All Questions
Tagged with optics interferometry
51
questions with no upvoted or accepted answers
4
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0
answers
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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
3
votes
0
answers
121
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How does the quality of the reflected light compare to the emitted light? And how do I manage this (reflected) light quality well?
I am designing an interferometer for an experiment. The setup consists of (1) the laser source, (2) the interferometer itself (consisting of optical components and photodetector(s)), and (3) the ...
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3
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25
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Maintaining phase relationships and other general principles of interferometry
I have a few confusions with some basic principles of interferometry.
Bob Campbell's So you want to do VLBI writes:
Phase relationships among all points on the wavefront will be
preserved ...
- 3,200
3
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110
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SHS Interferometer and diffraction limit
I'm currently researching Spatial Heterodyned Spectrometers (SHS) and I'm a bit at a loss understanding the influence of the diffraction limit.
I'll be measuring a diffuse visible light source with ...
- 131
2
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25
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How to model the effects of diffraction for a convex lens?
I am using a convex lens in a wavefront-measuring interferometer for testing microscope objectives, where the lens images the exit-pupil of the objective onto my camera. It is my understanding that ...
- 31
2
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399
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Phase shifts in different beam splitter designs
I am trying to understand how a Mach-Zehnder interferometer works. It seems that it will work whether we use two beam splitters that consist of either
glass prisms glued together
a sheet of glass ...
- 21
2
votes
0
answers
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 ...
- 1,047
2
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0
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479
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Why is the Fabry-Perot more accurate than Michelson?
Why is the Fabry-Perot Interferometer on Na-lamp more accurate than Michelson Interferometer also on Na-lamp by counting the fringes of a circular pattern?
- 141
2
votes
1
answer
300
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Can we tune the Mach-Zehnder modulator or equally mix it with a pure RGB laser signal with a broadband optical source at the same efficiency?
I would like to find out if a dual-parallel Mach-Zehnder modulator with either 1) fixed optical path lengths or 2) variable optical path lengths commensurate with today's announcement by a team of ...
- 347
2
votes
0
answers
76
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Multi-directional ether
In the Michelson-Morley experiment,the two beams of light should be directed at right angles in order to test the existence of ether, but that postulate is based on the prediction that ether has only ...
user65035
2
votes
0
answers
173
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How accurately do Airy discs need to be superimposed in an optical interferometer to create fringes?
In an astronomical optical interferometer, what is the largest amount of error in the alignment of the Airy disks of point source star images from different arms of the interferometer that will still ...
- 29
1
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30
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Are there any commercially made optical fibers which are made specifically to have very low microphonic properties for application in interferometry
Are there any commercially made optical fibers which are made specifically to have very low microphonic properties for applications in interferometry. While building a fiber optic interferometer I ...
- 240
1
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answers
44
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Confused about the principle Of Michelson Interferometer
Consider the figure that I found from an answer here:
Michelson interferometer circular fringes
Now the path difference in the image in clearly
$$\Delta d= 2d cos\theta$$
and I know a phase ...
- 23
1
vote
0
answers
47
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Double slit with off centre source, where does phase difference occur?
I am currently working through the following problem for my optics class. The setup as shown below is composed of a double slit sandwiched between two convergent lenses L1 and L2. A point source is ...
1
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0
answers
36
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Which method of laser diode operation is less likely to cause mode hopping: constant current or constant power?
If a laser diode is uncolled and operates in a CW mode then which method of operation is less likely to cause mode hopping: constant current or constant power?
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