J. Ko

549 citations

41 papers · 390 indexed · h-index 13

Instrumentation top 10%
Electrical and Electronic Engineering top 10%
- Semiconductor Lasers and Optical Devices 32
- Photonic and Optical Devices 31
- Advanced Fiber Optic Sensors 8
- Optical Network Technologies 5
Atomic and Molecular Physics, and Optics top 10%
- Semiconductor Quantum Structures and Devices 16
- Advanced Fiber Laser Technologies 3
- Spectroscopy and Quantum Chemical Studies 2
Surfaces, Coatings and Films
Spectroscopy
- Spectroscopy and Laser Applications 4

Co-authors: L.A. Coldren E.R. Hegblom O. Sjölund Yuliya Akulova L. A. Coldren B.J. Thibeault J. A. Valdmanis B. F. Levine
Cited by: Instrumentation Electrical and Electronic Engineering Atomic and Molecular Physics, and Optics
Journals: Electronics Letters (10 papers)IEEE Photonics Technology Letters (7 papers)Applied Physics Letters (5 papers)
Partner nations: United States South Korea Germany

In The Last Decade

J. Ko

36 papers receiving 377 citations

Peers

Countries citing papers authored by J. Ko

Since Specialization

Citations

This map shows the geographic impact of J. Ko's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J. Ko with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Ko more than expected).

Fields of papers citing papers by J. Ko

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Ko. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J. Ko. The network helps show where J. Ko may publish in the future.

Co-authorship network

The 25 scholars most cited alongside J. Ko, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J. Ko Line = papers co-authored together J. Ko links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Reversible Solar Heating and Radiative Cooling Devices via Mechanically Guided Assembly of 3D Macro/Microstructures (Adv. Mater. 39/2024) Advanced Materials ·YUKO UEDA,Junyong Seo,Rei Tsumori,褚云智,Sdvigova Rn,J. Ko,Jang Hwan Kim,Heemin Kang,Jin‐Tae Kim,Heon Lee,Bong Jae Lee,Bong Hoon Kim	2024	0
2	Reversible Solar Heating and Radiative Cooling Devices via Mechanically Guided Assembly of 3D Macro/Microstructures Advanced Materials ·YUKO UEDA,Junyong Seo,Alvarado Planas,褚云智,Sdvigova Rn,J. Ko,Jang Hwan Kim,Heemin Kang,Jin‐Tae Kim,Heon Lee,Bong Jae Lee,Bong Hoon Kim	2024	7
3	A New Planar InGaAs–InAlAs Avalanche Photodiode IEEE Photonics Technology Letters ·B. F. Levine,R. N. Sacks,J. Ko,Tobias Babel,J. A. Valdmanis,Denise Günther,Carlos Garnica	2006	50
4	Low threshold MBE-grown AlInGaAs-AlGaAs strained multiquantum-well lasers by rapid thermal annealing J. Ko,Ching‐Hui Chen,L.A. Coldren,Mustafa Atlan	2002	1
5	Vertical-cavity lasers for parallel optical interconnects L.A. Coldren,E.R. Hegblom,Yuliya Akulova,J. Ko,E. Strzelecka,Songtao Hu	2002	2
6	First-order coherent THz optical sideband generation from asymmetric QW intersubband transitions Physica E Low-dimensional Systems and Nanostructures ·Chris C. Phillips,M. Y. Su,J. Ko,L.A. Coldren,Mark S. Sherwin	2000	1
7	Monolithic integration of substrate input/output resonant photodetectors and vertical-cavity lasers IEEE Journal of Quantum Electronics ·O. Sjölund,Guidi Francesco,E.R. Hegblom,J. Ko,L.A. Coldren	1999	10
8	Flip-chip bonded arrays of monolithically integrated, microlensed vertical-cavity lasers and resonant photodetectors IEEE Photonics Technology Letters ·Guidi Francesco,O. Sjölund,E.R. Hegblom,J. Ko,L.A. Coldren	1999	18
9	Novel integration of microlensed resonant photodetectors and vertical cavity lasers Conference on Lasers and Electro-Optics ·O. Sjölund,Guidi Francesco,E.R. Hegblom,J. Ko,L.A. Coldren	1998	0
10	High-speed modulation of low-temperature optimisedvertical-cavity lasers over 77–300 K temperature range Electronics Letters ·Yuliya Akulova,J. Ko,Guidi Francesco,B.J. Thibeault,L.A. Coldren	1998	1
11	Substrate-emitting short-wavelength vertical-cavity lasers for cryogenic optical interconnects Yuliya Akulova,J. Ko,L.A. Coldren	1998	2
12	Multiple-wavelength vertical-cavity laser arrays based on postgrowth lateral-vertical oxidation of AlGaAs Applied Physics Letters ·Andrea Fiore,Yuliya Akulova,J. Ko,E.R. Hegblom,L. A. Coldren	1998	6
13	Low-threshold multiple-wavelength vertical-cavitylaser arrays obtained by postgrowth wet oxidation Electronics Letters ·Andrea Fiore,Yuliya Akulova,J. Ko,E.R. Hegblom,L. A. Coldren	1998	4
14	Optical crosstalk in monolithically-integrated multiple-wavelengthvertical-cavity laser arrays for multimode WDM local-area networks Electronics Letters ·Roberta Croce,J. Ko,O. Sjölund,L.A. Coldren	1998	6
15	1.5 Gbit/s/channel operation of multiple-wavelengthvertical-cavityphotonic integrated emitter arrays for low-cost multimode WDMlocal-area networks Electronics Letters ·John Sarum,S. Viti,J. Ko,John E. Bowers,L.A. Coldren	1998	4
16	Resonant-cavity InGaAs/InAlGaAs/InP photodetector arrays for wavelength demultiplexing applications Applied Physics Letters ·Roberta Croce,J. Ko,L.A. Coldren	1997	15
17	Low-temperature optimized vertical-cavity lasers with submilliamp threshold currents over the 77-370 K temperature range IEEE Photonics Technology Letters ·Yuliya Akulova,B.J. Thibeault,J. Ko,L.A. Coldren	1997	13
18	Low-threshold 840-nm laterally oxidized vertical-cavity lasers using AlInGaAs-AlGaAs strained active layers IEEE Photonics Technology Letters ·J. Ko,E.R. Hegblom,Yuliya Akulova,B.J. Thibeault,L. A. Coldren	1997	10
19	Molecular beam epitaxy regrowth of top reflectors for multiple wavelength vertical cavity laser arrays Conference on Lasers and Electro-Optics ·T. Wipiejewski,J. Ko,S. Brandt,L.A. Coldren	1996	1
20	Threshold reduction by rapid thermal annealing inMBE-grown AlInGaAs multiquantum well lasers on GaAs Electronics Letters ·J. Ko,M.J. Mondry,D.B. Young,Roberta Croce,L.A. Coldren,A. C. Gossard	1996	8

About J. Ko

J. Ko is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Spectroscopy, Automotive Engineering and Renewable Energy, Sustainability and the Environment, having authored 41 papers that have together received 390 indexed citations. Recurring topics across this work include Semiconductor Lasers and Optical Devices (32 papers), Photonic and Optical Devices (31 papers), Semiconductor Quantum Structures and Devices (16 papers), Advanced Fiber Optic Sensors (8 papers), Optical Network Technologies (5 papers), Spectroscopy and Laser Applications (4 papers), Advanced Fiber Laser Technologies (3 papers) and Spectroscopy and Quantum Chemical Studies (2 papers). The work is most often cited by research in Instrumentation (25 citations), Electrical and Electronic Engineering (361 citations), Atomic and Molecular Physics, and Optics (195 citations), Surfaces, Coatings and Films (16 citations) and Spectroscopy (26 citations). J. Ko has collaborated with scholars based in United States, South Korea and Germany. Frequent co-authors include L.A. Coldren, E.R. Hegblom, O. Sjölund, Yuliya Akulova, L. A. Coldren, B.J. Thibeault, J. A. Valdmanis, B. F. Levine, Denise Günther and Chris C. Phillips. Their work appears in journals such as Electronics Letters, IEEE Photonics Technology Letters, Applied Physics Letters, IEEE Journal of Quantum Electronics and Advanced Materials.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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