T. Hasegawa

Localizing nature of photo-excited states in SrTiO3

T. Hasegawa, Masanobu Shirai, Kōichiro Tanaka · Journal of Luminescence · 2000 · 128 citations

Natural Sciences, Materials Science, Physics +12

Bismuth-based optical fiber with nonlinear coefficient of 1360 W -1km-1

Naoki Sugimoto, T. Nagashima, T. Hasegawa et al. · Optical Fiber Communication Conference · 2004 · 82 citations

Natural Sciences, Materials Engineering, Materials Science +17

Bismuth-oxide-based nonlinear fiber with a high SBS threshold and its application to four-wave-mixing wavelength conversion using a pure continuous-wave pump

Ju Han Lee, T. Nagashima, T. Hasegawa et al. · Journal of Lightwave Technology · 2006 · 48 citations

Engineering, Materials Science, Optical Materials +14

Four-wave mixing based widely tunable wavelength conversion using 1-m dispersion-shifted bismuth-oxide photonic crystal fiber

K. K. Chow, K. Kikuchi, T. Nagashima et al. · Optics Express · 2007 · 36 citations · Full text

Engineering, Electrical Engineering, Digital Communication +16

Four-wave-mixing-based wavelength conversion of 40-Gb/s nonreturn-to-zero signal using 40-cm bismuth oxide nonlinear optical fiber

T. Nagashima, T. Hasegawa, Seiki Ohara et al. · IEEE Photonics Technology Letters · 2005 · 34 citations

Engineering, Electrical Engineering, Optical Materials +15