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Nishiyama Lab
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A lab centered on semiconductor lasers, merging light and electronics on a single chip.
AboutAbout the lab
Building integrated circuits that merge light and electronics.
Nishiyama Lab studies optoelectronics, in particular photonic-electronic integrated circuits centered on semiconductor lasers.
It aims to realize low-power, efficient, high-capacity optical communication and optical sensors.
The lab works broadly, from circuit design to materials, crystal growth, device fabrication, and evaluation, using state-of-the-art facilities.
A distinctive strength is the ability to make optical devices such as semiconductor lasers starting from crystal growth, and the lab conducts joint research with many companies.
Key terms
- Photonic-electronic integrated circuit
- A circuit that combines components that send signals with light and electronic circuits that run on electricity on a single chip
- Crystal growth
- A technique for stacking atoms in an orderly way to form thin crystalline layers of semiconductors and other materials
- III-V semiconductors
- Semiconductors made by combining elements such as indium and gallium with elements such as phosphorus and arsenic. They are well suited to components that emit light
NewsLab news
Master's student wins an Excellent Question Award at the Suematsu Conference
Master's student receives the Student Excellent Poster Presentation Award at the June OPE (Optoelectronics) Workshop
Jointly with Tokyo Ohka Kogyo, the lab developed a method for fabricating optical circuits using UV nanoimprint
Master's student receives a Young Researcher Poster Award
ResearchResearch themes
The lab studies the optical devices required for each application, such as optical communication with capacity beyond terabits, on-chip optical interconnects, and optical radar. It aims to realize a platform centered on semiconductor lasers and large-scale photonic integrated circuits.
*Illustrative imagePhotonic integrated circuits on thin-film semiconductors
To replace electrical wiring with optical interconnects, the lab makes small, low-power photonic integrated circuits using thinly processed III-V semiconductors. The structure can implement in light a function that is key to machine-learning computation, and it can also serve as a light source for future 6G wireless.
*Illustrative imageCombining silicon and compound semiconductors
These are integrated circuits that combine silicon photonic circuits with semiconductors such as InP, which excel at emitting light. The lab develops high-capacity optical transceivers for future distributed computing.
*Illustrative imageBonding dissimilar materials
This is a technology for joining different materials without adhesive, in order to draw on the strengths of each. The lab has multiple bonding methods and also works on bonding many small chips onto a large substrate.
*Illustrative imageDiamond NV centers
The lab measures the light absorption of diamond NV centers, a promising material for magnetic field sensors, and designs photonic integrated circuits matched to the absorption wavelength.
MembersFaculty
Nishiyama Lab's members are faculty, researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorNobuhiko NishiyamaPublications ↗
- Assistant ProfessorKeisuke KawaharaPublications ↗
- Project ProfessorTsuyoshi HorikawaPublications ↗
- Project Associate Professor大礒 義孝
- Project Assistant ProfessorMoataz Eissa
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
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RelatedLabs similar to Nishiyama Lab
Miyamoto LabSchool of Engineering, Department of Electrical and Electronic EngineeringOptical wireless power transfer systems and optoelectronics
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Takemoto-Kiyota LabSchool of Engineering, Department of Electrical and Electronic EngineeringMotors, electrical machines, power electronics
Manaka-Taguchi LabSchool of Engineering, Department of Electrical and Electronic EngineeringOrganic electronics, dielectric engineering, optical measure…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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 diode chip” NASA
（PD NASA。 作者欄なし） / Public domain (cropped) - Photonic integrated circuits on thin-film semiconductors: “InP Mult-Project Wafer” JonathanMarks / CC BY-SA 4.0 (cropped)
- Combining silicon and compound semiconductors: “Silicon Photonics 300mm wafer” Ehsanshahoseini / CC BY-SA 4.0 (cropped)
- Bonding dissimilar materials: “5C2A5953R - – Silicon Wafer 20200519” Rob Bulmahn / CC BY 2.0 (cropped)
- Diamond NV centers: “Apollo synthetic diamond” Steve Jurvetson / CC BY 2.0 (cropped)
- Related lab (宮本智之研究室): “Fluorescence in calcite” Jan Pavelka / CC BY-SA 4.0 (cropped)
- Related lab (庄司研究室): “Optical patchcord” Sunmosk / CC BY 4.0 (cropped)
- Related lab (竹本・
清田研究室): “Stator Winding of a BLDC Motor” Medvedev / CC BY-SA 3.0 (cropped) - Related lab (間中・
田口研究室): “Organic crystal 1” RemiJos / CC BY 4.0 (cropped)
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