当光功率超过自聚焦临界阈值，会伴随自聚焦产生一条等离子体通道，光脉冲在其中能保持几乎不变的直径传输很长一段距离，而不受瑞利长度限制。
锦棉弹力闪光交织物经向为锦纶有光丝，纬向为棉氨纶包芯纱。
The nylon-cotton elastic and sparkling fabric is composed of nylon lustrous filament as warp yarn and cotton-polyurethane core-spun yarn as weft yarn.
讨论了光丝长距离传输特性在超宽带激光雷达和激光引导闪电等方面的潜在应用。
The potential application of filament in ultra-wide-band lidar and laser induced lightning is also analyzed.
而在光丝间距和离焦量变化过程中，激光束对复合热源平板堆焊焊缝表面成形的影响很小。
The influence of Nd:YAG laser on hybrid weld appearance is light in variation of laser-arc distance and defocusing distance.
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