- Michelson interferometers use optical path differences between optical paths L1 and L2 in the figure.
- With the same lengths of L1 and L2 and an optical path difference, a circular interference fringe moves to indicate optical path differences of 1/4 wavelength.
- Has a wide range of applications, including measurement of microscopic length, light wavelength, and wavelength ratio, refractive index, dispersion, surface roughness, and thin films.
|
Symbol |
Component |
Quantity |
|
L |
Laser |
1 |
|
SF |
Spatial filter |
1 |
|
CL |
Collimator lens |
1 |
|
BS |
Beam splitter |
1 | |
|
