THE BASIC PRINCIPLES OF เลเซอร์

Lasers can even have high temporal coherence, which permits them to emit light with a very slim frequency spectrum. Temporal coherence may also be employed to generate ultrashort pulses of light by using a broad spectrum but durations as quick as an attosecond.[7]ผู้ที่ต้องการกำจัดขน เลเซอร์เ�