A semiconductor laser crystal of length 5 cm, refractive index 1.8 is – McqOptions

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1.	A semiconductor laser crystal of length 5 cm, refractive index 1.8 is used as an optical source. Determine the frequency separation of the modes.
A.	2.8 ghz
B.	1.2 ghz
C.	1.6 ghz
D.	2 ghz
Answer» D. 2 ghz

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