Norihiko Nishizawa

TL;DR: In this paper, the authors demonstrated the ultrafast all optical switching using pulse trapping across zero-dispersion wavelength, where one pulse among four pulses with temporal separation of 1.5 ps is successfully trapped with -100% extinction ratio, which corresponds to a 0.67 THz OTDM signal.

TL;DR: In this article, the time domain magnetization dynamics of (Gd100-xREx)FeCo (RE = Yb, Tm, Er) alloy films with various compositions were measured using a high energy ultra short pulse fiber laser, and their g-factors and damping constants were estimated.

TL;DR: In this article, the authors presented a three-dimensional optical memory using a newly developed compact fiber laser and demonstrated two-photon absorption recording on a photochromic materials; diarylethene and achieved multilayer recording using the developed fiber laser.

TL;DR: In this paper, a broadband supercontinuum ultra-short light pulse is branched into reference light and probe light to input the probe light into an optical fiber and a signal light pulse 8 outputted from the optical fiber 6 is entered into a diffraction grating and subjected to time-space conversion into a frequency distribution 12 by a cylindrical lens 11.

TL;DR: In this article, the authors proposed a pulse light output device composed of: a short pulse light source, a pulse time width expansion fiber, a fiber amplifier, and a large-diameter fiber.