enow.com Web Search

  1. Ad

    related to: optical beam modulator

Search results

  1. Results from the WOW.Com Content Network
  2. Optical modulator - Wikipedia

    en.wikipedia.org/wiki/Optical_modulator

    An optical modulator is a device which is used to modulate a beam of light. The beam may be carried over free space, or propagated through an optical waveguide (optical fibre). Depending on the parameter of a light beam which is manipulated, modulators may be categorized into amplitude modulators, phase modulators, polarization modulators, etc.

  3. Electro-optic modulator - Wikipedia

    en.wikipedia.org/wiki/Electro-optic_modulator

    An electro-optic modulator (EOM) is an optical device in which a signal-controlled element exhibiting an electro-optic effect is used to modulate a beam of light. The modulation may be imposed on the phase, frequency, amplitude, or polarization of the beam. Modulation bandwidths extending into the gigahertz range are possible with the use of ...

  4. Acousto-optic modulator - Wikipedia

    en.wikipedia.org/wiki/Acousto-optic_modulator

    Acousto-optic modulators are much faster than typical mechanical devices such as tiltable mirrors. The time it takes an AOM to shift the exiting beam in is roughly limited to the transit time of the sound wave across the beam (typically 5 to 100 ns). This is fast enough to create active modelocking in an ultrafast laser.

  5. Optical modulators using semiconductor nano-structures

    en.wikipedia.org/wiki/Optical_modulators_using...

    An optical modulator is an optical device which is used to modulate a beam of light with a perturbation device. It is a kind of transmitter to convert information to optical binary signal through optical fiber (optical waveguide) or transmission medium of optical frequency in fiber optic communication.

  6. Spatial light modulator - Wikipedia

    en.wikipedia.org/wiki/Spatial_light_modulator

    A spatial light modulator (SLM) is a device that can control the intensity, phase, or polarization of light in a spatially varying manner. A simple example is an overhead projector transparency . Usually when the term SLM is used, it means that the transparency can be controlled by a computer .

  7. Orbital angular momentum of light - Wikipedia

    en.wikipedia.org/wiki/Orbital_angular_momentum...

    If one chooses the origin at the beam axis and the beam is cylindrically symmetric (at least in its momentum distribution), the external angular momentum will vanish. The external angular momentum is a form of OAM, because it is unrelated to polarization and depends on the spatial distribution of the optical field (E).

  8. Acousto-optics - Wikipedia

    en.wikipedia.org/wiki/Acousto-optics

    An acousto-optic modulator. By varying the parameters of the acoustic wave, including the amplitude, phase, frequency and polarization, properties of the optical wave may be modulated. The acousto-optic interaction also makes it possible to modulate the optical beam by both temporal and spatial modulation.

  9. Electro-absorption modulator - Wikipedia

    en.wikipedia.org/wiki/Electro-absorption_modulator

    An electro-absorption modulator (EAM) is a semiconductor device which can be used for modulating the intensity of a laser beam via an electric voltage. Its principle of operation is based on the Franz–Keldysh effect, i.e., a change in the absorption spectrum caused by an applied electric field, which changes the bandgap energy (thus the photon energy of an absorption edge) but usually does ...

  1. Ad

    related to: optical beam modulator