E-mail: syama [AT] cntp.t.u-tokyo.ac.jp
Tel: 03-5452-5150 (Komaba), 03-5841-6659 (Hongo)
FAX: 03-5452-5155 (Komaba)
1991.02 Research Associate, RCAST, The University of Tokyo
1994.08 Lecturer, RCAST, UTokyo
1995.04 Lecturer, School of Engineering, UTokyo
1996.04 Visiting Research Fellow, ORC, Southampton Univ., UK (-1998.4)
1999.04 Associate Professor, School of Frontier Sciences, UTokyo
2004.04 Associate Professor, School of Engineering, UTokyo
2009.07 Professor, School of Engineering, UTokyo
2013.04 Professor, RCAST, UTokyo
We, the Yamashita-Lab., are mainly focusing on photonic devices, such as fiber devices and lasers, for telecom, sensing, and medical applications, and also on their system applications.
¹Fast and wide wavelength tunable fiber lasers and their OCT applications
We are working on the fiber lasers using Rare-earth-doped fibers or semiconductors for telecom and sensing applications. We are currently emphasizes on fast and wide wavelength tunable fiber lasers having very wide tuning range (>100nm) and a very fast tuning speed (Repetition rate > 100kHz). We are also trying to apply the lasers to the optical coherence tomography systems (OCT).
²Nanocarbon photonic devices and their applications
Nanocarbons, such as Carbon nanotubes (CNT) and graphene, have very interesting useful, not only mechanical and electrical, but also photonic properties. We are pursuing researches on nanocarbon photonics. We concentrate on the stable and high-energy short-pulse fiber lasers using the nanocarbons. Nanocarbons have very fast saturable absorption, which enables generation of short (~1ps) optical pulses through passive mode locking. We also demonstrated ultra-wideband supercontinuum (SC) generation using the laser as a seed source. We are trying to apply the SC source to the OCT system.
³Photonic devices for telecom and sensing applications
We are also working on photonic devices for telecom and sensing applications, such as wavelength converter and parametric amplifier using fiber nonlinearity, fiber lasers, and fiber filters.
Our Lab consists of highly motivated and talented members: the professor, associate professor, assistant professors, administrative assistant, post-doctoral research fellow, graduate students, undergraduate students, and visiting students. Contact us and come visit our lab to find out more!