Question

Explain why. He and Ne gases are not mixed in same proportion in He-Ne laser?​

Answer 1

Answer:

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Explanation:

The gas mixture is mostly helium, so that helium atoms can be excited. ... Therefore, a He-Ne laser that has lost enough of its helium (e.g., due to diffusion through the seals or glass) will lose its laser functionality because the pumping efficiency will be too low.