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

  2. A.

     Pumping

    B.

     Exciting

    C.

     Priming

    D.

     Raising

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    Answer : Option A

    Explanation :

    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.


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