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Laser and Optical Applications Lab
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The lab uses light and lasers to explore new value in areas ranging from semiconductor manufacturing to welding.
AboutAbout the lab
Finding new value for the world with light and lasers
The Laser and Optical Applications Lab conducts research that uses light and lasers to find new value for the world.
Lasers are a cutting-edge technology widely used in fields such as communications, processing, measurement, and medicine, and this lab is built on laser processing and nano- and microtechnology.
Its research covers EUV light sources used in semiconductor manufacturing, high-speed laser welding of copper and other metals, optoelectronic devices using semiconductor nano- and microcrystals, and diagnosis of eye function using spectroscopy.
On the lab's website, it is introduced under the name "Nakamura Lab."
Key terms
- EUV
- Extreme ultraviolet light with a wavelength of 13.5 nm. It is used as the exposure light source in today's cutting-edge semiconductor manufacturing.
- Laser-produced plasma
- A method of generating EUV light by striking a target with a laser to create plasma
- Zinc oxide (ZnO)
- A material attracting attention as an ultraviolet-emitting material with low environmental impact and high efficiency. Its nanocrystals are actively studied as components of optoelectronic devices.
- Nanoparticle-assisted laser deposition
- A crystal fabrication method developed independently by the lab. It requires no catalyst and can grow nanowires perpendicular to the substrate.
ResearchResearch themes
The lab studies lasers for a variety of fields, including light sources for semiconductor manufacturing, metal welding, optoelectronic devices, and biological measurement. Built on laser processing and nano- and microtechnology, it aims to find new value with light and lasers.
*Illustrative imageLaser-Produced Plasma EUV Light Sources
In cutting-edge semiconductor manufacturing, EUV light with a wavelength of 13.5 nm is used as the exposure light source, and it is generated by laser-produced plasma. The lab aims to develop a light source with lower power consumption and higher efficiency than the current combination of a CO2 laser and tin.
*Illustrative imageHigh-Speed Laser Welding with Blue Lasers
High-speed welding of copper and aluminum is in demand in the manufacturing of electrical and electronic components. The lab aims to establish high-speed, high-quality welding using high-power blue lasers, which copper absorbs readily, and has achieved high-speed hairpin welding of rectangular copper wires for electric vehicle motors. This is a result of joint research with Tamari Kogyo Co., Ltd.
*Illustrative imageNew Laser Processing Using Polarization and Phase
Controlling the polarization and phase of laser light produces processing phenomena that cannot be achieved with a basic laser beam. The lab aims to develop new processing technology that uses polarization, phase, and waveform in addition to wavelength and power, and is also working toward real-world implementation. This is a joint research theme with Prof. Ikegami of Kochi University of Technology.
*Illustrative imageOptoelectronic Devices Based on Zinc Oxide Nanocrystals
The lab fabricates zinc oxide (ZnO) nanocrystals using its own nanoparticle-assisted laser deposition method. It grows nanowires vertically and horizontally on sapphire substrates, and is currently trying to apply them to ultraviolet sensors, ultraviolet LEDs, and ultraviolet laser diodes.
MembersFaculty
The members of the Laser and Optical Applications Lab consist of faculty, technical specialists, and doctoral, master's, and undergraduate students.As of 2025
- ProfessorDaisuke Nakamura
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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: “Laser weld on helium-filled hard drive” Phiarc / CC BY-SA 4.0 (cropped)
- Laser-Produced Plasma EUV Light Sources: “Plasma globe 60th” Colin / CC BY-SA 3.0 (cropped)
- High-Speed Laser Welding with Blue Lasers: “Laser used to cool atoms with light” Noahlw / CC BY 4.0 (cropped)
- New Laser Processing Using Polarization and Phase: “Laser 02” Vislupus / CC BY-SA 4.0 (cropped)
- Optoelectronic Devices Based on Zinc Oxide Nanocrystals: “Zinc oxide” w:User:Walkerma / Public domain (cropped)
- Related lab (Electromagnetic Energy Applications Lab): “Electric Motor at the former Lukens Steel Company mill house” Nolabob / CC BY-SA 4.0 (cropped)
- Related lab (Functional Inorganic Materials × Excimer Laser Lab): “Excimer laser 1” IoOALP / CC BY-SA 4.0 (cropped)
- Related lab (Control and Optimization Lab): “Robots header” RealAws / CC BY-SA 4.0 (cropped)
- Related lab (〈Electronic Devices / Electronic Equipment〉): “Electronics workbench” James Bastow / CC BY-SA 2.0 (cropped)
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