Then you send laser light through a beamsplitter to divide the beam between the two arms, and let the light bounce back and forth a few times before returning to the beam splitter.
然后你通过分光器发射一束激光，让光线在两条边不断反射再回到分光器。
2
If the two arms have identical lengths, then interference between the light beams returning to the beamsplitter will direct all of the light back toward the laser.
如果两条边一样长，分光器发射的激光将被完全反射回分光器。
3
The effects of optical medium including light beamsplitter and reflecting metallic film on laser polarization state in a coherent CO_2 lidar are discussed.