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With a neat energy level diagram describe the construction and working of He-Ne laser. What are its merits and demerits ? OR Explain construction and working of He:Ne laser with neat label diagram.
written 5.3 years ago by gravatar for vermavarsha432 vermavarsha432 • 1000 modified 4.1 years ago by gravatar for sanketshingote sanketshingote • 100
advanced engineering physics
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written 5.3 years ago by gravatar for teamques10 teamques10 ★ 65k

It consists of a long discharge tube of length 50 cm and diameter 1 cm. The tube is filled with a mixture of He and Ne in the ratio 10:1. Electrodes are provided to produce a discharge in the gas and they are connected to high voltage power supply. The …

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