| Acoustic Diagnostics of Plasma Channels Induced by Intense Femtosecond Laser Pulses in Air |
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| 作者姓名： | 郝作强 俞进 张杰 李玉同 郑志远 王鹏 王兆华 令维军 魏志义 |
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| 作者单位： | [1]LaboratoryofOpticalPhysics,InstituteofPhysics,ChineseAcademyofSciences,Beijing100080 [2]LaboratoiredeSpectroétrieIoniqueetMoléculaire,UMRCNRS5579,UniversitéClaudeBernard-Lyon1,43,Bd.du11Novembre1918,F-69622VilleurbanneCedex,France |
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| 摘 要： | Long plasma channels induced by femtosecond laser pulses in air are diagnosed using the sonographic method. By detecting the sound signals along the channels, the length and the electron density of the channels are measured. Refocusing is also observed at different laser energies and different focal lengths. We find that the sonographic method has manifest advantages compared to other techniques.
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| 关 键 词： | 自动诊断 等离子体 人工通道 毫微秒脉冲 激光器 |
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