What creates the light? And what makes the light stronger?
Lasers emit light through a process of optical amplification based on the stimulated emission of photons. They are focused through Rubies.
Lights are nothing but moving photons,they are created due to de-excitation of electrons(or atoms) in a matter. Laser (Light Amplication by Stimulated Emission of Radiation) is emitted by Spontaneous Emission and Stimulated Emission in a lasing material.Therefore Laser is nothing but amplified light. (I suggest you to read OPTICS by AJOY GHATAK).
