1) Double-pulsed laser
双脉冲激光器
2) Ruby double pulse laser
红宝石双脉冲激光器
3) double pulse
双脉冲
1.
Study on the preparation of Ni-PAN composite electrode with double pulse electroplating and its hydrogen evolution property;
双脉冲电沉积制备Ni-聚苯胺复合电极及其析氢性能的研究
2.
The particular scheme of refitted steady voltage power of direct current to double pulse steady power of plating is designed and completed.
设计并实现了一套由通用直流稳压电源改制成双脉冲周期反向电镀稳定电源的具体方案,该电路具有简捷实用,功能多,成本低,容易实现等特点,为脉冲电镀研究提供了方
3.
By treating the pulse propagation within the laser gain medium with the help of split step Fourier method, independently taking into account of the dispersion originating from the prism sequence, and making use of a generalized pulsewidth formula, the double pulse formation process is numerically simulated in a self consistent scheme.
在自锁模钛宝石激光器中 ,除可形成传统的单脉冲外 ,在适当的条件下 ,还可产生双脉冲。
4) dual pulse welding
双脉冲焊
5) pulse reversal current electrodeposition
双脉冲
1.
The effect of adding RE to plating bath on microstructure and corrosion resistance of Ni-Co alloy coatings prepared by pulse reversal current electrodeposition was studied by means of SEM/EDS, electrochemical analysis and corrosion mass loss etc.
通过扫描电镜、电化学分析和腐蚀失重等方法研究了镀液中添加RE对双脉冲电沉积法获得Ni-Co合金镀层的组织和耐蚀性的影响。
2.
The effect of adding RE to plating bath on corrosion resistance of Nickel coatings prepared by pulse reversal current electrodeposition was studied by means of SEM/EDS,electrochemical analysis and corrosion mass loss.
通过扫描电镜、电化学分析和腐蚀失重等方法,研究了镀液中添加RE对双脉冲电沉积法获得镍镀层的耐蚀性影响。
6) double-pulse
双脉冲
1.
Multi-segment Programmable Double-pulse Plating Power Source;
多段可编程双脉冲电镀电源
2.
Double-pulse reconstruction of a single-pulse LIA module;
直线感应加速器组元的双脉冲改造
3.
The morphology and corrosion behavior of Ni-Al_2O_3 composite coatings prepared by double-pulsed technique and oxidized under high temperature were analyzed by SEM,XRD and EDX.
采用扫描电镜、X射线衍射仪和能谱仪(EDX)对双脉冲法制备的几种NiAl2O3复合镀层经高温氧化后的形貌和物相进行分析。
参考词条
补充资料:超短脉冲激光频率转换材料
超短脉冲激光频率转换材料
materials for ultrashort pulses laser frequency conversion
超短脉冲激光频率转换材料materials forultrashort Pulses laser frequeney eonversion用于脉冲宽度从微微秒直到几十毫微微秒激光的频率转换材料。超短脉冲激光具有短的脉宽,较好的模式特性以及高的峰值功率,从而具有很强的非线性性能。经频率转换后,短波的超短脉冲可产生强的光化学反应,是探索微观世界和超高速现象的极为有用的光源。此外,采用薄片倍频材料的超短脉冲倍频,可以作为超短脉冲脉宽测量的一种简便有效的方法,在技术上有实用价值。 对超短脉冲激光频率转换材料的性能主要有以下要求:①高的光损伤闭值。由于超短脉冲的高峰值功率,因而对材料的光损伤阑值提出高的要求,一般要大于GW/cmZ。②相位匹配特性。超短脉冲在空间的尺度短到毫米及几百微米量级,短脉冲波包在材料中以群速度传播。因而,除一般的相速度匹配外,还应满足群速度匹配才能获得较高的能量转换效率。对光学均匀材料,要求基频和倍频波的折射率色散小,才能获得较好的群速度匹配。对I类匹配,群速度要求稍低;对n类匹配要求太苛刻,很难应用。由于群速度失配存在,一般器件只取亚毫米的厚度。过长的光程于能量转换无补,反而引入脉宽的展宽以及能量的损耗。③透过波段。首先要求对参与频率转换的激光波长有高的透过率。对超短脉冲应用场合,材料应有更短的紫外吸收边。其原因是吸收边会增加材料的折射率色散;远离使用波长的吸收边,可使材料获得较好的群速度匹配。 钱激光超短脉冲频率转换的常用材料是磷酸二氢钾(KDP)类晶体。此外,新开发的三硼酸锉(LBO)晶体,由于其高的抗光损伤阑值、好的紫外透过率以及小的色散,也是好的超短脉冲频率转换用材料。有机晶体精氨酸磷酸盐(LAP)和氛化精氨酸磷酸盐(D一LAP)也可用作超短脉冲频率转换用材料。 (邵宗书)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。