, Z. Zhang, Y. Song and J. Kim, "Intensity noise suppression in mode-locked fiber lasers by double optical bandpass filtering," Optics Letters 42, 4095-4098 (2017)
Awards: Outstanding Student Paper Award from OSK Winter Meeting 2018, Feb 2018.
Visiting Research: Tianjin University and Peking University (China) [Aug 2016]
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Dr. Chan-Gi Jeon (전찬기)
Current Position: Senior Engineer at Samsung Electronics Co. Ltd. (Memory Manufacturing Technology Center, Hwaseong, Korea, Feb 2020-)
Master-PhD student @ UPCaM [Mar 2014 - Jan 2020]
Worked on optical-microwave phase detectors and their applications
Education:
KAIST, PhD in Mechanical Engineering, Feb 2020.
KAIST, MS in Mechanical Engineering, Feb 2016.
KAIST, BS in Mechanical Engineering, Feb 2014.
Selected Publication:
- C. Jeon, Y. Na, B. Lee and J. Kim, "Simple-structured, subfemtosecond-resolution optical-microwave phase detector," Optics Letters 43, 3997-4000 (2018)
- C. Jeon, S. Zhang, J. Shin and J. Kim, "Highly tunable repetition-rate multiplication of mode-locked lasers using all-fibre harmonic injection locking," Scientific Reports 8, 13875 (2018)
Awards: Outstanding Student Paper Award from COOC 2015, Jun 2015
Outstanding Paper Award from OSK Summer Meeting 2019, Jul 2019
Other Activities: Master student representative of KAIST ME [Mar 2015 - Feb 2016]
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Dr. Junho Shin (신준호)
Current Position: Senior Engineer at Samsung Electronics Co. Ltd. (Manufacturing Technology Center, Hwaseong, Korea, Dec 2021-)
Postdoctoral Researcher at KAERI (Daejeon, Korea) [Mar 2020-Nov 2021]
Master-PhD student @ UPCaM [Mar 2013 - Feb 2020]
Worked on laser-electron synchronization for ultrafast science facilities
Education:
KAIST, PhD in Mechanical Engineering, Feb 2020.
KAIST, MS in Mechanical Engineering, Feb 2015.
KAIST, Dual BS in Electrical Engineering and Mechanical Engineering, Feb 2013.
Selected Publication:
- J. Shin, H. Kim, S. Park, H. Bark, I. Baek, K. Oang, K. Jang, K. Lee, F. Rotermund, Y. Jeong, and J. Kim, "Sub-10-fs timing for ultrafast electron diffraction with THz-driven streak camera," Laser and Photonics Reviews 15, 2000326 (2021)
- H. Kim, N. Vinokurov, I. Baek, K. Oang, M. Kim, Y. Kim, K. Jang, K. Lee, S. Park, S. Park, J. Shin, J. Kim, F. Rotermund, S. Cho, T. Feurer, and Y. Jeong, "Towards jitter-free ultrafast electron diffraction technology," Nature Photonics 14, 245-249 (2020).
- J. Shin, K. Jung, Y. Song, and J. Kim, "Characterization and analysis of timing jitter in normal-dispersion Er-fiber lasers with intra-cavity filtering," Optics Express 23, 22898-22906 (2015).
Awards: Best Poster Award from Asia-Pacific Laser Symposium (APLS) 2016, May 2016.
Outstanding Student Paper Award from OSK Winter Meeting 2016, Jan 2016.
Outstanding Poster Award from KAIST-Kyushu Univ ME Workshop 2014, Sep 2014.
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Dr. Dohyeon Kwon (권도현)
Current Position: Senior Researcher at Korea Research Institute of Standards and Science (KRISS, 한국표준과학연구원, Climate Watch and Hydrogen Quality Metrology Team, Daejeon, Korea, April 2021-)
Master-PhD student @ UPCaM [Mar 2015 - Feb 2021]
Worked on generation of ultra-stable frequency combs from integrated photonic systems
Education:
KAIST, PhD in Mechanical Engineering, Feb 2021.
KAIST, MS in Mechanical Engineering, Feb 2017.
KAIST, BS in Mechanical Engineering, Feb 2015.
Karlsruhe Inst of Tech (Germany), Exchange Student [Aug 2012 - Apr 2013]
Selected Publication:
- D. Kwon^, D. Jeong^, I. Jeon, H. Lee, and J. Kim, "Ultrastable microwave and soliton-pulse generation from fibre-photonic-stabilized microcombs," Nature Communications 13, 381 (2022).
- D. Jeong^, D. Kwon^, I. Jeon, I. Do, J. Kim, and H. Lee, "Ultralow-jitter silica microcomb," Optica 7, 1108-1111 (2020).
- D. Kwon, C. Jeon, D. Kim, I. Jeon, and J. Kim, "Femtosecond synchronization of multiple mode-locked lasers and a microwave oscillator by multi-color electro-optic sampling," Optics Letters 45, 3155-3158 (2020).
- D. Kwon, I. Jeon, W. Lee, M. Heo, and J. Kim, "Generation of multiple ultra-stable optical frequency combs from an all-fiber photonic platform," Science Advances 6, eaax4457 (2020).
- J. Wei^, D. Kwon^, S. Zhang, S. Pan, and J. Kim, "All-fiber-photonics-based ultralow-noise agile frequency synthesizer for X-band radars," Photonics Research 6, 12-17 (2018).
- D. Kwon, C. Jeon, J. Shin, M. Heo, S. Park, Y. Song, and J. Kim, "Reference-free, high-resolution measurement method of timing jitter spectra of optical frequency combs," Scientific Reports 7, 40917 (2017).
- D. Kwon and J. Kim, "All-fiber interferometer-based repetition-rate stabilization of mode-locked lasers with 10-14-level instability and 1-fs-level jitter over 1-s," Optics Letters 42, 5186-5189 (2017).
Awards:
Outstanding Doctoral Thesis Award from KAIST ME, Oct 2021.
NRF Global PhD Fellowship, Aug 2018.
Visiting Research: UCLA, Mesoscopic Optics and Quantum Electronics Lab (USA) [Nov 2016]
Univ of Colorado at Boulder, Ultrafast Photonics Lab (USA) [Jun-Aug 2019]
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Dr. Hyunsoo Kwak (곽현수)
Current Position: Senior Engineer at Samsung Electronics Co. Ltd. (Memory Manufacturing Technology Center, Hwaseong, Korea, Mar 2023-)
Master-PhD student @ UPCaM [Mar 2016 - Feb 2023]
Worked on optical dimensional metrology for 3D semiconductor devices
Education:
KAIST, PhD in Mechanical Engineering, Feb 2023.
KAIST, MS in Mechanical Engineering, Feb 2018.
KAIST, BS in Mechanical Engineering, Feb 2016.
Selected Publication:
- H. Kwak and J. Kim, "(Invited Review) Semiconductor multilayer nanometrology with machine learning," Nanomanufacturing and Metrology 6, 15 (2023).
- H. Kwak, Y. Na, C. Ahn, J. Bae, and J. Kim, "785-nm frequency comb-based time-of-flight detection for 3D surface profilometry of silicon devices," IEEE Photonics Journal 14, 3150908 (2022).
- H. Kwak, S. Ryu, S. Cho, J. Kim, Y. Yang, and J. Kim, "Non-destructive thickness characterisation of 3D multilayer semiconductor devices using optical spectral measurements and machine learning," Light: Advanced Manufacturing 2, 9-19 (2021).
Selected Patents:
- "Thickness prediction network learning method, semiconductor device manufacturing method, and semiconductor material deposition equipment" with S. Ryu, S. Cho, Y. Yang, C. Lee and J. Kim, US Patent Application 16/678755.
Awards: Outstanding Paper Award from OSK Optics and Photonics Congress 2019, Jul 2019
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Dr. Yongjin Na (나용진)
Current Position: Senior Engineer at Samsung Electronics Co. Ltd. (Semiconductor R&D Center, Hwaseong, Korea, April 2023-)
Master-PhD student @ UPCaM [Mar 2017 - Feb 2023]
Worked on TOF-based methods for imaging dynamics of mechanical resonators
Education:
KAIST, PhD in Mechanical Engineering, Feb 2023.
KAIST, MS in Mechanical Engineering, Feb 2019.
KAIST, BS in Mechanical Engineering, Feb 2017.
Nanyang Technological Univ (Singapore), Exchange Student [Mar 2015 - Aug 2015]
Selected Publication:
- Y. Na, H. Kwak, C. Ahn, S. Lee, W. Lee, C.-S. Kang, J. Lee, J. Suh, H. Yoo, and J. Kim, "Massively parallel electro-optic sampling of space-encoded optical pulses for ultrafast multi-dimensional imaging," Light: Science & Applications 12, 44 (2023).
- Y. Na, C. Jeon, C. Ahn, M. Hyun, D. Kwon, J. Shin, and J. Kim, "Ultrafast, sub-nanometre-precision and multifunctional time-of-flight detection," Nature Photonics 14, 355-360 (2020).
Selected Patents:
- "Ultrafast camera system and measurement method thereof" with H. Kwak, C. Ahn, and J. Kim, US Patent Application 17/333153.
- "Optical phase detector using electric pulse, and sensing system" with J. Kim,
US Patent Application 16/784401; EU Patent Application 20157356.5
Awards:
- KAIST College of Engineering PhD Dissertation Award, Feb 2023
- Woodeok Foundation Graduate Fellowship, Nov 2020
- Outstanding Master's Graduate Award from KAIST ME Department, Dec 2019
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Dr. Minji Hyun (현민지)
Current Position: Senior Researcher at Agency for Defense Development (ADD, 국방과학연구소, Daejeon, Korea, Oct 2024-)
Master-PhD student [Mar 2018 - Feb 2024]; Postdoctoral Researcher [Mar 2024 - Aug 2024]
Worked on on-chip clocking, data conversion and RF generation with photocurrent pulses
Education:
KAIST, PhD in Mechanical Engineering, Feb 2024.
KAIST, MS in Mechanical Engineering, Feb 2020.
Handong Global Univ, BS in Mechanical and Control Engineering, Feb 2018.
Selected Publication:
- M. Hyun, C. Ahn, Y. Na, H. Chung, and J. Kim, "Attosecond electronic timing with rising edges of photocurrent pulses," Nature Communications 11, 3667 (2020).
- M. Hyun, C. Jeon, and J. Kim, "Ultralow-noise microwave extraction from optical frequency combs using photocurrent pulse shaping with balanced photodetection," Scientific Reports 11, 17809 (2021).
- M. Hyun, H. Chung, W. Na, and J. Kim, "Femtosecond-precision electronic clock distribution in CMOS chips by injecting frequency comb-extracted photocurrent pulses," Nature Communications 14, 2345 (2023).
- M. Hyun, C. Ahn, Y. Bae, J. Cho, and J. Kim, "Femtosecond-resolution optical pulse interleaving time error detector," Optics Letters 48, 6472-6475 (2023).
Selected Patents:
- "System for generating low-jitter digital clock signals using pulsed laser" with Y. Na, H. Chung and J. Kim, US Patent 11,082,032 B2 (issued on Aug 3, 2021)
Awards:
- Outstanding Student Paper Award from OSK-Optica-OSJ Joint Symposia 2023, Aug 2023
- Outstanding Student Paper Award from OSK Photonics Conference 2021, Dec 2021
- Woodeok Foundation Graduate Fellowship, Nov 2021
- Outstanding Master's Graduate Award from KAIST ME Department, Nov 2020
- Selected as Chairs' Pick Paper of CLEO 2019, May 2019
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Masters
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Dr. Suhyeon Park (박수현)
Current Position: Assistant Professor at Korea Aerospace University (March 2022 -)
Senior Engineer at Samsung Electronics [2020-2021]
Post-doc at the University of Central Florida [2018 - 2020]
Researcher at Korea Research Institute of Standards and Science (KRISS) [Aug 2012 - Jul 2014]
Master student @ UPCaM [Sep 2010 - Jul 2012]
Worked on indoor atmospheric optical pulses transfer
Education:
VirginiaTech, PhD in Mechanical and Aerospace Engineering, Feb 2018.
KAIST, MS in Mechanical Engineering, Aug 2012.
Korea Univ, BS in Mechanical Engineering, Aug 2010.
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Dr. Hyoji Kim (김효지)
Current Position: Samsung Electronics
Master student @ UPCaM [Sep 2011 - Aug 2013]
Worked on high-rep-rate Yb-fiber lasers
Education:
KAIST, PhD in Electrical Engineering, 2019.
KAIST, MS in Mechanical Engineering, Aug 2013.
KAIST, Dual BS in Mechanical Engineering and Business Economics, Aug 2011.
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Dr. Jinho Kang (강진호)
Current Position: ETRI
Master student @ UPCaM [Mar 2013 - Dec 2014]
Worked on time-of-flight stabilization of optical pulse trains
Education:
KAIST, PhD in Electrical Engineering, 2021.
KAIST, MS in Mechanical Engineering, Feb 2015.
KAIST, BS in Mechanical Engineering, Feb 2013.
Selected Publication @ UPCaM:
- J. Kang, J. Shin, C. Kim, K. Jung, S. Park, and J. Kim, "Few-femtosecond-resolution characterization and suppression of excess timing jitter and drift in indoor atmospheric frequency comb transfer," Opt. Express 22, 26023-26031 (2014).
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Jaegoan Lee (이재관)
Current Position: Samsung Electronics
Previously with Kohyoung Technology R&D Center
Master student @ UPCaM [Mar 2017 - Dec 2018]
Worked on robust fs lasers for free-space transfer
Education:
KAIST, MS in Mechanical Engineering, Feb 2019.
KAIST, BS in Mechanical Engineering, Feb 2017.
Karlsruhe Inst of Tech (Germany), Exchange Student [Aug 2015 - Feb 2016]
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Myeong-chan Park (박명찬)
Master student @ UPCaM [Sep 2021 - Jun 2023]
Worked on silica micro-combs
Education:
KAIST, MS in Mechanical Engineering, Aug 2023.
Handong Global University, BS in Mechanical Engineering, Aug 2021.
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Post-docs
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Dr. Youjian Song
Current Position: Associate Professor at Tianjin University (Tianjin, China, July 2011-)
BK21 Postdoctoral Researcher @ UPCaM [Feb 2010 - Jun 2011]
Worked on low-noise fiber lasers; noise theory and simulations
Education:
Tianjin University, PhD in Optics Engineering, Jun 2009.
Tianjin University, BS in Electronics Science and Technology, Jun 2004.
Selected Publication with UPCaM:
- J. Kim and Y. Song, "Ultralow-noise mode-locked fiber lasers and frequency combs: principles, status and applications," Advances in Optics and Photonics 8, 465-540 (2016).
- W. Chen, Y. Song, K. Jung, M. Hu, C. Wang, and J. Kim, "Few-femtosecond timing jitter from a picosecond all-polarization-maintaining Yb-fiber laser," Opt. Express 24, 1347-1357 (2016).
- P. Qin, Y. Song, H. Kim, J. Shin, D. Kwon, M. Hu, C. Wang, and J. Kim, "Reduction of timing jitter and intensity noise in normal-dispersion passively mode-locked fiber lasers by narrow bandpass filtering," Opt. Express 22, 28276-28283 (2014).
- Y. Song, C. Kim, K. Jung, H. Kim, and J. Kim, "Timing jitter optimization of mode-locked Yb-fiber lasers toward the attosecond regime," Opt. Express 19, 14518-14525 (2011).
- Y. Song, K. Jung, and J. Kim, "Impact of pulse dynamics on timing jitter in mode-locked fiber lasers," Opt. Lett. 36, 1761-1763 (2011).
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Dr. Dong Hou
Current Position: Assistant Professor at University of Electronic Science and Technology of China (UESTC, Chengdu, China, Feb 2016-)
Visiting Researcher @ UPCaM [Nov 2015 - Jan 2016]
Worked on remote comb transfer and synchronization
Education:
Peking University, PhD in Electronics, Jun 2012.
North China University of Technology, BS in Electronic Engineering, Jul 2004.
Employment:
KAIST (Prof. Kim's group), Visiting Researcher [Nov 2015-Jan 2016]
Univ of Colorado (Prof. Schibli's group), Research Associate [Jul 2014-Oct 2015]
Peking University (Prof. Zhao's group), Postdoctoral Fellow [Jul 2012-Jun 2014]
Leadsec Ltd, Senior Hardware Engineer [Jan 2006-Jul 2007]
E-World Ltd, Hardware Engineer [Apr 2004-Jan 2006]
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Dr. Shuangyou Zhang
Current Position: Assistant Professor at Technical University of Denmark (DTU)
BK21 Postdoctoral Researcher @ UPCaM [Aug 2016 - Aug 2017]
Worked on mode-locked laser-based sensing and digital clock generation
Education: Peking University, PhD in Electronics, Jul 2016.
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Dr. Xiao-Zhou Li
Current Position: Associate Professor at Dalian University of Technology (Dalian, China, April 2019-)
Postdoctoral Researcher @ UPCaM [Oct 2018 - Mar 2019]
Worked on noise in temporal Talbot effect-based systems
Education:
Postdoctoral Research Fellow, INRS-EMT (Montreal, Canada) [Jan 2017 - Sep 2018]
PhD in Electronic Engineering, City University of Hong Kong, Nov 2016.
Selected Publication with UPCaM:
- X.-Z. Li, C. Jeon, S. Pan, and J. Kim, "Low-noise repetition-rate multiplication by injection locking and gain-saturated amplification," IEEE Photon. Tech. Lett. 31, 997-1000 (2019).
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Dr. Ziye Wang
Current Position: Assistant Professor at Jiangsu University of Science and Technology
Postdoctoral Researcher @ UPCaM [Nov 2022 - Nov 2023]
Worked on microcomb- and OEO-based microwave photonics
Education:
Southeast University, PhD in RF and OE-ICs, Sep 2022.
Southeast University, ME in ASIC, Sep 2018.
Southeast University, BS in Physics, Sep 2016.
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Visiting Researchers and Undergraduate Students
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Dr. Yeonjoon Cheong (정연준)
Current Position: Postdoc at Univ of Washington
Undergraduate Researcher @ UPCaM [Mar 2014 - Jun 2015]
Worked on characterization of ultrafast waveguide devices
Education:
Univ of Michigan, PhD in Mechanical Engineering, 2021
KAIST, BS in Mechanical Engineering (Summa Cum Laude), Aug 2015
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Dr. Peng Qin
Current Position: Researcher at Chinese Academy of Space Technology
Visiting student researcher @ UPCaM [Oct 2012 - Jan 2013]
Worked on low-noise Yb-fiber lasers and amplifiers
Education:
Tianjin University, PhD in Optics Engineering, Jul 2016
Tianjin University, BS in Optoelectronic Technology Science, Jul 2011
Selected Publication @ UPCaM:
- P. Qin, Y. Song, H. Kim, J. Shin, D. Kwon, M. Hu, C. Wang, and J. Kim, "Reduction of timing jitter and intensity noise in normal-dispersion passively mode-locked fiber lasers by narrow bandpass filtering," Opt. Express 22, 28276-28283 (2014).
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Dr. Jieun Bae (배지은)
Current Position: Postdoctoral Researcher, CNRS, France
URP Researcher @ UPCaM [Dec 2015 - Jun 2016]
Worked on waveguide device characterization methods
Education:
KAIST, PhD in Physics, Feb 2023.
KAIST, BS in Physics, Feb 2017.
Awards: Best Poster Award from KAIST URP Program Workshop, Aug 2016.
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Dr. Xing Lu
Current Position: Researcher at China Aerospace Science and Industry Co.
Visiting PhD student researcher @ UPCaM [Mar 2017 - Sep 2017]
Worked on FLOM-PD-based TOF measurement technique
Education:
Peking University, PhD in Physics, July 2018.
Selected Publication @ UPCaM:
- X. Lu, S. Zhang, X. Chen, D. Kwon, C. Jeon, Z. Zhang, J. Kim, and K. Shi, "Ultrasensitive, high-dynamic-range and broadband strain sensing by time-of-flight detection with femtosecond-laser frequency combs," Sci. Rep. 7, 13305 (2017).
- X. Lu, S. Zhang, C. Jeon, C. Kang, J. Kim, and K. Shi, "Time-of-flight detection of femtosecond laser pulses for precise measurement of large microelectronic step height," Opt. Lett. 43, 1447-1450 (2018).
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Dr. Juan Wei
Visiting PhD student researcher @ UPCaM (supported by CSC fellowship) [Nov 2016 - Oct 2017]
Worked on low-noise microwave phase detector and photonic microwave generation
Education:
NUAA, PhD in Electronic Engineering, Dec 2018.
NUAA, MS in Electronic Engineering, Apr 2014.
NUAA, BS in Electronic Engineering, Jun 2012.
Selected Publication @ UPCaM:
- J. Wei, D. Kwon, S. Zhang, S. Pan, and J. Kim, "All-fiber-photonics-based ultralow-noise agile frequency synthesizer for X-band radars," Photon. Res. 6, 12-17 (2018).
- J. Wei, S. Zhang, J. Kim, and S. Pan, "Compact phase detector for optical-microwave synchronization using polarization modulation," J. Lightw. Technol. 36, 4267-4272 (2018).
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Suil Cho (조수일)
Visiting Researcher (from Samsung Electronics) [Jun 2017 - May 2018]
Worked on semiconductor metrology and inspection
Employment:
Samsung Electronics Co. Ltd, Memory Manufacturing Operation Center, Feb 2010 - Present
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Chan-Hyeok Kwon (권찬혁)
Undergraduate Researcher [Jun 2022 - Aug 2022]
Worked on simulation of laser-induced temperature changes in silicon
Education: Undergraduate Student in ME at Hong Kong University of Science and Technology
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Seunghyun Oh (오승현)
Undergraduate Researcher [Jun 2022 - Aug 2022]
Worked on the design of a transimpedance amplifier (TIA) photodetector
Education:
Undergraduate Student in EE at Korea University
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Dr. Hui Yang
CSC Scholarship-Supported Visiting Researcher [Nov 2021 - Oct 2022]
Worked on the applications of microcombs for telecommunications
Employment:
Assistant Professor, School of Information Science and Technology, Southwest Jiatong University [Jul 2014 - Present]
Education:
Peking University, PhD in Communication and Information System, Jun 2014.
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Jeewoo Kang (강지우)
Undergraduate Intern (MIT-Korea Program) [Jun 2024 - Aug 2024]
Worked on TOF detection using chirped optical pulses
Education:
Undergraduate Student in EECS at MIT
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