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  2. Diffraction from slits - Wikipedia

    en.wikipedia.org/wiki/Diffraction_from_slits

    Because diffraction is the result of addition of all waves (of given wavelength) along all unobstructed paths, the usual procedure is to consider the contribution of an infinitesimally small neighborhood around a certain path (this contribution is usually called a wavelet) and then integrate over all paths (= add all wavelets) from the source to the detector (or given point on a screen).

  3. Talbot effect - Wikipedia

    en.wikipedia.org/wiki/Talbot_effect

    Due to the quantum mechanical wave nature of particles, diffraction effects have also been observed with atoms—effects which are similar to those in the case of light. . Chapman et al. carried out an experiment in which a collimated beam of sodium atoms was passed through two diffraction gratings (the second used as a mask) to observe the Talbot effect and measure the Talbot length

  4. Acousto-optics - Wikipedia

    en.wikipedia.org/wiki/Acousto-optics

    A simple method of modulating the optical beam travelling through the acousto-optic device is done by switching the acoustic field on and off. When off the light beam is undiverted, the intensity of light directed at the Bragg diffraction angle is zero. When switched on and Bragg diffraction occurs, the intensity at the Bragg angle increases.

  5. Francesco Maria Grimaldi - Wikipedia

    en.wikipedia.org/wiki/Francesco_Maria_Grimaldi

    He discovered and was the first to make accurate observations on the diffraction of light [3] [4] (although by some accounts Leonardo da Vinci had earlier noted it [5]), and coined the word 'diffraction'. In his book Physico-Mathesis de Lumine, Coloribus et Iride (1665), he stated the theory of the reconstitution of sunlight from refracted ...

  6. Diffraction grating - Wikipedia

    en.wikipedia.org/wiki/Diffraction_grating

    A blazed diffraction grating reflecting only the green portion of the spectrum from a room's fluorescent lighting. For a diffraction grating, the relationship between the grating spacing (i.e., the distance between adjacent grating grooves or slits), the angle of the wave (light) incidence to the grating, and the diffracted wave from the grating is known as the grating equation.

  7. Kapitsa–Dirac effect - Wikipedia

    en.wikipedia.org/wiki/Kapitsa–Dirac_effect

    Here, the standing wave of light forms the spatially periodic grating that will diffract the matter wave, as we will now explain. The original idea [1] proposes that a beam of electron can be diffracted by a standing wave formed by a superposition of two counterpropagating beams of light. The diffraction is caused by light-matter interaction.

  8. Diffraction - Wikipedia

    en.wikipedia.org/wiki/Diffraction

    The light diffracted by a grating is found by summing the light diffracted from each of the elements, and is essentially a convolution of diffraction and interference patterns. The figure shows the light diffracted by 2-element and 5-element gratings where the grating spacings are the same; it can be seen that the maxima are in the same ...

  9. Babinet's principle - Wikipedia

    en.wikipedia.org/wiki/Babinet's_principle

    This is because the amount of radiation absorbed or reflected is equal to the flux through the particle's cross-section, but by Babinet's principle the light diffracted forward is the same as the light that would pass through a hole in the shape of a particle; so amount of the light diffracted forward also equals the flux through the particle's ...

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