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Considering the values given below, calculate the mode separation in terms of free space wavelength for a laser. (Frequency separation = 2GHz, Wavelength = 0.5 μm)

Considering the values given below, calculate the mode separation in terms of free space wavelength for a laser. (Frequency separation = 2GHz, Wavelength = 0.5 μm) Correct Answer 1.6×10-12

The mode separation in terms of free space wavelength is given by- δλ = λ2/c δf Where δf = frequency separation λ = wavelength c = velocity of light.

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