飞秒激光与水相互作用的现象与研究进展

对国内外关于飞秒激光与水相互作用主要研究领域的研究进展和一些新兴的研究方向进行了简单介绍，并简述了这些研究的应用前景。     

10 Hz,23 TW掺钛蓝宝石激光装置

建成一台10 Hz,23TW掺钛蓝宝石激光装置,中心波长为790 nm.压缩后可在33.9fs期间输出778 mJ能量.并报道该激光装置的一些性能.     

载波包络相位稳定的6 fs超快强激光脉冲及其在高次谐波产生中的应用

脉冲宽度40 fs,功率1.1 W的载波包络相位(CEP)稳定的飞秒激光脉冲在充氩气的空芯光纤内由于自相位调制频谱展宽,通过啁啾镜和斜劈补偿色散,最终可获得脉冲宽度为6 fs的载波包络相位稳定的强激光脉冲.将之应用到高次谐波实验中得到了脉冲宽度为500 as的单个阿秒脉冲.     

阿秒啁啾的动态补偿

强场高次谐波(HHG)与阿秒脉冲的产生是重要的前沿科学研究领域。阿秒脉冲以前所未有的精度探测超快电子动力学以及可     

Red Shift and Broadening of Backward Harmonic Radiation from Electron Oscillations Driven by Femtosecond Laser Pulse

The characteristics of backward harmonic radiation due to electron oscillations driven by a linearly polarized fs laser pulse are analysed considering a single electron model. The spectral distributions of the electron＇s backward harmonic radiation are investigated in detail for different parameters of the driver laser pulse. Higher order harmonic radiations are possible for a sufficiently intense driving laser pulse. We have shown that for a realistic pulsed photon beam, the spectrum of the radiation is red shifted as well as broadened because of changes in the longitudinal velocity of the electrons during the laser pulse. These effects are more pronounced at higher laser intensities giving rise to higher order harmonics that eventually leads to a continuous spectrum. Numerical simulations have further shown that by increasing the laser pulse width the broadening of the high harmonic radiations can be controlled.     

The Electron Trajectory in a Relativistic Femtosecond Laser Pulse

In this report, we start from Lagrange equation and analyze theoretically the electron dynamics in electromagnetic field. By solving the relativistic government equations of electron, the trajectories of an electron in plane laser pulse, focused laser pulse have been given for different initial conditions. The electron trajectory is determined by its initial momentum, the amplitude, spot size and polarization of the laser pulse. The optimum initial momentum of the electron for LSS （laser synchrotron source） is obtained. Linear polarized laser is more advantaged than circular polarized laser for generating harmonic radiation.     

超短脉冲强激光场产生高次谐波相位匹配技术的最新研究进展

总结了超短脉冲强激光场高次谐波产生相位匹配技术的最新进展;对高次谐波相位匹配的理论进行了讨论,并对相位匹配技术的应用提出了一些看法.     

利用类锂离子4f－3d跃迁与4d－3p跃迁强度比测等离子体的电子密度的实验研究

利用类锂离子４ｆ－３ｄ跃迁与４ｄ－３ｐ跃迁强度比测等离子体的电子密度的实验研究李儒新，沈百飞，王晓方，陆培详，韩申生，范品忠，张正泉，徐至展（中国科学院上海光机所，上海２０１８００）等离子体的电子密度的测量一直是等离子体基本参数测量最重要的内容之一，...     

飞秒激光诱导材料表面纳米结构研究新进展

综述了利用飞秒激光脉冲在材料表而产生纳米结构现象的最新研究进展，介绍了在飞秒激光烧蚀过程中不同激光参量对纳米结构的影响，总结了纳米结构形成的主要物理机制。     

超强脉冲激光系统光束质量的测量和改善

总结了类高斯分布光束的M2 因子在实验测量中的数据处理方法 ,介绍在 5 4TW 46fs激光系统中测量M2 的实验设置以及改善该系统光束质量的措施 ,报道了测量结果并分析了该装置的性能