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Supertramp19
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Homework Statement
Monochromatic light (λ = 500 nm) from a particular light source has a frequency
bandwidth Δν = 6 x 1011 Hz.
(a) What is the coherence length Δx and the coherence time Δt of this light?
(b) What is approximately the largest optical path length difference in an
interference experiment with this light, which would still give you observable
interference fringes? Make a sketch of such an experiment.
Homework Equations
Coherence length: Δx= cΔt
Δt=1/Δv
Path Difference: Δ=mλ=asinθ
The Attempt at a Solution
So, I figured out that Δx=5*10^-4 m and Δt=1.66*10^-12 s. I don't really know how to use these to find the largest optical path length. I have the equation, λ... What else do I need to figure out. Would I be using Young's Double Slit Experiment? Thanks for the help. :)