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Company · Hamamatsu · Japan

Hamamatsu Photonics (Japan)

In research, Hamamatsu Photonics (Japan) stands highest in Physical Sciences (#9,767 of 10,670 worldwide) and Engineering (#5,619 of 5,901 worldwide), 2022-now.

hamamatsu.com/us/en/index.htmlROR OpenAlex
World rank, 2022-now
#15,644
of 22,385 · #6,672 all time
Rank in Japan
#458
of 924
Research works
1.8k
▼ 5% vs 2018-21
Citations
32k
17.3 per fractional work
Top-10% rate
7.7%
all institutions 10.0%
vs its own fields
1.04×
1.00× is exactly expected
Open access
23%
world 40%
International
14%
world 18%
Hamamatsu Photonics (Japan)

What is Hamamatsu Photonics (Japan) known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #9,767 of 10,670 5.9%126 #3695
EngineeringField #5,619 of 5,901 5.0%67 #4934

Each strip is that field's whole ranked pool, with the notch where Hamamatsu Photonics (Japan) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Hamamatsu Photonics (Japan) work in?

In 2022-now, 68% of research at Hamamatsu Photonics (Japan) is in Physical Sciences, 18% in Health Sciences. Its largest fields are Engineering (36%), Medicine (18%), Physics and Astronomy (17%). It does 1.7× the world's share of Physical Sciences.

Physical Sciences: 139 fractional works · 67.8% of its workEngineering: 73 fractional works · 35.5% of its workElectrical and Electronic Engineering: 43 fractional works · 20.8% of its workBiomedical Engineering: 19 fractional works · 9.1% of its workComputational Mechanics: 3 fractional works · 1.5% of its workMedia Technology: 2 fractional works · 1.2% of its workAerospace Engineering: 2 fractional works · 0.9% of its workCivil and Structural Engineering: 1 fractional works · 0.6% of its workMechanics of Materials: 1 fractional works · 0.4% of its workMechanical Engineering: 1 fractional works · 0.4% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.2% of its workOcean Engineering: 0 fractional works · 0.2% of its workPhysics and Astronomy: 34 fractional works · 16.8% of its workAtomic and Molecular Physics, and Optics: 12 fractional works · 5.9% of its workRadiation: 11 fractional works · 5.5% of its workInstrumentation: 5 fractional works · 2.3% of its workNuclear and High Energy Physics: 3 fractional works · 1.4% of its workAstronomy and Astrophysics: 2 fractional works · 0.8% of its workAcoustics and Ultrasonics: 1 fractional works · 0.5% of its workStatistical and Nonlinear Physics: 0 fractional works · 0.2% of its workChemistry: 13 fractional works · 6.2% of its workSpectroscopy: 11 fractional works · 5.4% of its workAnalytical Chemistry: 1 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 0.3% of its workComputer Science: 7 fractional works · 3.2% of its workComputer Vision and Pattern Recognition: 3 fractional works · 1.3% of its workArtificial Intelligence: 2 fractional works · 0.9% of its workComputer Networks and Communications: 1 fractional works · 0.5% of its workHardware and Architecture: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workMaterials Science: 6 fractional works · 3.2% of its workMaterials Chemistry: 3 fractional works · 1.7% of its workBiomaterials: 1 fractional works · 0.6% of its workElectronic, Optical and Magnetic Materials: 1 fractional works · 0.4% of its workPolymers and Plastics: 0 fractional works · 0.2% of its workSurfaces, Coatings and Films: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnvironmental Science: 2 fractional works · 1.2% of its workGlobal and Planetary Change: 1 fractional works · 0.4% of its workSmaller subfields together: 2 fractional works · 0.7% of its workEarth and Planetary Sciences: 2 fractional works · 1.2% of its workAtmospheric Science: 2 fractional works · 1.1% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemical Engineering: 1 fractional works · 0.4% of its workBioengineering: 1 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workEnergy: 0 fractional works · 0.1% of its workHealth Sciences: 38 fractional works · 18.4% of its workMedicine: 37 fractional works · 18.2% of its workRadiology, Nuclear Medicine and Imaging: 18 fractional works · 8.9% of its workOncology: 3 fractional works · 1.6% of its workPhysiology: 3 fractional works · 1.4% of its workPulmonary and Respiratory Medicine: 2 fractional works · 1.0% of its workCardiology and Cardiovascular Medicine: 1 fractional works · 0.5% of its workNeurology: 1 fractional works · 0.4% of its workGenetics: 1 fractional works · 0.4% of its workBiochemistry: 1 fractional works · 0.4% of its workEpidemiology: 1 fractional works · 0.4% of its workPsychiatry and Mental health: 1 fractional works · 0.4% of its workPediatrics, Perinatology and Child Health: 1 fractional works · 0.3% of its workSurgery: 1 fractional works · 0.3% of its workPublic Health, Environmental and Occupational Health: 0 fractional works · 0.2% of its workEndocrinology, Diabetes and Metabolism: 0 fractional works · 0.2% of its workPharmacology: 0 fractional works · 0.2% of its workNephrology: 0 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 1.2% of its workNursing: 0 fractional works · 0.2% of its workDentistry: 0 fractional works · 0.1% of its workLife Sciences: 28 fractional works · 13.8% of its workBiochemistry, Genetics and Molecular Biology: 19 fractional works · 9.1% of its workMolecular Biology: 9 fractional works · 4.5% of its workBiophysics: 5 fractional works · 2.4% of its workStructural Biology: 1 fractional works · 0.6% of its workGenetics: 1 fractional works · 0.5% of its workCancer Research: 1 fractional works · 0.3% of its workCell Biology: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.4% of its workNeuroscience: 5 fractional works · 2.3% of its workCognitive Neuroscience: 1 fractional works · 0.7% of its workCellular and Molecular Neuroscience: 1 fractional works · 0.6% of its workNeurology: 1 fractional works · 0.3% of its workSensory Systems: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.4% of its workImmunology and Microbiology: 2 fractional works · 1.1% of its workImmunology: 2 fractional works · 1.0% of its workSmaller subfields together: 0 fractional works · 0.1% of its workAgricultural and Biological Sciences: 2 fractional works · 0.9% of its workPlant Science: 1 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.3% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.5% of its workPharmaceutical Science: 1 fractional works · 0.5% of its workSocial Sciences: 0 fractional works · 0.1% of its workPsychology: 0 fractional works · 0.0% of its workALL ITS WORKHamamatsuPhotonics (Japan)205fractional works, 2022-now
Life Sciences14%Physical Sciences68%Health Sciences18%Social Sciences0%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 21 fields, with their numbers
    1. Engineering7335.5%
    2. Physics and Astronomy3416.8%
    3. Chemistry136.2%
    4. Computer Science73.2%
    5. Materials Science63.2%
    6. Environmental Science21.2%
    7. Earth and Planetary Sciences21.2%
    8. Chemical Engineering10.4%
    9. Energy00.1%
    1. Medicine3718.2%
    2. Nursing00.2%
    3. Dentistry00.1%
    4. Health Professions00.0%
    1. Biochemistry, Genetics and Molecular Biology199.1%
    2. Neuroscience52.3%
    3. Immunology and Microbiology21.1%
    4. Agricultural and Biological Sciences20.9%
    5. Pharmacology, Toxicology and Pharmaceutics10.5%
    1. Psychology00.0%
    2. Economics, Econometrics and Finance00.0%
    3. Social Sciences00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.19× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.70× its world share, 18 worksBiochemistry, Geneti…Immunology and Microbiology: 1.08× its world share, 2 worksImmunology and Micro…Neuroscience: 1.40× its world share, 5 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.39× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 1.16× its world share, 1 worksChemical EngineeringChemistry: 3.97× its world share, 13 worksChemistryComputer Science: 0.42× its world share, 7 worksComputer ScienceEarth and Planetary Sciences: 0.74× its world share, 2 worksEarth and Planetary …Energy: 0.11× its world share, 0 worksEnergyEngineering: 2.37× its world share, 73 worksEngineeringEnvironmental Science: 0.23× its world share, 2 worksEnvironmental ScienceMaterials Science: 0.91× its world share, 6 worksMaterials SciencePhysics and Astronomy: 7.55× its world share, 34 worksPhysics and AstronomyDentistry: 0.11× its world share, 0 worksDentistryHealth Professions: 0.01× its world share, 0 worksHealth ProfessionsMedicine: 0.94× its world share, 37 worksMedicineNursing: 0.32× its world share, 0 worksNursingEconomics, Econometrics and Finance: 0.01× its world share, 0 worksEconomics, Econometr…Psychology: 0.01× its world share, 0 worksPsychology1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 7.5×. Every wedge is a field page.

All 20 fields, with their numbers
  1. Physics and Astronomy7.55×34 works
  2. Chemistry3.97×13 works
  3. Engineering2.37×73 works
  4. Biochemistry, Genetics and Molecular Biology1.70×18 works
  5. Neuroscience1.40×5 works
  6. Pharmacology, Toxicology and Pharmaceutics1.39×1 works
  7. Chemical Engineering1.16×1 works
  8. Immunology and Microbiology1.08×2 works
  9. Medicine0.94×37 works
  10. Materials Science0.91×6 works
  11. Earth and Planetary Sciences0.74×2 works
  12. Computer Science0.42×7 works
  13. Nursing0.32×0 works
  14. Environmental Science0.23×2 works
  15. Agricultural and Biological Sciences0.19×2 works
  16. Energy0.11×0 works
  17. Dentistry0.11×0 works
  18. Health Professions0.01×0 works
  19. Economics, Econometrics and Finance0.01×0 works
  20. Psychology0.01×0 works

Who are the top researchers at Hamamatsu Photonics (Japan)?

Ranked on the quality score, Masami Futatsubashi, Etsuji Yoshikawa and T. Omura lead among researchers whose main affiliation is Hamamatsu Photonics (Japan).

  1. 1 Masami Futatsubashi Japan · #437,854 worldwide 5.7k citations · 57 works
  2. 2 Etsuji Yoshikawa Japan · #624,931 worldwide 5.6k citations · 72 works
  3. 3 T. Omura Japan · #804,356 worldwide 2.5k citations · 77 works
  4. 4 Yuya Onishi Japan · #945,340 worldwide 620 citations · 36 works
  5. 5 Hiroyasu Itoh Japan · #1,423,129 worldwide 6.6k citations · 133 works
  6. 6 Yoji Yamashita Japan · #1,919,422 worldwide 889 citations · 19 works
  7. 7 Masakazu Kuwabara Japan · #2,156,502 worldwide 1.1k citations · 29 works
  8. 8 Kibo Ote Japan · #2,181,529 worldwide 936 citations · 68 works
  9. 9 Tadataka Edamura Japan · #2,233,410 worldwide 2.1k citations · 104 works
  10. 10 Shigeru Matsunaga Japan · #2,291,312 worldwide 1.5k citations · 39 works
All ranked researchers at Hamamatsu Photonics (Japan)

What are the most cited papers from Hamamatsu Photonics (Japan)?

The most cited paper from Hamamatsu Photonics (Japan) is "Reevaluation of absolute luminescence quantum yields of standard solutions using a spectrometer with an integrating sphere and a back-thinned CCD detector" (Kengo Suzuki, Atsushi Kobayashi, Shigeo Kaneko et al., 2009), with 1,029 citations. Next come "Microglial activation and dopamine terminal loss in early Parkinson's disease" (848) and "Resolution of distinct rotational substeps by submillisecond kinetic analysis of F1-ATPase" (843).

Most cited papers
#PaperReleasedCitations
1 Reevaluation of absolute luminescence quantum yields of standard solutions using a spectrometer with an integrating sphere and a back-thinned CCD detector Kengo Suzuki, Atsushi Kobayashi, Shigeo Kaneko et al. · Physical Chemistry Chemical Physics 2009 1,029
2 Microglial activation and dopamine terminal loss in early Parkinson's disease Yasuomi Ouchi, Etsuji Yoshikawa, Yoshimoto Sekine et al. · Annals of Neurology 24 Jan 2005 848
3 Resolution of distinct rotational substeps by submillisecond kinetic analysis of F1-ATPase Ryohei Yasuda, Hiroyuki Noji, Masasuke Yoshida et al. · Nature 19 Apr 2001 843
4 Diffraction phase microscopy for quantifying cell structure and dynamics Gabriel Popescu, Takahiro Ikeda, Ramachandra Rao Dasari et al. · Optics Letters 15 Mar 2006 829
5 Fluorescence navigation with indocyanine green for detecting sentinel lymph nodes in breast cancer Toshiyuki Kitai, Takuya Inomoto, Mitsuharu Miwa et al. · Breast Cancer Jul 2005 648
All 60 most cited papers, with filters and sorting

Which keywords describe research at Hamamatsu Photonics (Japan)?

By fractional works in 2022-now, weighted toward what it does more of than the world: Imaging, Crystal Growth, PET/CT, tumor, Medical Imaging, Cancer, Radiation Detection and Biosensors.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Imaging18▲ 37×6 topics
  2. Cancer13▲ 4.6×15 topics
  3. Crystal Growth11▲ 20×4 topics
  4. PET/CT10▲ 94×1 topic
  5. tumor10▲ 94×1 topic
  6. Biomedical Applications10▲ 4.2×11 topics
  7. Medical Imaging10▲ 9.4×3 topics
  8. Radiation Detection10▲ 109×2 topics
  9. Biosensors9▲ 9.0×7 topics
  10. Inorganic Scintillators9▲ 136×1 topic
  11. Scintillation Detectors9▲ 136×1 topic
  12. Photon Counting9▲ 64×3 topics
  13. Breath Analysis9▲ 42×2 topics
  14. Integrated Circuits8▲ 28×2 topics
  15. Optical Modulators8▲ 29×3 topics
  16. Gas Sensing8▲ 93×2 topics
  17. Spectroscopic Databases8▲ 157×1 topic
  18. Terahertz Quantum-Cascade Lasers8▲ 157×1 topic
  19. Raman Lasers8▲ 36×2 topics
  20. Metamaterials7▲ 25×4 topics
  21. Spectroscopy7▲ 21×7 topics
  22. Frequency Conversion6▲ 75×3 topics
  23. Microcavities6▲ 27×1 topic
  24. Silicon Photonics6▲ 28×1 topic
  25. Monte Carlo Simulation6▲ 14×3 topics
  26. Time-of-Flight6▲ 70×2 topics
  27. Laser Ranging5▲ 99×1 topic
  28. Single-Photon Detection5▲ 99×1 topic
  29. Security Applications5▲ 120×1 topic
  30. Terahertz Technology5▲ 120×1 topic
  31. Hyperspectral Imaging4▲ 7.8×3 topics
  32. Biomedical Imaging4▲ 36×2 topics
  33. Optical Fiber4▲ 20×3 topics
  34. Microwave Photonics4▲ 23×2 topics
  35. Magnetic Resonance Imaging4▲ 7.3×5 topics
  36. Near-Infrared Spectroscopy4▲ 21×2 topics
  37. Nonlinear Optics4▲ 17×4 topics
  38. Electric Discharge4▲ 166×1 topic
  39. Laser Oscillation4▲ 166×1 topic
  40. Radiation Effects3▲ 38×2 topics

Which research topics does Hamamatsu Photonics (Japan) publish most on?

By volume in 2022-now: Medical Imaging Techniques and Applications, Radiation Detection and Scintillator Technologies, Spectroscopy and Laser Applications and Photonic and Optical Devices.

Medical Imaging Techniques and Applications: 10 fractional worksRadiation Detection and Scintillator Technologies: 9 fractional worksSpectroscopy and Laser Applications: 8 fractional worksPhotonic and Optical Devices: 6 fractional worksAdvanced Optical Sensing Technologies: 5 fractional worksTerahertz technology and…5Terahertz technology and applications: 5 fractional worksLaser Design and Applications: 4 fractional worksAdvanced X-ray and CT Imaging: 3 fractional worksOptical Imaging and Spectroscopy Techniques: 3 fractional worksSemiconductor Lasers and Optical Devices: 2 fractional works
Radiology, Nuclear Medicine and ImagingRadiationSpectroscopyElectrical and Electronic Engineering2 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Medical Imaging Techniques and Applications Radiology, Nuclear Medicine and Imaging 10 works
  2. 2 Radiation Detection and Scintillator Technologies Radiation 9 works
  3. 3 Spectroscopy and Laser Applications Spectroscopy 8 works
  4. 4 Photonic and Optical Devices Electrical and Electronic Engineering 6 works
  5. 5 Advanced Optical Sensing Technologies Instrumentation 5 works
  6. 6 Terahertz technology and applications Electrical and Electronic Engineering 5 works
  7. 7 Laser Design and Applications Electrical and Electronic Engineering 4 works
  8. 8 Advanced X-ray and CT Imaging Biomedical Engineering 3 works
  9. 9 Optical Imaging and Spectroscopy Techniques Radiology, Nuclear Medicine and Imaging 3 works
  10. 10 Semiconductor Lasers and Optical Devices Electrical and Electronic Engineering 2 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available23.1%not open76.9%

World: 40% of research is openly available.

with international co-authors14.5%domestic only85.5%

World: 18% is written across borders.

How has Hamamatsu Photonics (Japan)'s research output changed?

Output in 2022-2025 was 5% lower than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Hamamatsu Photonics (Japan) as a percentage of every work published that year, 0.00099% in 2024.

still counting0.0025%0.0050%0.0075%Hamamatsu Photonics (Japan)0.00074% in 20251990200020102020

Fractional works of Hamamatsu Photonics (Japan) over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting10%20%all institutions10.0% in 2025Hamamatsu Photonics (Japan)4.2% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 16.2% in 2022.

Other research institutions in Hamamatsu

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Hamamatsu Photonics (Japan) on Science Explorer

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