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Company · Hamamatsu · Japan

Hamamatsu Photonics (Japan)

In research, Hamamatsu Photonics (Japan) stands highest in Physical Sciences (#5,575 of 12,888 worldwide) and Engineering (#6,112 of 6,636 worldwide), 2022–2025. Relative to its size it is most specialised in Physics and Astronomy — Physics and Astronomy is 7.8× its share of world research.

hamamatsu.com/us/en/index.htmlROR OpenAlex
World rank, 2022–2025
#8,837
of 28,054 · #3,681 all time
Rank in Japan
#228
of 1,070
Research works
1.8k
▼ 4% vs 2013–17
Citations
32k
17.3 per fractional work
Top-10% rate
12.0%
record average 16.5%
Open access
23%
world 28%

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

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #5,575 of 12,888 7.6%126 #2482
EngineeringField #6,112 of 6,636 4.7%67 #4398

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 world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does Hamamatsu Photonics (Japan) specialise in?

Where its research is concentrated relative to its size: Physics and Astronomy takes 7.8× the share of its output that it takes of world research.

  1. Physics and AstronomyField · 32.2 works7.8×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

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: 0.18× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.62× its world share, 16 worksBiochemistry, Geneti…Immunology and Microbiology: 1.16× its world share, 2 worksImmunology and Micro…Neuroscience: 1.43× its world share, 4 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.53× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 1.03× its world share, 1 worksChemical EngineeringChemistry: 3.80× its world share, 11 worksChemistryComputer Science: 0.36× its world share, 5 worksComputer ScienceEarth and Planetary Sciences: 0.78× its world share, 2 worksEarth and Planetary …Energy: 0.12× its world share, 0 worksEnergyEngineering: 2.41× its world share, 67 worksEngineeringEnvironmental Science: 0.23× its world share, 2 worksEnvironmental ScienceMaterials Science: 0.76× its world share, 5 worksMaterials SciencePhysics and Astronomy: 7.83× its world share, 32 worksPhysics and AstronomyMedicine: 0.96× its world share, 34 worksMedicineNursing: 0.35× 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, 7.8×. Every wedge is a field page.

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

Ranked on the composite score, Haruyoshi Toyoda, K. Yamamura and Kenkichi Tanioka lead among researchers whose main affiliation is Hamamatsu Photonics (Japan).

  1. 1 Haruyoshi Toyoda Japan · #78,171 worldwide 123 citations · 35 works
  2. 2 K. Yamamura Japan · #194,023 worldwide 100 citations · 28 works
  3. 3 Kenkichi Tanioka Japan · #213,259 worldwide 151 citations · 61 works
  4. 4 Hiroyuki Okada Japan · #301,472 worldwide 140 citations · 23 works
  5. 5 Tsutomu Hara Japan · #331,940 worldwide 51 citations · 27 works
  6. 6 Hiroyasu Itoh Japan · #380,339 worldwide 95 citations · 31 works
  7. 7 Toshiaki Kawai Japan · #497,593 worldwide 79 citations · 61 works
  8. 8 M. Watanabe Japan · #508,566 worldwide 77 citations · 24 works
  9. 9 H. Takahashi Japan · #559,880 worldwide 89 citations · 44 works
  10. 10 T. Omura Japan · #616,298 worldwide 85 citations · 20 works
All ranked researchers at Hamamatsu Photonics (Japan)

Which keywords describe research at Hamamatsu Photonics (Japan)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Imaging, Crystal Growth, PET/CT, tumor, Medical Imaging, Cancer, Radiation Detection and Inorganic Scintillators.

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

Size is fractional works in 2022–2025 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. Imaging17▲ 38×5 topics
  2. Cancer12▲ 4.9×12 topics
  3. Crystal Growth10▲ 20×4 topics
  4. PET/CT10▲ 96×1 topic
  5. tumor10▲ 96×1 topic
  6. Medical Imaging10▲ 10×3 topics
  7. Biomedical Applications10▲ 4.5×10 topics
  8. Radiation Detection10▲ 114×2 topics
  9. Inorganic Scintillators9▲ 144×1 topic
  10. Photon Counting9▲ 67×3 topics
  11. Scintillation Detectors9▲ 144×1 topic
  12. Biosensors8▲ 8.7×7 topics
  13. Deep Learning8▲ 1.31×11 topics
  14. Integrated Circuits8▲ 27×2 topics
  15. Optical Modulators8▲ 28×3 topics
  16. Breath Analysis8▲ 38×2 topics
  17. Raman Lasers7▲ 33×2 topics
  18. Metamaterials7▲ 27×4 topics
  19. Spectroscopic Databases7▲ 144×1 topic
  20. Terahertz Quantum-Cascade Lasers7▲ 144×1 topic
  21. Spectroscopy7▲ 21×6 topics
  22. Frequency Conversion6▲ 79×3 topics
  23. Monte Carlo Simulation6▲ 15×3 topics
  24. Microcavities5▲ 26×1 topic
  25. Silicon Photonics5▲ 27×1 topic
  26. Time-of-Flight5▲ 74×2 topics
  27. Laser Ranging5▲ 104×1 topic
  28. Single-Photon Detection5▲ 104×1 topic
  29. Security Applications4▲ 124×1 topic
  30. Terahertz Technology4▲ 124×1 topic
  31. Biomedical Imaging4▲ 36×2 topics
  32. Hyperspectral Imaging4▲ 7.5×3 topics
  33. Magnetic Resonance Imaging4▲ 8.0×5 topics
  34. Optical Fiber4▲ 18×3 topics
  35. Electric Discharge4▲ 173×1 topic
  36. Laser Oscillation4▲ 173×1 topic
  37. Microwave Photonics3▲ 21×2 topics
  38. Near-Infrared Spectroscopy3▲ 20×2 topics
  39. Nonlinear Optics3▲ 16×3 topics
  40. Dual-Energy CT3▲ 37×1 topic

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

By volume in 2022–2025: 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 A…7Spectroscopy and Laser Applications: 7 fractional worksPhotonic and Optical Dev…5Photonic and Optical Devices: 5 fractional worksAdvanced Optical Sensing Technologies: 5 fractional worksTerahertz technology and applications: 4 fractional worksLaser Design and Applica…4Laser Design and Applications: 4 fractional worksAdvanced X-ray and CT Imaging: 3 fractional worksOptical Imaging and Spectroscopy Techniques: 3 fractional worksIntegrated Circuits and Semiconductor Failure Analysis: 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 7 works
  4. 4 Photonic and Optical Devices Electrical and Electronic Engineering 5 works
  5. 5 Advanced Optical Sensing Technologies Instrumentation 5 works
  6. 6 Terahertz technology and applications Electrical and Electronic Engineering 4 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 Integrated Circuits and Semiconductor Failure Analysis 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: 28% of research is openly available.

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

World: 19% is written across borders.

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

Output in 2018–2022 was 4% lower than in 2013–2017.

1990200020102020
grewheldshrank

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

Other research institutions in Hamamatsu

All research institutions in Hamamatsu

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.