Publication
Ultra-Scale Photonic Control and Measurement Group
[* = (co-)corresponding author(s); ^ = co-first authors; IF = JCR impact factor; TC = times cited in Google Scholar as of Mar 24, 2025]
Single-shot reflectometric monitoring of silicon melting in nanosecond laser annealing
J. Bae, M. Hyun, J. Hong, K. Ko, Y. Jeon, Y. Park, and J. Kim* Submitted on August 14, 2026 (2026)
Near-pump-level relative intensity noise of dispersive waves in on-chip supercontinuum generation
S. Park, I. Jeon, M. Kim, C. Lee, K. Ko, D. Suk, J. Kim, H. Lee* Submitted on August 6, 2026; opticaopen.33174038 (2026)
Atomic-referenced Hz-linewidth lasers via fiber interferometric stabilization
C. Ahn^, H. Jeong^, S. Yang, J. Choi, I. Jeon, H. Moon*, J. Kim* Submitted on July 29, 2026; arXiv:2605.26427 (2026)
Self-stabilization of microcombs
K. Twayana, F. Lei, J. Choi, J. Kim, V. Torres-Company* Submitted on July 22, 2026; arXiv:2607.19614 (2026)
Silicon photonic MEMS platform-based air-coupled optomechanical ultrasound receiver at 2.8 MHz with an ultra-compact active acoustic sensing area
S. Nam^, J. H. Kim^, Y. J. Park, D. Choi, D. U. Kim, N. Guezzi, S. Lee, Y. Seo, S. Choi, M. Kim, H. Seong, C. Lee, C. Ahn, J. Kim*, J. Yu*, S. Han* Photonics Research 14, 3802-3817 (2026)
Optical-to-microcomb stability transfer for ultrastable timing and microwave/milimeter-wave generation
C. Ahn, J. Choi, D. Suk, H. Lee, and J. Kim* Laser & Photonics Reviews 20, e71135 (2026)
Preserving ultralow timing jitter in microcombs with repetition-rate multiplication via perfect soliton crystal formation
C. Ahn, J. Choi, D. Suk, M. Kim, H. Lee, and J. Kim* Optica 13, 717 (2026)
Optical frequency comb integration in radio telescopes: advancing signal generation and phase calibration
M. Hyun^, C. Ahn^, J. Choi, J. Baek, W. Jeong, D. Je, D. Byun, J. Wagner, M. Heo, T. Jung, and J. Kim* Light: Science & Applications 15, 53 (2026)
Frequency comb-based time-domain tracking of AFM cantilever dynamics from picometre-scale noise to micron-scale nonlinear motion
Y. Na, J. Suh, and J. Kim* PhotoniX 6, 36 (2025)
Backside illumination-enabled metrology and inspection inside 3D-ICs using frequency comb-based chromatic confocal and spectral interferometry
H. Choi, H. Kwak, S. Ryu, Y. Sohn, and J. Kim* Light: Advanced Manufacturing 6, 74 (2025)
FPGA-driven soliton locking for reduced manual intervention in microcombs
Z. Wang*^, J. Baek^, C. Ahn, D. Suk, H. Lee, and J. Kim* Journal of Lightwave Technology 43, 9270-9275 (2025)
(Invited Review) Optical frequency combs and their applications in timing and synchronization
J. Kim* Korean Journal of Optics and Photonics 36, 1-11 (2025)
10^-15-level laser stabilization down to fiber thermal noise limit using self-homodyne detection
I. Jeon, W. Jeong, C. Ahn and J. Kim* Optics Letters 50, 1057-1060 (2025)
Guest editorial for the special issue on microwave photonics
S. Pan, J. McKinney, A. Bogoni, and J. Kim Journal of Lightwave Technology 42, 7431-7433 (2024)
Characterization of noise spectra in low-jitter GHz mode-locked fs-laser-inscribed waveguide lasers
J. Bae, M. Hyun, D. Kim, X. Mateos, J. G. Ajates, C. Romero, J. R. V. De Aldana, J. Kim*, and F. Rotermund* Optics and Laser Technology 179, 111412 (2024)
Narrow linewidth, arbitrarily tuning DFB laser using 3x3 optical coupler-based fully digital feedback
Z. Wang*, I. Jeon, C. Ahn, and J. Kim* Journal of Lightwave Technology 42, 3820-3825 (2024)
Palm-sized, vibration-insensitive and vacuum-free all-fiber-photonic module for 10-14-level stabilization of CW lasers and frequency combs
I. Jeon, C. Ahn. C. Kim, S. Park, W. Jeon, L. Duan, and J. Kim* APL Photonics 8, 120804 (2023)
Femtosecond-resolution optical pulse interleaving time error detector
M. Hyun, C. Ahn, Y. Bae, J. Cho, and J. Kim* Optics Letters 48, 6472-6475 (2023)
Synchronization of a silica microcomb to a mode-locked laser with a fractional optoelectronic phase-locked loop
H. Yang^, C. Ahn^, I. Jeon, D. Suk, H. Lee, and J. Kim* Current Optics and Photonics 7, 557-561 (2023)
(Invited Review) Semiconductor multilayer nano-metrology with machine learning
H. Kwak and J. Kim* Nanomanufacturing and Metrology 6, 15 (2023)
Femtosecond-precision electronic clock distribution in CMOS chips by injecting frequency comb-extracted photocurrent pulses
M. Hyun^, H. Chung^*, W. Na, and J. Kim* Nature Communications 14, 2345 (2023)
Massively parallel electro-optic sampling of space-encoded optical pulses for ultrafast multi-dimensional imaging
Y. Na, H. Kwak, C. Ahn, S. Lee, W. Lee, C.-S. Kang, J. Lee, J. Suh, H. Yoo, and J. Kim* Light: Science & Applications 12, 44 (2023)
Dynamic absolute distance measurement with nanometer-precision and MHz acquisition rate using a frequency comb-based combined method
C. Ahn, Y. Na, and J. Kim* Optics and Lasers in Engineering 162, 107414 (2023)
785-nm frequency comb-based time-of-flight detection for 3D surface profilometry of silicon devices
H. Kwak, Y. Na, C. Ahn, J. Bae, and J. Kim* IEEE Photonics Journal 14, 3150908 (2022)
(Perspective) Chip-scale power booster for light
J. Kim* Science 376, 1269 (2022)
Ultrastable microwave and soliton-pulse generation from fibre-photonic-stabilized microcombs
D. Kwon^, D. Jeong^, I. Jeon, H. Lee*, and J. Kim* Nature Communications 13, 381 (2022)
Synchronization of an optical frequency comb and a microwave oscillator with 53 zs/Hz1/2 resolution and 10^-20-level stability
C. Ahn, Y. Na, M. Hyun, J. Bae, and J. Kim* Photonics Research 10, 365-372 (2022)
Ultralow-noise microwave extraction from optical frequency combs using photocurrent pulse shaping with balanced photodetection
M. Hyun, C. Jeon, and J. Kim Scientific Reports 11, 17809 (2021)
Self-stabilized soliton generation in a microresonator through mode-pulled Brillouin lasing
I. Do, D. Kim, D. Jeong, D. Suk, D. Kwon, J. Kim, J. Lee*, and H. Lee* Optics Letters 46, 1772-1775 (2021)
A 360-fs-time-resolution 7-bit stochastic time-to-digital converter with linearity calibration using dual time offset arbiters in 65-nm CMOS
H. Chung*, M. Hyun, J. Kim IEEE Journal of Solid-State Circuits 56, 940-949 (2021)
Sub-10-fs timing for ultrafast electron diffraction with THz-driven streak camera
J. Shin, H. Kim, S. Park, H. Bark, I. Baek, K. Oang, K. Jang, K. Lee, F. Rotermund, Y. Jeong*, and J. Kim* Laser and Photonics Reviews 15, 2000326 (2021)
Non-destructive thickness characterisation of 3D multilayer semiconductor devices using optical spectral measurements and machine learning
H. Kwak, S. Ryu, S. Cho, J. Kim, Y. Yang, and J. Kim* Light: Advanced Manufacturing 2, 9-19 (2021)
Photonic flywheel in a monolithic fiber resonator
K. Jia, X. Wang, D. Kwon, J. Wang, E. Tsao, H. Liu, X. Ni, J. Guo, M. Yang, X. Jiang, J. Kim, S. Zhu, Z. Xie*, S. Huang* Physical Review Letters 125, 143902 (2020)
Ultralow-jitter silica microcomb
D. Jeong^, D. Kwon^, I. Jeon, I. H. Do, J. Kim*, and H. Lee* Optica 7, 1108-1111 (2020)
Bidirectional mode-locked all-normal dispersion fiber laser
B. Li*, J. Xing, D. Kwon, Y. Xie, N. Prakash, J. Kim, and S. Huang* Optica 7, 961-964 (2020)
Attosecond electronic timing with rising edges of photocurrent pulses
M. Hyun, C. Ahn, Y. Na, H. Chung*, and J. Kim* Nature Communications 11, 3667 (2020)
Ultrafast, sub-nanometre-precision and multifunctional time-of-flight detection
Y. Na, C. Jeon, C. Ahn, M. Hyun, D. Kwon, J. Shin, and J. Kim* Nature Photonics 14, 355-360 (2020)
Femtosecond synchronization of multiple mode-locked lasers and a microwave oscillator by multi-color electro-optic sampling
D. Kwon, C. Jeon, D. Kim, I. Jeon, and J. Kim* Optics Letters 45, 3155-3158 (2020)
Generation of multiple ultra-stable optical frequency combs from an all-fiber photonic platform
D. Kwon, I. Jeon, W. Lee, M. Heo, and J. Kim* Science Advances 6, eaax4457 (2020)
Optical frequency comb noise spectra analysis using asymmetric fiber delay line interferometer
H. Tian, W. Yang, D. Kwon, R. Li, Y. Zhao, J. Kim, Y. Song*, M. Hu Optics Express 28, 9232-9243 (2020)
Towards jitter-free ultrafast electron diffraction technology
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* Nature Photonics 14, 245-249 (2020)
Graphene-based saturable absorber and mode-locked laser behaviors under gamma-ray radiation
D. Kim^, N. Park^, H. Lee, J. Lee, D. Yeom*, and J. Kim* Photonics Research 7, 742-747 (2019)
Low-noise repetition-rate multiplication by injection locking and gain-saturated amplification
X. Li, C. Jeon, S. Pan, and J. Kim* IEEE Photonics Technology Letters 31, 997-1000 (2019)
Polarization-maintaining nonlinear-amplifying-loop-mirror mode-locked fiber laser based on a 3x3 coupler
D. Kim, D. Kwon, B. Lee, and J. Kim* Optics Letters 44, 1068-1071 (2019)
Highly tunable repetition-rate multiplication of mode-locked lasers using all-fibre harmonic injection locking
C. Jeon, S. Zhang, J. Shin, and J. Kim* Scientific Reports 8, 13875 (2018)
Compact phase detector for optical-microwave synchronization using polarization modulation
J. Wei, S. Zhang, J. Kim*, and S. Pan* Journal of Lightwave Technology 36, 4267-4272 (2018)
Simple-structured, subfemtosecond-resolution optical-microwave phase detector
C. Jeon, Y. Na, B. Lee, and J. Kim* Optics Letters 43, 3997-4000 (2018)
Time-of-flight detection of femtosecond laser pulses for precise measurement of large microelectronic step height
X. Lu, S. Zhang, C. Jeon, C. Kang, J. Kim*, and K. Shi* Optics Letters 43, 1447-1450 (2018)
All-fiber-photonics-based ultralow-noise agile frequency synthesizer for X-band radars
J. Wei^, D. Kwon^, S. Zhang, S. Pan*, and J. Kim* Photonics Research 6, 12-17 (2018)
All-fiber interferometer-based repetition-rate stabilization of mode-locked lasers to 10^-14-level frequency instability and 1-fs-level jitter over 1-s
D. Kwon and J. Kim* Optics Letters 42, 5186-5189 (2017)
Ultrasensitive, high-dynamic-range and broadband strain sensing by time-of-flight detection with femtosecond-laser frequency combs
X. Lu^, S. Zhang^, X. Chen, D. Kwon, C. Jeon, Z. Zhang, J. Kim*, and K. Shi* Scientific Reports 7, 13305 (2017)
Intensity noise suppression in mode-locked fiber lasers by double optical bandpass filtering
D. Kim, S. Zhang, D. Kwon, R. Liao, Y. Cui, Z. Zhang, Y. Song, and J. Kim* Optics Letters 42, 4095-4098 (2017)
(Editorial) Introduction to the issue on reports from the invited and postdeadline speakers of CLEO 2016
S. Preble, S. Alam, G. Coppola, T. Her, J. Kim, H, Lee, K. Tsia IEEE Journal of Selected Topics in Quantum Electronics 23, 0200303 (2017)
Robust, low-noise, polarization-maintaining mode-locked Er-fiber laser with a planar lightwave circuit (PLC) device as a multi-functional element
C. Kim, D. Kwon, D. Kim, S. Choi, S. Cha, K. Choi, D. Yeom, F. Rotermund, and J. Kim* Optics Letters 42, 1472-1475 (2017)
Reference-free, high-resolution measurement method of timing jitter spectra of optical frequency combs
D. Kwon, C. Jeon, J. Shin, M. Heo, S. Park, Y. Song, and J. Kim* Scientific Reports 7, 40917 (2017)
10-fs-level synchronization of photocathode laser with RF-oscillator for ultrafast electron and X-ray sources
H. Yang, B. Han, J. Shin, D. Hou, H. Chung, I. Baek, Y. Jeong, and J. Kim* Scientific Reports 7, 39966 (2017)
Ultralow-noise mode-locked fiber lasers and frequency combs: principles, status, and applications
J. Kim* and Y. Song Advances in Optics and Photonics 8, 465-540 (2016)
(Invited) Femtosecond laser-based microwave signal generation and distribution
J. Kim*, K. Jung, J. Shin, C. Jeon, D. Kwon Journal of Lightwave Technology 34, 4631-4638 (2016)
Few-femtosecond timing jitter from a picosecond all-polarization-maintaining Yb-fiber laser
W. Chen, Y. Song*, K. Jung, M. Hu, C. Wang, and J. Kim* Optics Express 24, 1347-1357 (2016)
All-fibre photonic signal generator for attosecond timing and ultralow-noise microwave
K. Jung and J. Kim* Scientific Reports 5, 16250 (2015)
5-fs laser-electron synchronization for pump-probe crystallography and diffraction
M. Walbran, A. Gliserin, K. Jung, J. Kim*, and P. Baum* Physical Review Applied 4, 044013 (2015)
300-MHz-repetition-rate, all-fiber, femtosecond laser mode-locked by planar lightwave circuit-based saturable absorber
C. Kim, D. Kim, Y. Cheong, D. Kwon, S. Choi, H. Jeong, S. Cha, J. Lee, D. Yeom, F. Rotermund, and J. Kim* Optics Express 23, 26234-26242 (2015)
Characterization and analysis of timing jitter in normal-dispersion Er-fiber lasers with intra-cavity filtering
J. Shin, K. Jung, Y. Song, and J. Kim* Optics Express 23, 22898-22906 (2015)
Characterization of timing jitter spectra in free-running mode-locked lasers with 340 dB dynamic range over 10 decades of Fourier frequency
K. Jung and J. Kim* Optics Letters 40, 316-319 (2015)
Reduction of timing jitter and intensity noise in normal-dispersion passively mode-locked fiber lasers by narrow bandpass filtering
P. Qin, Y. Song*, H. Kim, J. Shin, D. Kwon, M. Hu, C. Wang, and J. Kim* Optics Express 22, 28276-28283 (2014)
Few-femtosecond-resolution characterization and suppression of excess timing jitter and drift in indoor atmospheric frequency comb transfer
J. Kang, J. Shin, C. Kim, K. Jung, S. Park, and J. Kim* Optics Express 22, 26023-26031 (2014)
Remote laser-microwave synchronization over kilometer-scale fiber link with few-femtosecond drift
K. Jung, J. Lim, J. Shin, H. Yang, L. Chen, F. X. Kaertner, H. Kang, C. Min*, and J. Kim* Journal of Lightwave Technology 32, 3742-3748 (2014)
Frequency comb-based microwave transfer over fiber with 7x10-19 instability using fiber-loop optical-microwave phase detectors
K. Jung, J. Shin, J. Kang, S. Hunziker, C. Min, and J. Kim* Optics Letters 39, 1577-1580 (2014)
Sub-20-attosecond timing jitter mode-locked fiber lasers
H. Kim, P. Qin, Y. Song, H. Yang, J. Shin, C. Kim, K. Jung, C. Wang, and J. Kim* IEEE Journal of Selected Topics in Quantum Electronics 20, 901108 (2014)
Gigahertz repetition rate, sub-femtosecond timing jitter optical pulse train directly generated from a mode-locked Yb:KYW laser
H. Yang, H. Kim, J. Shin, C. Kim, S. Choi, G. Kim, F. Rotermund, and J. Kim* Optics Letters 39, 56-59 (2014)
Sub-femtosecond timing jitter, all-fiber, CNT-mode-locked Er-laser at telecom wavelength
C. Kim, S. Bae, K. Kieu, and J. Kim* Optics Express 21, 26533-26541 (2013)
Ultralow phase noise microwave generation from mode-locked Er-fiber lasers with subfemtosecond integrated timing jitter
K. Jung, J. Shin, and J. Kim* IEEE Photonics Journal 5, 5500906 (2013)
Low timing jitter and intensity noise from a soliton Er-fiber laser mode-locked by a fiber taper carbon nanotube saturable absorber
C. Kim, K. Jung, K. Kieu, and J. Kim* Optics Express 20, 29524-29530 (2012)
1.2-GHz repetition rate, diode-pumped Yb:KYW laser mode-locked by a carbon nanotube saturable absorber mirro
H. Yang, C. Kim, S. Y. Choi, G.-H. Kim, Y. Kobayashi, F. Rotermund, and J. Kim* Optics Express 20, 29518-29523 (2012)
Subfemtosecond synchronization of microwave oscillators with mode-locked Er-fiber lasers
K. Jung and J. Kim* Optics Letters 37, 2958-2960 (2012)
Degradation of optical properties of film-type single-wall carbon nanotubes saturable absorbers
S. Y. Ryu, K. S. Kim, J. Kim, and S. Kim* Optics Express 20, 12966-12974 (2012)
Sub-100-as timing jitter optical pulse trains from mode-locked Er-fiber lasers
T. K. Kim, Y. Song, K. Jung, C. Kim, H. Kim, C. H. Nam, and J. Kim* Optics Letters 36, 4443-4445 (2011)
Timing jitter optimization of mode-locked Yb-fiber lasers toward the attosecond regime
Y. Song, C. Kim, K. Jung, H. Kim, and J. Kim* Optics Express 19, 14518-14525 (2011)
Impact of pulse dynamics on timing jitter in mode-locked fiber lasers
Y. Song, K. Jung, and J. Kim* Optics Letters 36, 1761-1763 (2011)
Complete characterization of quantum-limited timing jitter in passively mode-locked fiber lasers
J. A. Cox*, A. Nejadmalayeri, J. Kim, and F. X. Kärtner Optics Letters 35, 3522-3524 (2010)
Microwave signal extraction from mode-locked lasers with attosecond relative timing drift
J. Kim*, and F. X. Kärtner Laser and Photonics Reviews 4, 2022-2024 (2010)
(Invited) Attosecond-precision ultrafast photonics
J. Kim* and F. X. Kärtner Laser and Photonics Reviews 4, 432-456 (2010)
Drift-free femtosecond timing synchronization of remote optical and microwave sources
J. Kim*, J. A. Cox, J. Chen, and F. X. Kärtner* Nature Photonics 2, 733-736 (2008)
Photonic subsampling analog-to-digital conversion of microwave signals at 40-GHz with higher than 7-ENOB resolution
J. Kim*, M. J. Park, M. H. Perrott, and F. X. Kärtner Optics Express 16, 6509-16515 (2008)
Controlled waveforms on the single-cycle scale from a femtosecond oscillator
S. Rausch*, T. Binhammer, A. Harth, J. Kim, R. Ell, F. X. Kärtner, and U. Morgner Optics Express 16, 9739-9745 (2008)
Photonic analog-to-digital conversion with femtosecond lasers
F. X. Kärtner*, J. Kim, J. Chen, A. Khilo Frequenz 62, 71-174 (2008)
Attosecond-resolution timing jitter characterization of free-running mode-locked lasers
J. Kim*, J. Chen, J. Cox, and F. X. Kärtner Optics Letters 32, (2007)
Long-term stable microwave signal extraction from mode-locked lasers
J. Kim*, F. Ludwig, M. Felber, and F. X. Kärtner Optics Expres 15, 8951-8959 (2007)
Long-term femtosecond timing link stabilization using a single-crystal balanced cross-correlator
J. Kim*, J. Chen, Z. Zhang, F. N. C. Wong, F. X. Kärtner, F. Loehl, H. Schlarb Optics Letters 32, 1044-1046 (2007)
Balanced optical-microwave phase detectors for optoelectronic phase-locked loops
J. Kim*, F. X. Kärtner, F. Ludwig Optics Letters 31, 3659-3661 (2006)
Self-referenced 200 MHz octave-spanning Ti:sapphire laser with 50 attosecond carrier-envelope phase jitter
O. D. Mucke*, R. Ell, A. Winter, J. Kim, J. R. Birge, L. Matos, and F. X. Kärtner Optics Express 13, 5163-5169 (2005)
Ultrabroadband beam splitter with matched group delay dispersion
J. Kim*, J. R. Birge, V. Sharma, J. G. Fujimoto, F. X. Kärtner, V. Scheuer, G. Angelow Optics Letters 30, 1569-1571 (2005)
Femtosecond synchronization of radio frequency signals with optical pulse trains
J. Kim*, F. X. Kärtner, and M. H. Perrott Optics Letter 29, 2076-2078 (2004)
Direct frequency comb generation from an octave-spanning, prismless Ti:sapphire laser
L. Matos*, D. Kleppner, O. Kuzucu, T. R. Schibli, J. Kim, E. P. Ippen, and F. X. Kärtner Optics Letters 29, 1683-1685 (2004)
(Invited) Toward Single-Cycle Laser Systems
T. R. Schibli*, O. Kuzucu, J. Kim, E. P. Ippen, J. G. Fujimoto, F. X. Kärtner, V. Scheuer, G. Angelow IEEE Journal of Selected Topics in Quantum Electronics 9, 990-1001 (2003)
Attosecond active synchronization of passively mode-locked lasers using balanced cross correlation
T. R. Schibli*, J. Kim, O. Kuzucu, J. Gopinath, S. N. Tandon, G. S. Petrich, L. A. Kolodziejski, J. G. Fujimoto, E. P. Ippen, and F. X. Kärtner Optics Letters 28, 947-949 (2003)
