Question

Why optical pumping is not suitable for gaseous lasers ?

Answer 1

Answer:

Conventional light sources used for optical pumping have broad emission spectrum, so only a small part of the light is used in the excitation process. Because gas atoms absorb only a small portion of the spectrum, optical pumping is not generally an efficient method for gas lasers.

Explanation:

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Answer 2

Answer:

because optical pumpimp emitts a lot of spectrum i.e. a lot of dispersed light and gas atoms absorbs very little spectrum so it not useful