- #1
cryforhelp104
- 7
- 1
- Homework Statement
- Given the wavelength of the beam of light, and the displacement of one of the mirrors, how would one go about finding the fraction of a period the fringe pattern will move as a result of the mirror displacement?
- Relevant Equations
- Δ𝑑=𝑚(𝜆0/2), I0=2I0 - 2I0 cos (2kdL or 2wt), dL=L1-L2
In a Michelson Interferometer when Mirror 1 is moved a distance Δ𝑑=𝜆0/2Δ, this path difference changes by 𝜆0, and each fringe moves to the position previously occupied by an adjacent fringe. Δ𝑑=𝑚(𝜆0/2)
I also know from the equation for I0=2I0 - 2I0 cos (2kdL or 2wt) that the fringes shift by a phase 2kdL or 2wt(omega tau). I'm unsure what to do , though, given that I am only provided the beam's wavelength and mirror 1's displacement. I'd appreciate any help!
I also know from the equation for I0=2I0 - 2I0 cos (2kdL or 2wt) that the fringes shift by a phase 2kdL or 2wt(omega tau). I'm unsure what to do , though, given that I am only provided the beam's wavelength and mirror 1's displacement. I'd appreciate any help!