Sharanya Asked a Question
March 31, 2021 4:52 pmpts 30 pts
78. Nd-YAG Laser is an example of a 4-level laser whereas Ruby laser is a 3-level laser. Nd-YAG lasers have the special feature that (A) They can generate laser light at different wavelengths since 4 different energy levels are involved (B) The pump power required to achieve population inversion is less than that required for a 3-level laser (C) The pump power required to achieve population inversion is more than that required for a 3-level laser (D) It has two metastable states
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  • Honey mittal thankyou
    option B is the correct answer
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