He-Ne laser construction and working
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Construction and operation. The gain medium of the laser, as suggested by its name, is a mixture of helium and neon gases, in approximately a 10:1 ratio, contained at low pressure in a glass envelope.
The excited heliumatoms collide with neon atoms, exciting some of them to the state that radiates 632.8 nm.
The excited heliumatoms collide with neon atoms, exciting some of them to the state that radiates 632.8 nm.
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