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What is the principle of helium neon laser?
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Sep 8, 2020
by
helium
(
280
points)
What is the principle of helium neon laser?
helium
neon
laser
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1
Answer
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answered
Sep 8, 2020
by
1tbharddrive
(
240
points)
The excited
helium
atoms collide with
neon
atoms, exciting some of them to the state that radiates 632.8 nm. Without
helium
, the
neon
atoms would be excited mostly to lower excited states, responsible for non-
laser
lines.
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