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Micro/Nano Laser Devices Lab
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The lab handles everything from making lasers to applying light.
AboutAbout the lab
From making the laser itself, to exploring light.
The Micro/Nano Laser Devices Lab (Oki Lab) is a lab that not only uses lasers but also works on making them.
The lab builds devices that can be printed or drawn, using computer-driven digital fabrication for the larger parts and the properties of polymers (commonly known as plastic materials) for the smaller parts.
The lab conducts research that can contribute to optical IoT, biochemical sensors, and more.
From fiscal year 2026, the lab also conducts research on terahertz wireless communication that uses optical technology.
Key terms
- PDMS
- Short for polydimethylsiloxane. A transparent, flexible, and easily processed silicone material
- Terahertz waves
- Radio waves that can use a wide frequency band, making them promising for future ultra-high-speed wireless communication. This lab works in the 300 GHz band
- Foot rot
- An important disease of sweet potatoes. The early stage of infection is hard to identify from appearance alone
NewsLab news
A student's paper was published in the journal Plant Methods
Assistant Professor Mikami received the "Electronics Letters Paper Award"
ResearchResearch themes
Centered on laser research, the lab not only uses lasers but also works on making them. Drawing on printing, digital fabrication, and the properties of polymers, the lab conducts research that can contribute to optical IoT, biochemical sensors, and more.
*Illustrative imagePrintable Optical Devices
Hard materials have long been the norm for optical systems, but the lab has proposed soft optical systems made of polydimethylsiloxane (PDMS), a transparent and flexible material. The lab develops them by taking advantage of features such as stable optical paths and optical axes, and the ability to add optical functions by mixing in other materials.
*Illustrative imageEarly Detection of Sweet Potato Foot Rot
The lab studies optical measurement technology that detects sweet potato foot rot non-destructively in the early stage of infection, when it is hard to tell from appearance. Using UV fluorescence imaging and FTIR spectroscopy, the lab is investigating methods to capture the spectral differences between infected individuals and healthy parts.
*Illustrative imagePDMS-Based Flexible Optical Functional Materials
This research incorporates voids, scatterers, dyes, quantum dots, absorbing materials, and more into PDMS to use it as a material that controls light. By introducing voids from the nano to the submicron scale, the lab aims to lower the refractive index and control how light is scattered.
*Illustrative imageHigher Security for Terahertz Wireless Communication
This research was added when Prof. Mikami joined the lab in fiscal year 2026. Using terahertz waves in the 300 GHz band and switching the wireless frequency at high speed with optical technology, the lab aims to achieve communication that is resistant to eavesdropping and jamming.
MembersFaculty
The members of the Micro/Nano Laser Devices Lab consist of faculty, doctoral and master's students, and undergraduates.As of 2026
- ProfessorYuji Oki
- Assistant ProfessorYuya Mikami
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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: “Lasers” 彭嘉傑 / CC BY 2.5 (cropped)
- Printable Optical Devices: “Bi telecentric lens” Laserlicht / CC BY-SA 4.0 (cropped)
- Early Detection of Sweet Potato Foot Rot: “Sweet-potato-field,katori-city,japan” katorisi / CC BY 3.0 (cropped)
- PDMS-Based Flexible Optical Functional Materials: “Flexible hackmanite film” Symbioosi / CC BY 4.0 (cropped)
- Higher Security for Terahertz Wireless Communication: “NYPD Wireless Security Cameras” z22 / CC BY-SA 3.0 (cropped)
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- Related lab (レーザー・光応用研究室): “OPA produced femtosecond UV laser beam” Abdullahkepceoglu / CC BY-SA 4.0 (cropped)
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