En óptica, un interferómetro de Fabry-Pérot, o Etalon está, normalmente, constituido por una placa con dos superficies reflectantes, o dos espejos paralelos. volo per applicazioni in campo astronomico da satellite. Viene presentato l’ interferometro di. Fabry-Pérot all’interno del quadro degli spettroscopi per uso. Media in category “Fabry-Pérot interferometer”. The following 37 files are in this category, out of 37 total. Airy distribution of a Fabry-Perot.
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Please help improve this article by adding citations to reliable sources. A focusing lens after the pair of flats would produce an inverted image of the source if favry flats were not present; all light emitted from a point on the source is focused to a single point in the system’s image plane.
The underlying Lorentzian lines can be resolved as long as the Taylor criterion is obeyed see figure “The physical meaning of the Lorentzian finesse”. For the reference standard, see Standard metrology. The total amplitude of both beams will be the sum of the amplitudes of the two beams measured along a line perpendicular to the direction of the beam. Active pixel sensor Angle—sensitive pixel Back-illuminated sensor Charge-coupled device Contact image sensor Electro-optical sensor Flame detector Infrared Intdrferometro inductance detector LED as light sensor Light-addressable potentiometric sensor Nichols radiometer Optical fiber Photodetector Photodiode Photoelectric sensor Photoionization detector Photomultiplier Photoresistor Photoswitch Phototransistor Phototube Position sensitive device Scintillometer Shack—Hartmann wavefront sensor Single-photon avalanche diode Superconducting nanowire single-photon detector Transition edge sensor Tristimulus colorimeter Visible-light photon counter Wavefront sensor.
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Geophone Hydrophone Microphone Seismometer. The limiting case occurs at. In contrast to the exact solution above, it leads to. It is displayed as the blue line in the figure “The physical meaning of the Lorentzian finesse”. Therefore, the Airy interffrometro becomes the underlying fundamental function and the measurement delivers a sum of Airy distributions.
The field transmitted after the first propagation and the smaller and smaller fields transmitted after each consecutive propagation through the resonator are. Resonances occur at frequencies at which light exhibits constructive interference after one round trip.
If the transmitted beams are out-of-phase, destructive interference occurs and this corresponds interfefometro a transmission minimum. Each mode has a normalized spectral line shape imterferometro unit frequency interval given by. Etalons with high finesse show sharper transmission peaks with lower minimum transmission coefficients. Retrieved from ” https: Unsourced material may be challenged and removed.
Interferometro de Fabry-Perot
Interferômetro de Fabry-Pérot
Therefore, an often tabry Airy distribution is . Constructive interference occurs if the transmitted beams are in phaseand this corresponds to a high-transmission peak of the etalon.
The stored, transmitted, and reflected light is spectrally modified compared to the incident light. The sharpness of the rings depends on the reflectivity of the flats. Whereas the photon decay time is still a well-defined quantity, the linewidth loses its meaning, because it resembles a spectral bandwidth, whose value now changes interferomegro that very bandwidth. CS1 French-language sources fr Articles needing additional references from May All articles needing additional references Articles needing additional references from October May Learn how and when to remove this template message.
Since it is interference that modifies the spectral contents, the spectral intensity distribution inside the resonator would be the same as the incident spectral intensity distribution, and no resonance enhancement would occur inside the resonator.
The maximum reflectivity is given by:. Once the internal resonance enhancement, the generic Airy distribution, is established, all other Airy distributions can be deduced by simple scaling factors. To within a constant multiplicative phase factor, the amplitude of the m th transmitted beam can be written as:. In the oblique incidence case, the finesse will depend on the polarization state of the beam, since the value of “R”, given by the Fresnel equationsis generally different for p and s polarizations.
The measurable case of the intensity resulting from the interference of both backward-propagating electric fields results in the Airy distribution . Physically, the Airy distribution is the sum of mode profiles of the longitudinal resonator modes. The amplitude can be rewritten as. This definition of the Airy finesse is consistent with the Taylor criterion of the resolution of a spectrometer. The intensity of the beam will be just t times its complex conjugate.
The series is a geometric series whose sum can be expressed analytically. A related device fabrry the Gires—Tournois etalon. Dw the ray passes through the paired flats, it is multiply reflected to produce multiple transmitted rays which are collected by the focusing lens and brought to point A’ on the screen.
At point fabdy the transmitted amplitude will be. Precisely, the former is an etalon and the latter is an interferometerbut the terminology is often used inconsistently.
In the derivation below, n is the index of refraction inside the etalon, and n 0 is that outside intfrferometro etalon. Optical Physics 3rd ed.
The phase difference between each successive transmitted pair i. Also in this case each Airy distribution is the sum of all underlying mode profiles which can be interfwrometro distorted.
From Wikipedia, the free encyclopedia. The varying transmission function of an etalon is caused by interference between the multiple reflections of light between the two reflecting surfaces.
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Diode Lasers and Photonic Integrated Circuits 2nd ed. At the point where.