Výsledky vyhledávání - "Dai Yoshitomi"

Optimization of laser-induced periodic surface structures formation on zirconia ceramic by ultrashort pulsed laser

Autor: Dai Yoshitomi, Kenji Torizuka, Yohei Kobayashi, Aiko Narazaki, Hideyuki Takada

Publikováno v: Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI.

Micro/nanoscale surface patterning of zirconia ceramic is needed for surface functionalization and performance enhancement, such as improved biocompatibility of medical devices, as well as device miniaturization. Therefore, formation of laser-induced

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e3b5346296f39edf5919e9ebf51e95b
https://doi.org/10.1117/12.2583379

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Autor: Tatsunori Shibuya, Dai Yoshitomi, Daisuke Satoh, Kazuyuki Sakaue, Masahito Tanaka, Hideyuki Takada, Hiroshi Ogawa, Kenji Torizuka, Yohei Kobayashi, Ryunosuke Kuroda

Publikováno v: Surface and Interface Analysis. 52

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8f4df97e0d6fba5500d326003d401a7
https://doi.org/10.1002/sia.6915

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Study on nonthermal–thermal processing boundary in drilling of ceramics using ultrashort pulse laser system with variable parameters over a wide range

Autor: Yohei Kobayashi, Kenji Torizuka, Aiko Narazaki, Hideyuki Takada, Dai Yoshitomi

Publikováno v: Applied Physics A. 126

Quality and throughput of laser material processing are influenced by multiple laser parameters as well as material properties. Since material degradation due to laser processing is generally related to heat-affected zone, quick optimization and real

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3364c6c1b7e37979751b69834814e6d
https://doi.org/10.1007/s00339-020-3410-2

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100-W Average-Power Femtosecond Fiber Laser System with Variable Parameters for Rapid Optimization of Laser Processing

Autor: Dai Yoshitomi, Hideyuki Takada, Kenji Torizuka, Yohei Kobayashi

Publikováno v: Conference on Lasers and Electro-Optics.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1f468b2d61fc6b57f8e5a780f2c2a9d
https://doi.org/10.1364/cleo_si.2019.sm3l.2

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Ultrafast laser processing of ceramics: Comprehensive survey of laser parameters

Autor: Aiko Narazaki, Kenji Torizuka, Dai Yoshitomi, Yohei Kobayashi, Hideyuki Takada

Publikováno v: Journal of Laser Applications. 33:012009

The productivity and quality of laser micromachining depend on multiple laser parameters that are intricately correlated. For these optimizations, a quick survey of laser parameters is vital. Recently, the authors developed a Yb-doped fiber chirped-p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::63b7d6dd9736bf56ba0554b7c6830a46
https://doi.org/10.2351/7.0000310

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41-fs, 35-nJ, Green Pulse Generation from a Yb-doped Fiber Laser System

Autor: Kenji Torizuka, Dai Yoshitomi, Kazuhiko Misawa, Hideyuki Takada, Yuhei Chiba

Publikováno v: Optics express. 25(3)

We report ultrafast green pulse generation from a Yb-doped fiber laser system with gain-narrowing compensation. The chirped-pulse amplification system outputs repetitive 3 MHz pulses with an energy of 35 nJ and a reconstructed pulse duration of 41 fs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::baac804acd718265db2c3249b297d964
https://pubmed.ncbi.nlm.nih.gov/29519059

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