All Questions
Tagged with optics interferometry
161
questions
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575
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How does beam shape (elliptical vs circular/Gaussian) affect interferometry?
I want to understand the importance of beam quality to interferometer systems. This article says the following:
A very high (close to diffraction-limited) beam quality, associated with a high spatial ...
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1
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1
answer
354
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How does the effective focal length work for aspheric lenses? How should I select an aspheric lens?
I am currently looking at aspheric lenses on Thorlabs. I want to use them as a collimation optic for my interferometry experiment. Note that the lenses have a listed EFL (effective focal length). But ...
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2
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3
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381
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Do interferometers require polarizing beam splitters, or do they require non-polarizing beam splitters?
I want to build an interferometer. In order to do so, I need to buy some optical components, such as beam splitter cubes. These beam splitter cubes, and other optical components, come in a polarizing ...
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1
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1
answer
25
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Interferometry: effect of aspheric lens on self-mixing effect
I want to perform self-mixing interferometry experiments using a laser diode, as was done here. I'm going to use a low-power laser diode. However, I want to improve the performance of the device, ...
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1
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2
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What is 'optical phaseshift'?
In interferometry, it is said that lasers can be used to measure the 'optical phaseshift' of something. I am familiar with the concept of phase in the context of waves, but I don't understand exactly ...
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3
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279
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Could the Michelson-Morley experiment have detected gravitational waves?
If everything went perfectly and they had no outside noise while conducting the experiment, could they have detected gravitational waves? What would it have looked like to them?
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1
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84
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Mach Zehnder classical output [closed]
$E_{0}$ is input to the first beam splitter
and the output from the first beam splitter:
$|E_{0}|^2=|E_{1}|^2+|E_{2}|^2$
$E_{1} = \frac{E_{0}}{\sqrt{2}}\;sin( \omega t - kx)$
$E_{2} = \frac{E_{0}}{\...
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1
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284
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Mach-Zehnder interferometer classical field [closed]
I knew that
$$I \propto |E|^2$$
I wanted to calculate intensity on detector 1 and detector 2 in Mach-Zehnder interferometer.
One path have electric field $E_{1}$ and the second $E_{2}$. Its splits in ...
0
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1
answer
118
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Bragg and Raman beam splitters
In atom interferometry, what is the difference between Bragg and Raman beam splitter operations?
When reading articles on atom interferometry I am finding statements such as `using a Raman/Bragg beam ...
- 1,816
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3
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3k
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Why is it harder to use a white light source in a Michelson Interferometer?
In a Michelson Interferometer, a light beam is split into 2 different beams that travel different optical paths, through the "arms" of the interferometer. Then, they are reflected and, ...
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115
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How is the phase gain of a Fabry-Perot resonator for gravitational wave detection derived?
I am trying to understand the use of the Fabry-Perot (FP) resonator in the arms of a gravitational wave detector. A typical explanation is that the gain in power in the arms is equal to $\sqrt{F}$ (...
- 133k
2
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0
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65
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Infinite sum of transmitted parallel light fields
I'm currently studying
optics and came across the possibility of retrieving the original electric (light field) from a pair of partially reflecting mirrors, but I am confused by several ...
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18
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2
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2k
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How does LIGO work?
LIGO is described as working as an interferometer, like a Michelson-Morley interferometer but with many reflections along the arms to increase the sensitivity. In MMs work it was assumed that the ...
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1
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1
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107
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Obtain clear fringes from interferometer
I have just begun setting up an interferometer to take some measurements. I am trying to reproduce one paper I found in literature for 3 DoF homodyne interferometry. The detector is merly a CMOS ...
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2
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809
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Circular fringes in Michelson interferometer
The rays reflected by mirrors M1 and M2 meet at the glass G. For each ray(specifically 1 and 2 in the figure which may go on 1,2,3... for an extended object as is required for the experiment) as the ...
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