Towards a high efficiency amplifier based on Raman amplification
Towards a high efficiency amplifier based on Raman amplification
复制标题
迈向基于拉曼放大的高效放大器
DOI：
10.1088/1361-6587/ab56de
复制
发表时间：
2020
影响因子：
2.2
通讯作者：
Vieux G
中科院分区：
文献类型：
--
作者：
Vieux G
基于等离子体的超高功率激光放大器系统可以提供达到petawatt到exawatt功率的途径，大大超过由固态光学元件的当前低损伤阈值所施加的限制。理论上，非聚焦强度可以达到10 17 W cm− 2。拉曼放大方案已被证明是一个有前途的候选人，通过观察10%的能量转移效率，由于放大的噪声，这意味着潜在的更大的效率。然而，种子脉冲的受控放大迄今为止还没有超过7%的效率。在这里，我们讨论几个饱和机制，可以限制增益，如早期泵浦散射和热效应。我们发现，啁啾脉冲拉曼放大可以减轻这些有害影响。
Ultra high power laser amplifier systems based on plasma may provide a pathway to reach petawatt to exawatt powers, vastly exceeding the limitations imposed by the currently low damage threshold of solid state optical elements. In theory unfocused intensities of 10 17 W cm− 2 could be reached. The Raman amplification scheme has been demonstrated as a promising candidate through the observation of 10% energy transfer efficiency due to amplification of noise, which implies potentially much larger efficiencies. However, controlled amplification of a seed pulse has not hitherto exceeded an efficiency of 7%. Here we discuss several saturation mechanisms that can limit the gain, such as early pump scattering and thermal effects. We show that chirped pulse Raman amplification can mitigate these deleterious effects.
吸收在热等离子体拉曼放大中的作用
影响因子：
2.2
作者：
Ersfeld B
通讯作者：
Ersfeld B
影响因子：
2.2
作者：
Farmer, J. P.;Ersfeld, B.;Jaroszynski, D. A.
通讯作者：
Jaroszynski, D. A.