I Questions about a Laser Interferometer pattern

Click For Summary
An interference pattern can be achieved even if the original laser beam is not split before reuniting, as long as the light maintains coherence. Using two mirrors separated by 2 cm to reflect light from a 500-meter distance can create an interference pattern similar to that of a Michelson interferometer. The pattern will indeed change if one mirror is moved by half a wavelength. The coherence length of a typical laser beam is crucial for this setup, as it determines the maximum distance over which the light waves remain correlated. Overall, careful alignment and control of the mirrors are essential for observing the interference effect.
snuz2001
Messages
17
Reaction score
0
TL;DR
Interference without splitting
Is it possible to get an interference pattern if the original laser beam is not splitted before reunited? Can I use 2 mirrors which will be separated 2 cm from each other and they reflect the light from the incident ray 500 meter far which is then reunited to get an interference pattern on a screen, so if I’ll move one mirror half wave length the interference pattern will change on the screen?
 
Physics news on Phys.org
snuz2001 said:
Can I use 2 mirrors which will be separated 2 cm from each other and they reflect the light from the incident ray 500 meter far
What is the coherence length of a typical laser beam?

https://en.wikipedia.org/wiki/Coherence_length
 
Thread 'Why higher speeds need more power if backward force is the same?'

Thread 'Why higher speeds need more power if backward force is the same?'

Power = Force v Speed Power of my horse = 104kgx9.81m/s^2 x 0.732m/s = 1HP =746W Force/tension in rope stay the same if horse run at 0.73m/s or at 15m/s, so why then horse need to be more powerfull to pull at higher speed even if backward force at him(rope tension) stay the same? I understand that if I increase weight, it is hrader for horse to pull at higher speed because now is backward force increased, but don't understand why is harder to pull at higher speed if weight(backward force)...
View full post »

Similar threads

I Interference by reflection on a CD
  • · Replies 2 ·
Replies
2
Views
1K
I Why do we always see interference pattern in Michelson interferometer?
  • · Replies 9 ·
Replies
9
Views
3K
I Laser interference pattern flickering
  • · Replies 1 ·
Replies
1
Views
2K
A The coherence length is much longer than the manufacturer claims
  • · Replies 10 ·
Replies
10
Views
2K
I Why do orthogonal polarizers at slits eliminate interference pattern?
  • · Replies 28 ·
Replies
28
Views
2K
I Have You Heard of the SEW Experiment? Thoughts?
  • · Replies 3 ·
Replies
3
Views
2K
A Interference pattern for a laser beam through an AOM
  • · Replies 4 ·
Replies
4
Views
4K
I Question about two interference patterns viewed at infinity
  • · Replies 7 ·
Replies
7
Views
2K
I Is it possible for a BBO crystal to produce an interference pattern?
  • · Replies 1 ·
Replies
1
Views
2K
Need some help trying to understand the Michelson interferometer
  • · Replies 1 ·
Replies
1
Views
2K