Madubi na tagulla wani abu ne na musamman da ake amfani da shi a fasahar laser, kuma kayansa na asali shine ƙarfe na tagulla ko na jan ƙarfe. Madubi na tagulla yana nuna hasken laser ta hanyar samansa mai haske don jagora, mai da hankali, ko canza alkiblar hasken laser. Saboda yawan tasirin zafi, kyawawan halayen injiniya da juriyar tsatsa, jan ƙarfe yana da fa'ida ta musamman a cikin tsarin laser.
An mayar da hankali kan samar da samfuran gani masu inganci na tsawon shekaru 20 a cikin Wavelength.