The first step to getting output from a laser is to excite an active medium. What is this process called?


Menka Sharma
Music gives me peace...
Wednesday, 06 January 2021 09:24 AM
A collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.