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Optical Device Engineering Lab
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A semiconductor laser lab opening up a new world of lasers.
AboutAbout the lab
Opening up a new world of lasers
The Optical Device Engineering Lab studies semiconductor lasers with the goal of opening up a new world of lasers.
It aims for leaps that would change conventional assumptions about existing lasers by at least three orders of magnitude, advancing its research with an eye on everything from proposing theory to experimental demonstration and practical use in society.
Research themes include a full-color laser that emits red, blue, and green light from a single semiconductor laser and its application to optical tweezers, higher output by arranging many VCSELs, and wavelength-stable lasers for atomic clocks.
Because the lab is in its start-up phase, students are also deeply involved in refining research themes and building the experimental environment.
Key terms
- VCSEL
- A surface-emitting semiconductor laser that emits light perpendicular to its surface.
- Phase locking
- Aligning the timing (phase) of the waves of many laser beams.
- Optical tweezers
- A technique that uses laser light to trap and move tiny objects.
NewsLab news
View More ↗ResearchResearch themes
The Hamaguchi Lab pursues research on semiconductor lasers with the goal of opening up a new world of lasers. Its research themes include full-color lasers, higher output through phase locking, and light sources with stable wavelengths.
*Illustrative imageFull-color semiconductor lasers and optical tweezers
The lab designs and fabricates a new type of laser that simultaneously emits red, blue, and green light from a single semiconductor laser. It also works on applications to optical tweezers.
*Illustrative imagePhase-locked arrays for higher output
This research aims to keep beam quality from degrading even when many lasers are arranged together. By arranging VCSELs in an array and aligning the phase of their light, the lab aims to achieve higher output.
*Illustrative imageUltra wavelength-stable lasers for atomic clocks
For next-generation GPS and chip-scale atomic clocks, the lab is working on semiconductor laser light sources whose wavelength does not drift over long periods of time.
MembersFaculty
The joint members page with the Hamamoto Lab lists faculty, visiting professors, research advisors, secretaries and administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTatsushi Hamaguchi
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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: “Laboratorium FAMO UMK A 241” Ciacho5 / CC BY-SA 4.0 (cropped)
- Full-color semiconductor lasers and optical tweezers: “Lasers” 彭家杰 / CC BY-SA 3.0 (cropped)
- Phase-locked arrays for higher output: “High power taser test of VLT 4LGSF laser launch telecope (tno kamphues 97)” F. Kamphues/TNO/ESO / CC BY 4.0 (cropped)
- Ultra wavelength-stable lasers for atomic clocks: “Sr-lattice-optical-atomi-clock opt” The Ye group and Brad Baxley, JILA / Public domain (cropped)
- Related lab (Electronic Systems Engineering Lab): “MicroLEDs” Snehit Jamere / CC BY-SA 4.0 (cropped)
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- Related lab (Advanced Nanomaterials Science Lab): “Neon atoms between graphene sheets ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
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