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83 labs · 0 student voices
Other departments in School of Informatics and Engineering ›Faculties at The University of Electro-Communications ›
Yoshiyasu Ueno, Professor
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The Ueno Lab studies ultrafast information and communication technology that manipulates optical signals while keeping them as light. Using its own original approaches, the lab studies new optical materials, devices, and circuits, aiming to handle high-speed optical signals at 200 gigabits per second. Its research fields are ultrafast optoelectronics, quantum electronics, optical signal processing, and optical frequency combs. The lab also works on optical logic gates, which serve as an "optical transistor" to replace the electronic transistor.
Takashi Kato, Associate Professor
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The Kato Lab was launched in October 2022 and studies new applications of optical frequency combs (optical combs) and ultra-precise optical measurement methods. An optical comb is broadband, phase-aligned light whose spectrum consists of lines evenly spaced on the frequency axis like the teeth of a comb. The lab works on developing optical phased arrays and methods for measuring 3D shapes instantaneously. It conducts joint research with the Minoshima Lab and the Asahara Lab in the same Department of Engineering Science.
Masato Sakano, Associate Professor
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The Sakano Lab directly observes the electronic and spin states of materials in which quantum mechanical effects appear prominently, aiming to understand and open up new physical properties. Its targets are bulk and nanoscale materials, such as topological materials and artificially stacked two-dimensional crystals. In addition to receiving samples from collaborators in Japan and abroad, the lab also works on fabricating samples of stacked two-dimensional crystals itself. The lab carries out joint research using large shared-use facilities such as NanoTerasu and the Photon Factory at the High Energy Accelerator Research Organization (KEK).
Chiaki Ohae, Associate Professor
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The Ohae Lab researches creating new laser light sources by freely manipulating nonlinear optical processes. Using a method that manipulates nonlinear optical processes by controlling the phase relationship of light, the lab aims to obtain single-frequency laser light at any wavelength from the mid-infrared to the vacuum ultraviolet. Using vacuum ultraviolet laser light, the lab is also working on laser cooling of hydrogen and antihydrogen atoms. The lab is also attempting to control electric current at ultrafast speed by controlling the waveform of light to the extreme.
Satoru Shoji
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The Shoji Lab has worked on microfabrication using light and on manipulating nanomaterials with light. The research page on the lab's website lists three-dimensional micro- and nanofabrication using two-photon polymerization, and the trapping, separation and extraction, and alignment control of nanomaterials based on optical radiation pressure. Its publications also include the development of composite materials of polymers with carbon nanotubes or plasmonic metal nanoparticles, and holographic lithography. Note that the papers listed on this page date up to around 2013.
Yun Zhang, Professor
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The Zhang Lab aims to control light as both a wave and a particle, deepen the understanding of light, and pioneer new technologies. Its research fields are optical engineering and photon science, and atomic, molecular, and quantum electronics. The lab has research teams, including a quantum optics team and a multiphoton interference team. Students mainly take the lead, pursuing research based on their own interests and learning from one another through lab seminars.
Masaki Tokurakawa, Associate Professor
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The Tokurakawa Lab develops high-intensity ultrashort-pulse laser sources, centered on the 2 μm wavelength band, and studies their applications. Laser sources are an important technology supporting Japanese industry and academia, but most are now imported from overseas, and the latest sources are sometimes unavailable in Japan. The lab therefore aims to develop and use cutting-edge lasers that are not on the market. Its long-term goal is a tabletop-sized, high-brightness light source that bridges soft X-rays, the mid-infrared, and terahertz (THz) regions.
Masayuki Katsuragawa, Professor
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The Katsuragawa-Oae Lab conducts laser experiments in East Building 6 and researches the development of short-wavelength, wavelength-tunable laser light. The lab has demonstrated that the process by which laser light is generated can be artificially manipulated and controlled, and it applies this technology to laser development. Another pillar of its work is the development of a high-power, high-intensity laser system for measuring metal atoms and ions in the mesopause, about 100 km above the ground. For students who wish to join the lab, the goal is to help them develop the ability to think things through for themselves.
Mitsuru Musha, Professor
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The Musha Lab researches the development of lasers whose frequency and intensity stability is raised to the utmost limit, along with their applications. For ultra-high-precision measurement, including gravitational wave detectors, the lab is developing highly stable light sources and ultra-stable optical frequency references. It also works on technology for transmitting an ultra-stable frequency reference over long distances through optical fiber without degrading it, and on developing new types of light sources that use optical fiber.
Shen Shen, Professor
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To clarify the physical foundations that raise the photoelectric conversion efficiency of quantum dot solar cells, the Shen Lab studies metal oxide substrates and semiconductor quantum dots. In a solar cell, quantum dots absorb light and generate carriers. The metal oxide electrode acts as an n-type semiconductor and smoothly transports the electrons that are generated. The lab also aims to use transient absorption spectroscopy to reveal how charges separate and recombine inside a solar cell under illumination.
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