How to measure temperature with a Michelson interferometer

1. Two plane mirrors are used to produce the optical path difference required for equal thickness or equal inclination interference.

2. A beamsplitter is used to divide the incident laser into two beams to achieve the purpose of amplitude division.

3. The beam expander is used to spread the laser beam apart, so that the interference fringes are easy to observe.

4. Focusing lens, which is used to focus the interference fringes when the interference is equal to inclination.

5. The optical screen is used to undertake interference fringes.

If you want to call up the equitilt interference fringes on the Michelson interferometer, the two mirrors M1 and M2 are required to be parallel to each other, and you can make a mark on the light source during the mediation, and then adjust the inclination coarse adjustment knob and fine adjustment knob behind the two mirrors, so that the reflection image of the marker in the two mirrors coincides in the field of view. This allows you to see the annular isotilt interference fringes.

The Michelson interferometer consists of the following parts.

1.Flat mirrors – used to form a virtual air splitting tip and create optical path differences.

Beam splitter - used to split beams, wavefronts.

3.Beam expander – used to expand the beam for easy observation.

4.Light screen – used to receive diffractive images.

5.Screws, slides, drum wheels, shelves, etc. – for ease of operation.

The Michelson interferometer is the most common type of optical interferometer, and its inventor is the American physicist Albert Abraham Michelson.

Principle: Flat mirror reflection.

Application: Measurement of optical path difference in interference.

The beam falls on the semi-reflector. In the diagram, green light is reflected and red light is refracted Both beams of light shine on a mirror at the same distance as the semi-reflector. Moreover, we know the phase difference between reflected and refracted light.

Be. Therefore, when the two types of reflected light return to the half-mirror again, the crest of one of the waves must fall on the trough of the other. This cancels out the result of the superimposed waves. There are no interfering patterns on the screen.

Gravitational waves are space and time.

on the perturbation. When the interference reaches the interferometer, the length d is asymmetrically varied, so that the peak of one sensitive wave does not fall completely on the trough of the other wave. So we got the interference pattern on the screen.

Michelson spectrophotometer interferometer divides a beam of light into two beams by using a double prism, one of which is reflected back to the main optical path once, and the two beams of light produce a phase difference, thus producing interference. The mirror of the Michelson interferometer can be fine-tuned, and the state of the sharp grinding is best known by observing the fringes, and between the two clearest states (in fact, it is generally taken many times to reduce the error), the distance of the mirror movement*2 is the amount of change in the optical path, and it is also the wavelength. This is the most basic Michelson interferometer, in fact, there are many improved versions now, and the specific problems are analyzed on a case-by-case basis.

I'm talking about the same thickness of the streak, and some of the oblique streaks.