Diffraction formulas for non-monochromatic light are written in the formalism of linear response theory to stress the role of the causality principle. The analysis yields a formula containing a space integral of a time convolution. An example shows when the order of space and time integrations can be exchanged: this is possible only at the end of the optical transient. The system output can then be written as a time function of the space Fresnel or Fourier transform of the input. The white light interferometry experiments (channeled spectra) support the model: they result from it when transients are shorter than the average pulse duration.

Crosta, G. (1978). Light diffraction and the principle of causality. OPTICS COMMUNICATIONS, 25(2), 141-143 [10.1016/0030-4018(78)90292-4].

Light diffraction and the principle of causality

CROSTA, GIOVANNI FRANCO FILIPPO
1978

Abstract

Diffraction formulas for non-monochromatic light are written in the formalism of linear response theory to stress the role of the causality principle. The analysis yields a formula containing a space integral of a time convolution. An example shows when the order of space and time integrations can be exchanged: this is possible only at the end of the optical transient. The system output can then be written as a time function of the space Fresnel or Fourier transform of the input. The white light interferometry experiments (channeled spectra) support the model: they result from it when transients are shorter than the average pulse duration.
Articolo in rivista - Articolo scientifico
Scientifica
linear response theory; transient diffraction; coherence; space-time optics; channeled spectrum
English
141
143
Crosta, G. (1978). Light diffraction and the principle of causality. OPTICS COMMUNICATIONS, 25(2), 141-143 [10.1016/0030-4018(78)90292-4].
Crosta, G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/20118
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