Q56
When the refractive index of the active medium changes by in a laser resonator of length L, the change in the spectral spacing between the longitudinal modes of the laser is (c is the speed of light in free space)
When the refractive index of the active medium changes by in a laser resonator of length L, the change in the spectral spacing between the longitudinal modes of the laser is (c is the speed of light in free space)
A.
B.
C.
Answer
D.
zero
Answer: Option C
Solution
Answer: Option C
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