Generation of high-energy 284  ps laser pulse without tail modulation by stimulated Brillouin scatte

来源 :ChineseOpticsLetters | 被引量 : 0次 | 上传用户:heixianshengzhs
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We obtain the output of a 284 ps pulse duration without tail modulation based on stimulated Brillouin scattering (SBS) pulse compression pumped by an 8 ns-pulse-duration, 1064 nm-wavelength Q-switched Nd:YAG laser. To suppress the tail modulation in SBS pulse compression, proper attenuators, which can control the pump energy within a rational range, are added in a generator-amplifier setup. The experimental result shows that the effective energy conversion efficiency triples when the pump energy reaches 700 mJ to 51%, compared with the conventional generator-amplifier setup.
其他文献
The application of laser pulses with psec or shorter duration enables nonthermal efficient ultrahigh acceleration of plasma blocks with homogeneous high ion energies exceeding ion current densities of 1012 A cm??2. The effects of ultrahigh acceleration of
Quantitative interferometric microscopy is an important method for observing biological samples such as cells and tissues. As a key step in phase recovery, a fast phase unwrapping algorithm is proposed. By shifting mod 2\pi wrapped phase map for one pixe
给出了用LS-3二极管激光光谱仪记录的SF_(6v_2 v_4)合频带的高分辨光谱,观察到重球陀螺分子核运动角动量改变的跃迁。
In order to achieve small size, light weight, and immunity to electromagnetic interference, it is desirable to replace bulky coaxial cables with optical fiber in advanced radar front-ends. Such applications require a large dynamic range that is beyond the
期刊
Yb-Er codoped Na2O-Al2O3-P2O5-xSiO2 glasses containing 0-20 mol% SiO2 were prepared successfully. The addition of SiO2 to the phosphate glass not only lengthens the bond between P^{5 } and non-bridging oxygen but also reduces the number of P=O bond. In co
期刊
利用共振激发技术和电场电离(EFI)方法研究了铕(Eu)原子偶宇称高激发态。实验共探测到89个态,其中报道了56个态的能级位置和光谱归属等信息。经过对有效主量子数和量子亏损进行理论分析,并结合文献结果的对比,不但认定它们属于4f76s(9S) np(8PJ或10PJ)里德伯系列,还填补了该系列中n=19~39各态的文献空白。另外,建议将Eu原子第一电离限修正为45734.2 cm-1,同时解释了在其附近所观察到的宽峰的物理机制。
高分遥感影像的场景分类是解译遥感影像信息的重要工作之一。为了准确提取出目标信息,针对高分遥感影像场景分类中存在的背景复杂、目标多样、目标信息与背景信息难以区分等问题,提出了一种基于显著性特征和深度卷积神经网络(DCNN)的高分遥感影像场景分类方法。首先,利用K-means聚类与超像素分割算法得到影像的颜色空间分布与颜色对比图,融合不同对比图,以得到显著图。然后,通过对数变换增强显著图中的特征,采用
期刊