Laser is the acronym for
a) Light Amplification by Stimulated Emission of Radiation
b) Light Amplification by Spontaneous Emission of Radiation
c) Light Amplified by Stimulated Emission of Radiation
d) Light Amplification by Standard Emission of Radiation

1 Answer

Answer :

a) Light Amplification by Stimulated Emission of Radiation

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Last Answer : b. Light Amplification by Stimulated Emission of Radiation

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Last Answer : d) both a & c

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Last Answer : d. Coherent and stimulated

Description : Laser light is ______ emission. ∙ a. Coherent ∙ b. Stimulated ∙ c. Spontaneous ∙ d. Coherent and stimulated

Last Answer : ∙ d. Coherent and stimulated

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Last Answer : Threshold current.

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Last Answer : d) both b & c

Description : Differentiate between spontaneous and stimulated emission of light with diagram.

Last Answer : Spontaneous emission Stimulated emission Excited atoms comes to ground state on its own accord Excited atoms comes to ground state after interaction with incident photon. Radiations are in random ... Number of photons emitted are less Number of photons emitted are more

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Last Answer : a. Doppler shift of moving atoms and molecules

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Last Answer : Charles Townes and Arthur Schawlow

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Last Answer : a. Pulses of 694 nm red light

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Last Answer : a) ~ 10-3 s

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