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Wataru Kunishi
Researcher at Rohm
Publications - 25
Citations - 733
Wataru Kunishi is an academic researcher from Rohm. The author has contributed to research in topics: Photonic crystal & Laser. The author has an hindex of 10, co-authored 25 publications receiving 635 citations. Previous affiliations of Wataru Kunishi include Kyoto University.
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Journal ArticleDOI
Photonics: lasers producing tailored beams.
TL;DR: Photonic crystals are engineer to generate semiconductor lasers that produce a range of beam patterns while maintaining stable single-mode oscillation to contribute to the realization of compact lasers that are capable of producing diverse beam patterns on demand.
Journal ArticleDOI
On-chip beam-steering photonic-crystal lasers
Yoshitaka Kurosaka,Seita Iwahashi,Yong Liang,Kyosuke Sakai,Eiji Miyai,Wataru Kunishi,Dai Ohnishi,Susumu Noda +7 more
TL;DR: Using a composite photonic-crystal structure composed of both a square and rectangular lattice, the authors successfully realized an on-chip semiconductor laser whose emitted beams can be dynamically controlled by varying their relative lattice constants.
Proceedings ArticleDOI
On-chip beam-steering photonic-crystal lasers
Yoshitaka Kurosaka,Seita Iwahashi,Yong Liang,Kyosuke Sakai,Eiji Miyai,Wataru Kunishi,Dai Ohnishi,Susumu Noda +7 more
TL;DR: In this article, a beam-steering laser using photonic crystals is described, and the maximum beam steering angle is ∼±30°. But this is not the case in practice.
Journal ArticleDOI
Dynamic wavelength tuning of channel-drop device in two-dimensional photonic crystal slab
TL;DR: In this paper, a two-dimensional photonic crystal slab is used for tuning the operating wavelength of a channel add/drop device based on a 2D crystal slab, where the temperature increase is induced by the absorption of external light.
Journal ArticleDOI
Photonic-crystal lasers with high-quality narrow-divergence symmetric beams and their application to LiDAR
Masahiro Yoshida,Menaka De Zoysa,Kenji Ishizaki,Wataru Kunishi,Wataru Kunishi,Takuya Inoue,Koki Izumi,Ranko Hatsuda,Susumu Noda +8 more
TL;DR: In this paper, a broad-area coherent photonic crystal surface-emitting laser (PCSEL) was proposed for time-of-flight (ToF) LiDAR system.