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Observation of ultrafast impact ionization in diamond driven by mid-infrared femtosecond pulses
https://repo.qst.go.jp/records/80148
https://repo.qst.go.jp/records/80148600939c1-59f9-4836-a34b-c836c5668e35
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-09-06 | |||||
タイトル | ||||||
タイトル | Observation of ultrafast impact ionization in diamond driven by mid-infrared femtosecond pulses | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Kozak, M.
× Kozak, M.× Martinek, M.× Otobe, Tomohito× Trojanek, F.× Maly, P.× Otobe, Tomohito |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We report on observation of ultrafast impact ionization in monocrystalline diamond driven by high-intensity mid-infrared femtosecond laser pulses. The measurements are based on monitoring the excited carrier population during and after the interaction of the pre-excited sample with a strong infrared pulse by transient transmission spectroscopy and photoluminescence measurements. A two-fold increase of the initial carrier population due to impact ionization is observed with the peak infrared intensity of 2.5 TW/cm2. We observe that the threshold intensity for impact ionization decreases with increasing carrier density. The results are compared with numerical simulations of electron dynamics using time-dependent density functional theory. | |||||
書誌情報 |
Journal of Applied Physics 巻 128, p. 015701-1-015701-9, 発行日 2020-07 |
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出版者 | ||||||
出版者 | AIP | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0021-8979 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/5.0001983 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://aip.scitation.org/doi/10.1063/5.0001983 |