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difference between continuous and pulsed laser


Continuous laser light always comes out, just like a flashlight, it keeps on when you turn on the switch

  Pulse laser flashes one after another

You can only understand it this way, but in fact, the pulse width of a pulsed laser is very short. The pulse width refers to the time it takes to emit light each time, that is, the bright time, which is a few nanoseconds long (that is, 1/1000000000 seconds). The shortest one is only a few femtoseconds (1 nanosecond = 1,000,000 femtoseconds). You can imagine how short it is, and the average power of this laser is not small. Then, you can imagine that when it is bright, it is How strong is the light at the moment when there is laser output!

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