beam waist

基本解釋

Under the condition of optical breakdown, a high ratio of laser to sound energy conversion can be obtained with a large laser beam waist radius.
在保證光擊穿的條件下，選擇較大的激光焦斑半徑，可提高光聲能量轉(zhuǎn)換效率。
But, when the doughnut laser beam is used as trapping light, relative index can be less than 1. The beam waist of focused laser beam has a virtual affection for the trapping force.
但是，在空心光束中可以實現(xiàn)對地折射率粒子的穩(wěn)定捕獲，即粒子的相對折射率可以小于1。
By use of the angular-spectrum analysis and the Fourier transform method, a correction method is obtained to describe the propagation of few-cycle pulsed beam with constant beam waist.
利用角譜分析和傅里葉變換的方法，得到一種描述幾個周期的等束腰寬度脈沖光束傳輸?shù)拿}沖修正方法。