LASER is Light Amplification By Stimulated Emission of Radiation.
The 5 applications of Lasers are given below :-
1) Laser beam is used to correct the retinal detachment by eye specialist.
2) Laser are used in the fields of 3D photography called
3) More amount of data can be sent due to the large band with of semiconductor lasers.
4) Lasers are used to produce certain chemical reactions.
5) Lasers are used to cut, drill, weld and remove metal from surfaces.
This is a pic of Laser beam :-