Question

why He is used in He-Ne laser

Answer 1

The Helium does not directly produce laser light but it acts as a buffer gas, the purpose of which is to assist/help the atoms of the other gas to produce lasing in as manner. When energy from the pumping source is applied He-Ne gas mixture then some of the energy is observed by the Helium atoms.

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Answer 2

Answer:

The Helium does not directly produce laser light but it acts as a buffer gas, the purpose of which is to assist/help the atoms of the other gas to produce lasing in as manner. When energy from the pumping source is applied He-Ne gas mixture then some of the energy is observed by the Helium atoms.

Explanation: