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27 Nov 2019
An interferometer is set up to carefully measure changes inlength. The laser source has a wavelenth of 632nm and the arms ofthe device are 11 m long.
a) How much would the phase of light that has traveled one of thepaths have to be to go from perfectly constructive to perfectlydestructive interference?
b) How much of a change in the length of the interferometer armdoes this represent?
c) How much of a travel time difference does this represent?
An interferometer is set up to carefully measure changes inlength. The laser source has a wavelenth of 632nm and the arms ofthe device are 11 m long.
a) How much would the phase of light that has traveled one of thepaths have to be to go from perfectly constructive to perfectlydestructive interference?
b) How much of a change in the length of the interferometer armdoes this represent?
c) How much of a travel time difference does this represent?
