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Ideguchi Lab
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The lab revolutionizes how light is measured with ultrashort pulse lasers and opens up new science.
AboutAbout the lab
Opening up new science through new ways of measuring light
The Ideguchi Lab studies new spectroscopy and imaging (microscopy) technologies that use ultrashort pulse lasers.
The lab aims to deeply understand the physics of light and to create simple, elegant photonic and quantum technologies.
The technologies it develops are applied to research in a wide range of fields, including physics, chemistry, biology, and medicine, and the lab also works to put them to practical use in society.
The lab also places importance on training people who will be active internationally through research.
Key terms
- Ultrashort pulse laser
- A laser that repeatedly emits pulses of light, each lasting only a very short time
- Spectroscopy
- A method of splitting light by wavelength (color) and measuring the intensity of each, in order to investigate the composition and state of a substance
- Label-free
- Observing samples such as cells as they are, without staining them with fluorescent dyes or similar labels
NewsLab news
Prof. Ideguchi received the Bioindustry Encouragement Award
A doctoral student received the Japan Society of Applied Physics Presentation Award
Prof. Ideguchi received the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (Science and Technology Award, Research Category)
Associate Professor Ideguchi received the Teruo Hiruma Award for Photonics Science
ResearchResearch themes
Based on the idea that new measurement methods give rise to new science, the lab studies new optical measurement methods for next-generation science, and also pursues fundamental science research using them. It also puts strong effort into spreading new technologies to industry.
*Illustrative imageUltrafast Spectroscopy with Ultrashort Pulse Lasers
The lab develops new spectroscopic techniques that take advantage of the properties of ultrashort pulsed light. Using dual-comb spectroscopy, which combines optical frequency combs, and time-stretch spectroscopy, it has achieved the world's fastest spectroscopy, and it applies these techniques to measurements in chemistry and biology.
*Illustrative imageLabel-Free Microscopy and Life Science
The lab develops "label-free" microscopes that observe cells and other samples without staining them. Using molecular vibrations, it has imaged fine structures inside bacteria, and in collaboration with the Graduate School of Pharmaceutical Sciences, it studies thermal phenomena inside cells.
*Illustrative imageQuantum Optical Measurement
The lab applies quantum optics to optical measurements such as spectroscopy and imaging, and works on developing measurement technologies with new functions and outstanding performance.
*Illustrative imageComputational Optical Measurement
The lab combines clever optical hardware design with information science techniques to develop technologies that improve measurement performance or make measurement simpler and more accessible. In collaboration with the Graduate School of Information Science and Technology, it works on spectroscopy and imaging using compressed sensing and machine learning.
MembersFaculty
The lab's members include faculty, JSPS Research Fellows, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakuro IdeguchiPublications ↗
- Assistant ProfessorKazuki HashimotoPublications ↗
- Project Assistant ProfessorKeiichiro Toda
- Assistant ProfessorZicong Xu
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “TiSa laser” Mathieu Perrin / CC BY 2.5 (cropped)
- Ultrafast Spectroscopy with Ultrashort Pulse Lasers: “Dual comb chip” Quantumavik / CC BY 4.0 (cropped)
- Label-Free Microscopy and Life Science: “Phase shift image of cells in 3D” Egelberg / CC BY-SA 3.0 (cropped)
- Quantum Optical Measurement: “Density matrix squeezed vacuum” Gerd Breitenbach / CC BY-SA 3.0 (cropped)
- Computational Optical Measurement: “Single-pixel imaging” Higham, C.F., Murray-Smith, R., Padgett, M.J. et al. / CC BY 4.0 (cropped)
- Related lab (Endo Lab): “Infrared (1064 nm) Laser Beams and Pre-Mode Cleaner” Tobin from Rochester, NY, USA / CC BY-SA 2.0 (cropped)
- Related lab (Ashihara Lab): “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
- Related lab (Kimura Lab): “SPring- img pano” en:User:Artorius / CC BY-SA 3.0 (cropped)
- Related lab (Katori-Ushijima Lab): “Sr-lattice-optical-atomi-clock opt” The Ye group and Brad Baxley, JILA / Public domain (cropped)
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