TOP เลเซอร์ SECRETS

Lasers can also have large temporal coherence, which permits them to emit mild with a very slim frequency spectrum. Temporal coherence can even be applied to produce ultrashort pulses of light with a wide spectrum but durations as short as an attosecond.[7]เครื่องเลเซอร์มาร์คกิ้งแบบใช้มื