Enhanced laser-induced plasma channels in air

Plasma is a significant medium in high-energy density physics since it can hardly be damaged. For some applications such as plasma based backward Raman amplification （BRA）, uniform high-density and large-scale plasma channels are required. In the previous experiment, the plasma transverse diameter a...

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Published inChinese physics B Vol. 25; no. 3; pp. 256 - 261
Main Author 左言磊 魏晓峰 周凯南 曾小明 粟敬钦 焦志宏 谢娜 吴朝辉
Format Journal Article
LanguageEnglish
Published 01.03.2016
Subjects
Amplification
Channels
Damage
Delay
Density
Lingerie
Nonlinear optics
Plasma (physics)
拉曼放大
激光诱导
离子通道
空气
等离子体物理
等离子体通道
非线性光学
高能量密度
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/25/3/035203

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Summary:Plasma is a significant medium in high-energy density physics since it can hardly be damaged. For some applications such as plasma based backward Raman amplification （BRA）, uniform high-density and large-scale plasma channels are required. In the previous experiment, the plasma transverse diameter and density are 50-200 μm and 1-2 x 10^19 cm-3, here we enhance them to 0.8 mm and 8 x 10^19 cm-3, respectively. Moreover, the gradient plasma is investigated in our experiment. A proper plasma gradient can be obtained with suitable pulse energy and delay. The experimental results are useful for plasma physics and nonlinear optics.
Bibliography:plasma channel, laser-induced plasma, plasma measurement, plasma optics
11-5639/O4
Plasma is a significant medium in high-energy density physics since it can hardly be damaged. For some applications such as plasma based backward Raman amplification （BRA）, uniform high-density and large-scale plasma channels are required. In the previous experiment, the plasma transverse diameter and density are 50-200 μm and 1-2 x 10^19 cm-3, here we enhance them to 0.8 mm and 8 x 10^19 cm-3, respectively. Moreover, the gradient plasma is investigated in our experiment. A proper plasma gradient can be obtained with suitable pulse energy and delay. The experimental results are useful for plasma physics and nonlinear optics.
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/3/035203