Details, Fiction and เลเซอร์
Lasers can even have high temporal coherence, which permits them to emit mild with an exceptionally narrow frequency spectrum. Temporal coherence will also be utilised to produce ultrashort pulses of light by using a wide spectrum but durations as short as an attosecond.[seven]ในลำแสงเลเซอร์ คลื่นแสงจ