The measurement of sound speed in the air is studied in the experiment by phase comparison method and standing wave method.
2
介绍将原子束激光准直技术和驻波聚焦沉积技术用于制作纳米级图形的基本原理和实验系统设计。
The basic principle and experimental system design for applying laser cooling and focused atomic beams technique to fabrication nano-patterns are introduced.
3
本文报道和讨论了在超声驻波作用下实现激光高斯光束空间强度整形的原理与实验。
The theory and corresponding experiment of the intensity profile modification of a Gaussian laser beam by an ultrasonic standing wave (controlled by electricity) are reported and discussed.
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