All Questions
Tagged with photonics interference
8
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Why do two-beam interferometers have a relatively broad "fringe width" compared to single-beam interferometers?
I recently overheard someone discussing the basics of interferometry setups. They said that two-beam interferometers have a relatively broad "fringe width" compared to single-beam ...
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Is spatial coherence more important for interferometry, or is temporal coherence more important for interferometry?
I am currently going back through my textbook Laser Systems Engineering by Keith Kasunic. Chapter 1.2 Laser Engineering says the following:
One of the primary goals of laser engineering is to meet ...
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What photodetector parameters should I be focusing on, and in what priority, to maximise the performance of such an interferometer?
I'm trying to select a photodetector for an interferometry experiment. The interferometer will be trying to measure subtle vibrations occurring at a relatively high frequency (high kHz to low MHz). It ...
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About two photon interference in nanophotonics
Within the standard model, photons are point particles, i.e., with no spatial distribution.
On the other hand, classical electromagnetic modes have field distributions.
Suppose there are two different ...
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Will the Airy pattern be preserved for high numerical aperture lens?
All we know that a lens focuses a plane wave into an Airy pattern distribution. However, what if the numerical aperture ($NA$) will be very high, like more than $0.99$ (in the air) or with focusing ...
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If the illuminating source is monochromatic, will result in a series of alternating light and dark bands of gradually changing intensity on the screen
I am currently studying Modern Optical Engineering, fourth edition, by Warren Smith. Chapter 1 presents the following diagram and explanation when discussing interference and diffraction:
If the ...
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A simple thin-film transmittance calculation problem
I am trying to reproduce results of thin-film transmittance given in this article by using this online thin-film calculator tool (www.filmetrics.com). I would like to use the calculator later for more ...
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Distorsion in Photoluminescence
I am studying photoluminescence, but I do not understand why during measurement it turns out that the signal is distorted due to appearance of a long-wavelength replica of the fundamental laser ...
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