GK
TECHNOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The first step to getting output from a laser is to excite an active medium. What is this process called?
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Pumping
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Exciting
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Priming
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Raising
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Explanation:
Detailed explanation-1: -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.
Detailed explanation-2: -The active laser medium (also called gain medium or lasing medium) is the source of optical gain within a laser. The gain results from the stimulated emission of photons through electronic or molecular transitions to a lower energy state from a higher energy state previously populated by a pump source.
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