Physics / advanced
Coherence and modern imaging
Connect optical coherence and transfer functions to interferometry, holography, nonlinear optics, and realistic limits of image reconstruction.
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Module 01 advanced
Coherence and modern imaging
Connect optical coherence and transfer functions to interferometry, holography, nonlinear optics, and realistic limits of image reconstruction.
- 01
Temporal coherence depends on the whole spectrum
Relate time-delay correlations to spectral shape and specify a coherence-width convention.
28 min - 02
Spatial coherence encodes angular source size
Derive a far-field visibility function from an incoherent source brightness distribution.
28 min - 03
Michelson fringes measure doubled paths
Relate mirror motion to optical delay and identify where different fringe families are observed.
28 min - 04
A point response becomes a contrast transfer rule
Connect an incoherent intensity PSF to a normalized OTF and a measurable sinusoidal contrast.
28 min - 05
Coherence decides whether amplitudes or intensities add
Compare field-linear and intensity-linear imaging without confusing their transfer functions.
28 min - 06
A reference beam makes phase observable
Recover a complex field from calibrated reference interference and distinguish recording from reconstruction.
28 min - 07
Intensity data leave phase ambiguities
Identify what Fourier intensity determines and what reconstruction constraints must add.
28 min - 08
Nonlinear polarization creates new optical frequencies
Expand a material response, track real-field amplitude conventions, and derive a second harmonic.
28 min - 09
Phase matching lets weak sources build coherently
Derive the finite-length sinc factor and distinguish energy matching from momentum matching.
28 min - 10
Periodic dielectrics create optical stop bands
Use Bloch modes and a bilayer transfer relation to diagnose a directional band gap.
28 min