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The emission of photons by the gas medium that fills the RLG cavity is called as?

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The emission of photons by the gas medium that fills the RLG cavity is called as?

(a) Laser discharge

(b) Spontaneous discharge

(c) Spontaneous emission

(d) Laser emission

This question was posed to me in exam.

Question is taken from Gyroscopes in division Satellite Radio Navigation  & Inertial Navigation of Avionics

1 Answer

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Right choice is (c) Spontaneous emission

Best explanation: The gas medium that supplies the gain for the laser also occasionally emits photons which are unrelated to the laser signal. This is known as spontaneous emissions are leads to noise and random walk in the RLG angle output.

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