Michelson Interferometer and mirror

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SUMMARY

The discussion focuses on calculating the output intensities of a Michelson interferometer with a semi-transparent mirror characterized by a reflection coefficient R and a transmission coefficient T, where T = 1 - R. The user has determined R = 1/4 and T = 1/2 based on the electric fields of the initial beam. The challenge lies in deriving the equations for the output intensities as a function of the arm length difference, delta_x = x_2 - x_1. Participants are encouraged to provide hints for formulating these equations.

PREREQUISITES
  • Understanding of Michelson interferometer principles
  • Familiarity with reflection and transmission coefficients
  • Knowledge of electric field equations in optics
  • Basic grasp of intensity calculations in wave interference
NEXT STEPS
  • Research the derivation of intensity equations in Michelson interferometers
  • Study the impact of arm length differences on interference patterns
  • Explore the mathematical treatment of electric fields in optical systems
  • Learn about phase shifts in interferometry and their effects on output intensities
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Students and professionals in optics, physicists working with interferometry, and anyone interested in the mathematical modeling of light behavior in optical devices.

doublemint
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Consider a Michelson interferometer with semi-transparent mirror with a reflection coefficient for the intensity, R and transmission of T=1-R. The mirror does not absorb anything.
Calculate the intensities of the light in the two outputs as a function of delta_x = x_2-x_1 which is the difference in arm length.

I sort had an idea..I calculated the reflection and transmission coefficient based on the electric fields of the initial beam and the transmitted and reflected electric fields. (I used general equations used to derive the total intensity of the light from the interferometer)
It turns out it is R=[STRIKE]1/4[/STRIKE] 1/2 and T=[STRIKE]1/2[/STRIKE] 1/2

I tried applying these coefficients to the two electric fields as they transmit and reflect, but I don't know who to get two equations as a function of delta_x...

If anyone has any hints, I would be very grateful!
Thanks
DM
 
Last edited:
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doublemint said:
Consider a Michelson interferometer with semi-transparent mirror with a reflection coefficient for the intensity, R and transmission of T=1-R. The mirror does not absorb anything.
Calculate the intensities of the light in the two outputs as a function of delta_x = x_2-x_1 which is the difference in arm length.

I sort had an idea..I calculated the reflection and transmission coefficient based on the electric fields of the initial beam and the transmitted and reflected electric fields. (I used general equations used to derive the total intensity of the light from the interferometer)
It turns out it is R=[STRIKE]1/4[/STRIKE] 1/2 and T=[STRIKE]1/2[/STRIKE] 1/2

I tried applying these coefficients to the two electric fields as they transmit and reflect, but I don't know who to get two equations as a function of delta_x...

If anyone has any hints, I would be very grateful!
Thanks
DM


Can you give me a hint about your equation for delta_x?
 

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