Members

Ultra-Scale Photonic Control and Measurement Group

Alumni

Total 34건 1 페이지

  • 1PhDs

  • Lab. Manager​

    Dr. Kwangyun Jung 정광연

    Worked on low-noise, fs-laser-based rf synchronization and synthesizers

    Position

    Research Professor at Nagoya University (Nagoya, Japan) [Sep 2022-Aug 2023]

    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]

    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

    Visiting Research

    DESY-CFEL and MPQ (Germany)  [Aug 2014]

    Tianjin University and Peking University (China)  [Sep 2015]

  • Lab. Manager​

    Dr. Chur Kim 김철

    Worked on low-noise and robust all-fiber mode-locked lasers based on PLC devices

    Position

    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]

    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]

  • Lab. Manager​

    Dr. Heewon Yang 양희원

    Worked on laser-RF synchronization for KAERI ultrafast electron diffraction (UED) systems

    Position

    Current Position: Senior Engineer at Samsung Electronics Co. Ltd. (Foundry Manufacturing Center, Giheung, Korea, Mar 2018-)

    Master-PhD Student @ UPCaM [Feb 2011 - Dec 2017]

    Selected Publication @ UPCaM

    - 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.

  • Lab. Manager​

    Dr. Dohyun Kim 김도현

    Worked on compact, robust and low-noise femtosecond fiber lasers

    Position

    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]

    Selected Publication @ UPCaM

    - 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]

  • Lab. Manager​

    Dr. Chan-Gi Jeon 전찬기

    Worked on optical-microwave phase detectors and their applications

    Position

    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]

    Selected Publication @ UPCaM

    - 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-fiber 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]

  • Lab. Manager​

    Dr. Junho Shin 신준호

    Worked on laser-electron synchronization for ultrafast science facilities

    Position

    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]

    Selected Publication @ UPCaM

    - 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.

  • Lab. Manager​

    Dr. Dohyeon Kwon 권도현

    Worked on generation of ultra-stable frequency combs from integrated photonic systems

    Position

    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]

    Selected Publication @ UPCaM

    - 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]

  • Lab. Manager​

    Dr. Hyunsoo Kwak 곽현수

    Worked on optical dimensional metrology for 3D semiconductor devices

    Position

    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]

    Selected Publication @ UPCaM

    - 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

  • Lab. Manager​

    Dr. Yongjin Na 나용진

    Worked on TOF-based methods for imaging dynamics of mechanical resonators

    Position

    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]

    Selected Publication @ UPCaM

    - Y. Na, J. Suh, and J. Kim, "Frequency comb-based time-domain tracking of AFM cantilever dynamics from picometre-scale noise to micron-scale nonlinear motion," PhotoniX 6, 36 (2025)

    - 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 Pat

    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

  • Lab. Manager​

    Dr. Minji Hyun 현민지

    Worked on on-chip clocking, data conversion and RF generation with photocurrent pulses

    Position

    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]

    Selected Publication @ UPCaM

    - 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

  • Lab. Manager​

    Dr. Igju Jeon 전익주

    Working on portable fiber-photonic platforms for laser and frequency comb stabilization

    Position

    Current Position: Senior Researcher at Korea Institute of Machinery and Materials (KIMM, 한국기계연구원, Department of Laser and Electron Beam Application, Daejeon, Korea, Aug 2025-)

    Master-PhD student [Sep 2017 - Feb 2025]; Postdoctoral Researcher [Mar 2025 - Jul 2025]

    Selected Publication @ UPCaM

    - I. Jeon, C. Ahn, C. Kim, S. Park, W. Jeon, and J. Kim, "Palm-sized, vibration-insensitive and vacuum-free all-fiber-photonic module for 10-14-level stabilization of CW lasers and frequency combs," APL Photonics 8, 120804 (2023) -- Selected as the Featured Article of APL Photonics

    - I. Jeon, W. Jeong, C. Ahn, and J. Kim, "10-15-level laser stabilization down to fiber thermal noise limit using self-homodyne detection," Optics Letters 50, 1057-1060 (2025)

    Awards

    Outstanding Paper Award from OSK Optics and Photonics Congress 2021, Jul 2021

    Visiting Research

    Nokia-Bell Labs (USA)  [Oct 2024]

  • 2Masters

  • Lab. Manager​

    Dr. Suhyeon Park 박수현

    Worked on indoor atmospheric optical pulses transfer

    Position

    Master student @ UPCaM    [Sep 2010 - Jul 2012]

  • Lab. Manager​

    Dr. Hyoji Kim 김효지

    Worked on high-rep-rate Yb-fiber lasers

    Position

    Master student @ UPCaM   [Sep 2011 - Aug 2013]

  • Lab. Manager​

    Jiseok Lim 임지석

    Worked on fiber link installation for PAL-XFEL timing

    Position

    Master student @ UPCaM  [Feb 2012 - Jun 2014]

  • Lab. Manager​

    Sangho Bae 배상호

    Worked on waveguide chip alignment and test set-up

    Position

    Master student @ UPCaM   [Mar 2013 - Dec 2014]

  • Lab. Manager​

    Dr. Jinho Kang 강진호

    Worked on time-of-flight stabilization of optical pulse trains

    Position

    Master student @ UPCaM   [Mar 2013 - Dec 2014]

    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).

  • Lab. Manager​

    Jaegoan Lee 이재관

    Worked on robust fs lasers for free-space transfer

    Position

    Master student @ UPCaM   [Mar 2017 - Dec 2018]

  • Lab. Manager​

    Myeong-chan Park 박명찬

    Worked on silica micro-combs

    Position

    Master student @ UPCaM [Sep 2021 - Jun 2023]

  • Lab. Manager​

    Woosong Jeong 정우송

    Working on laser stabilization and photonic phase calibration for radio telescopes

    Position

    Master student [Mar 2024 - Feb 2026]

  • 3Post-docs

  • Lab. Manager​

    Dr. Youjian Song -

    Worked on low-noise fiber lasers; noise theory and simulations

    Position

    Current Position: Professor at Tianjin University (Tianjin, China)

    BK21 Postdoctoral Researcher @ UPCaM  [Feb 2010 - Jun 2011]

    Selected Publication @ 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).

  • Lab. Manager​

    Dr. Dong Hou -

    Worked on remote comb transfer and synchronization

    Position

    Current Position: Associate Professor at University of Electronic Science and Technology of China (UESTC, Chengdu, China)

    Visiting Researcher @ UPCaM  [Nov 2015 - Jan 2016]

    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]

  • Lab. Manager​

    Dr. Shuangyou Zhang -

    Worked on mode-locked laser-based sensing and digital clock generation

    Position

    Current Position: Assistant Professor at Technical University of Denmark (DTU, Lyngby, Denmark)

    BK21 Postdoctoral Researcher @ UPCaM [Aug 2016 - Aug 2017]

  • Lab. Manager​

    Dr. Xiao-Zhou Li -

    Worked on noise in temporal Talbot effect-based systems

    Position

    Current Position: Associate Professor at Dalian University of Technology (Dalian, China)

    Postdoctoral Researcher @ UPCaM [Oct 2018 - Mar 2019]

    Selected Publication @ 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).

  • Lab. Manager​

    Dr. Ziye Wang -

    Worked on microcomb- and OEO-based microwave photonics

    Position

    Current Position: Assistant Professor at Jiangsu University of Science and Technology

    Postdoctoral Researcher @ UPCaM  [Nov 2022 - Nov 2023]

    Selected Publication @ UPCaM

    - Z. Wang, I. Jeon, C. Ahn, and J. Kim , "Narrow linewidth, arbitrarily tuning DFB laser using 3x3 optical coupler-based fully digital feedback," IEEE/Optica J. Lightw. Tech. 42, 3820-3825 (2024).

  • 4Visiting Researchers and Undergraduate Students

  • Lab. Manager​

    Dr. Yeonjoon Cheong 정연준

    Worked on characterization of ultrafast waveguide devices

    Position

    Undergraduate Researcher @ UPCaM    [Mar 2014 - Jun 2015]

  • Lab. Manager​

    Dr. Peng Qin -

    Worked on low-noise Yb-fiber lasers and amplifiers

    Position

    Visiting student researcher @ UPCaM  [Oct 2012 - Jan 2013]

    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).

  • Lab. Manager​

    Dr. Jieun Bae 배지은

    Worked on waveguide device characterization methods

    Position

    URP Researcher @ UPCaM [Dec 2015 - Jun 2016]

    Awards

    Best Poster Award from KAIST URP Program Workshop, Aug 2016.

  • Lab. Manager​

    Dr. Xing Lu -

    Worked on FLOM-PD-based TOF measurement technique

    Position

    Visiting PhD student researcher @ UPCaM  [Mar 2017 - Sep 2017]

    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).

  • Lab. Manager​

    Dr. Juan Wei -

    Worked on low-noise microwave phase detector and photonic microwave generation

    Position

    Visiting PhD student researcher @ UPCaM (supported by CSC fellowship)   [Nov 2016 - Oct 2017]

    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).

  • Lab. Manager​

    Suil Cho 조수일

    Worked on semiconductor metrology and inspection

    Position

    Visiting Researcher (from Samsung Electronics)   [Jun 2017 - May 2018]

    Employment

    Samsung Electronics Co. Ltd, Memory Manufacturing Operation Center, Feb 2010 - Present

  • Lab. Manager​

    Chan-Hyeok Kwon 권찬혁

    Worked on simulation of laser-induced temperature changes in silicon

    Position

    Undergraduate Researcher    [Jun 2022 - Aug 2022]

  • Lab. Manager​

    Dr. Hui Yang -

    Worked on the applications of microcombs for telecommunications

    Position

    CSC Scholarship-Supported Visiting Researcher [Nov 2021 - Oct 2022]

    Employment

    Assistant Professor, School of Information Science and Technology, Southwest Jiatong University [Jul 2014 - Present]

  • Lab. Manager​

    Seunghyun Oh 오승현

    Worked on the design of a transimpedance amplifier (TIA) photodetector

    Position

    Undergraduate Researcher    [Jun 2022 - Aug 2022]

  • Lab. Manager​

    Jeewoo Kang 강지우

    Worked on TOF detection using chirped optical pulses

    Position

    Undergraduate Intern (MIT-Korea Program)    [Jun 2024 - Aug 2024]