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| 项目编号 | 61378007 |
| 基于大角度非共线SBS的百皮秒激光脉冲高效放大技术研究 | |
| 王雨雷 | |
| 主持机构 | 哈尔滨工业大学 |
| 开始日期 | 2014 |
| 结束日期 | 2017 |
| 资助经费 | 720000(CNY) |
| 项目类别 | 面上项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | At present, the shock ignition is a hot point and front line subject in the field of laser fusion. However, the high peak power, high contrast and high energy hundred-picosecond pulse required in shock-ignition is challenging the present laser technique. The reason is that both CPA and MOPA are difficult to achieve an effective amplification of hundred-picosecond pulse. This project proposed a new method called non-collinear Brillouin amplifier with a large off-axis angle, which is based on the basis of stimulated Brillouin scattering (SBS) amplification. This amplification is appropriate for amplifying high-energy hundred-picosecond pulse needed in shock ignition. In addition, it is simple in construction and easy to be achieved. This project will concentrate four themes(As is shown in the following) on clarifying the mechanism of realizing high-efficiency amplification of hundred-picosecond pulse based on non-collinear SBS amplification, and realizing a high-energy output of hundred-picosecond laser pulse experimentally. The four themes are:(1) setting up a theoretical model for non-collinear SBS resonant amplification, (2) achieving an un-modulated hundred-picosecond Stokes signal pulse output, (3) investigating the change of gain characteristics and temporal waveform in the process of non-collinear SBS amplification, and (4) the SBS medium with adjustable Brillouin frequency difference. The results of this research will be of great significance in expanding the field of pulsed laser amplification, and exploring a new technology for realizing high-efficiency amplification of hundred-picosecond short laser pulses. |
| 中文关键词 | 激光放大 ; 受激布里渊散射 ; 非共线 ; 百皮秒 ; 冲击点火激光脉冲 |
| 来源机构 | 哈尔滨工业大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/345577 |
| 推荐引用方式 GB/T 7714 | 王雨雷.基于大角度非共线SBS的百皮秒激光脉冲高效放大技术研究.2014. |
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