| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-05-13 |
| タイトル |
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タイトル |
Highly Stable and Efficient Spatiotemporal Filtering in Cross-Polarized Wave Generation via Nonlinearity Tailoring in Multi-Plate Crystals |
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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 |
Dinh Thanh-Hung
Mori Michiaki
Nagashima Keisuke
Kojima Sadaoki
Hasegawa Noboru
Ishino Masahiko
Hata Masayasu
Okada Hajime
Aoyama Makoto
Miyatake Tatsuhiko
Sakaki Hironao
Kando Masaki
Shirai Toshiyuki
Nishikino Masaharu
Kondo Kiminori
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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 propose a simple and effective method for achieving highly stable and efficient cross-polarized wave (XPW) generation in a multi-crystal setup with excellent beam quality. Unlike previous approaches optimized for highly nonlinear regimes, our method increases the number of crystals to achieve moderate nonlinear evolution, suppressing higher-order modulation effects. Thin nonlinear crystals are precisely spaced and fixed at specific rotational angles to maximize spatial mode matching via the Kerr lensing effect. Using three uncoated BaF? crystals, we achieved an XPW conversion efficiency of 33%, with an estimated internal efficiency of up to 40% when accounting for Fresnel losses. A mode selector reduced the XPW signal by 20% but resulted in nearly diffraction-limited beam quality (M^2=1.07) and exceptional pointing stability below 5 μrad. The XPW spectral broadening factor of 4.5 led to a pulse shortening factor of 3.2, while energy fluctuations (1.5%) were lower than those of the input (2.4%). Furthermore, a temporal contrast in the range of 10^-11 to 10^-12 was achieved after further amplification. These characteristics make the proposed approach highly suitable for seed injection in advanced lasers for strong-field physics applications. |
| 書誌情報 |
Optics express
巻 33,
号 19,
p. 21318-21327,
発行日 2025-05
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| 出版者 |
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出版者 |
OSA Publishing |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1364/OE.561774 |
