| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-12-04 |
| タイトル |
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タイトル |
Comprehensive experimental evaluation of temporal contrast enhancement techniques applied to the petawatt-class J-KAREN-P laser system |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Kiriyama Hiromitsu
Sagisaka Akito
Miyasaka Yasuhiro
Kon Akira
Nishiuchi Mamiko
Alexander Pirozhkov
Fukuda Yuji
Ogura Koichi
Kondo Kotaro
Nakanii Nobuhiko
Mashiba Yuji
NicholasPeter Dover
Liu Chang
Bock Stefan
Tim Ziegler
Thomas Püschel
Karl Zeil
Ulrich Schramm
Il Woo Choi
Chang Hee Nam
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We present a systematic experimental investigation of temporal contrast enhancement techniques for petawatt (PW)-class Ti:sapphire lasers utilizing a double chirped-pulse amplification (CPA) architecture. Particular attention is given to pre-pulses induced by post-pulses originating in the first CPA stage. One conventional and two advanced pulse-cleaning strategies are quantitatively evaluated: (i) a saturable absorber (SA), (ii) a femtosecond optical parametric amplifier (OPA) employing the idler pulse in a two-stage configuration, and (iii) sum-frequency generation (SFG) combining the signal and idler pulses from the OPA. All techniques are implemented and evaluated using the J-KAREN-P laser system with an output energy of about 20 J. To the best of our knowledge, this is the first report to directly and systematically compare the contrast of pre-pulses originating from the first CPA stage under identical experimental conditions in a high-energy PW-class laser facility. The results offer crucial insights into contrast optimization for future high-field applications. |
| 書誌情報 |
Advanced Photonics NEXUS
巻 4,
号 6,
p. 066011-1-066011-7,
発行日 2025-12
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| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1117/1.APN.4.6.066011 |
