群速 meaning in English
grouvelocity
Examples
- 2 . we measure the down - conversion ring with ccd and analysis the thickness of the down - conversion ring . 3
分析了抽运光的走离效应和群速失配对下转换过程的影响。 - Water waves . derivation of the equations and linearization . notions of dispersion and group speed . weak nonlinearity and solitary waves . perturbation expansions
水波。方程的导出及其线性化。离差和群速的概念。弱非线性和孤波。摄动扩展。 - ( b ) when the depth of the groove is relatively shallow , the helical triangle - shaped helical groove has the widest bandwidth , the least dispersion , and the fastest phase velocity
( 2 )当槽的深度较浅时,三角形螺旋槽的通频范围最大,且色散最弱,其中波的相速和群速最大。 - The effect of pump beam ' s walk - off and the group - velocity - mismatch in bbo crystal is discussed , the group - velocity - mismatch can be compensated by non - collinear phase - match when the angle between signal and idler beams equals to 14 . 4
当下转换光与抽运光夹角达到13 . 4度时，非共线相位匹配基本可以消除晶体中群速失配对下转换过程的影响。 - The phase matching and group velocity matching conditions of type - i and type - ii second harmonic generation ( shg ) are obtained according to the momentum and energy conservation laws . the group velocity delay of ultrashort pulse shg on clbo and the crystal length decided by the group velocity delay are analyzed and compared with bbo ' s
从动量守恒、能量守恒出发推导得出了超短脉冲倍频的类、类相位匹配和群速匹配条件，对clbo晶体用于超短脉冲倍频时的群速延迟以及由群速延迟决定的晶体长度进行了分析和数值模拟，并与bbo晶体进行了比较。