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- Franz–Keldysh_effect abstract "The Franz–Keldysh effect is a change in optical absorption by a semiconductor when an electric field is applied. The effect is named after the German physicist Walter Franz and Russian physicist Leonid Keldysh (nephew of Mstislav Keldysh).Karl W. Böer observed first the shift of the optical absorption edge with electric fields during the discovery of high-field domains and named this the Franz-effect. A few months later, when the English translation of the Keldysh paper became available, he corrected this to the Franz–Keldysh effect.As originally conceived, the Franz–Keldysh effect is the result of wavefunctions "leaking" into the band gap. When an electric field is applied, the electron and hole wavefunctions become Airy functions rather than plane waves. The Airy function includes a "tail" which extends into the classically forbidden band gap. According to Fermi's Golden Rule, the more overlap there is between the wavefunctions of a free electron and a hole, the stronger the optical absorption will be. The Airy tails slightly overlap even if the electron and hole are at slightly different potentials (slightly different physical locations along the field). The absorption spectrum now includes a tail at energies below the band gap and some oscillations above it. This explanation does, however, omit the effects of excitons, which may dominate optical properties near the band gap.The Franz–Keldysh effect occurs in uniform, bulk semiconductors, unlike the quantum confined Stark effect, which requires a quantum well. Both are used for Electro-absorption modulators. The Franz–Keldysh effect usually requires hundreds of volts, limiting its usefulness with conventional electronics – although this is not the case for commercially available Franz–Keldysh-effect electro-absorption modulators that use a waveguide geometry to guide the optical carrier.".
- Franz–Keldysh_effect wikiPageID "4204003".
- Franz–Keldysh_effect wikiPageLength "11799".
- Franz–Keldysh_effect wikiPageOutDegree "39".
- Franz–Keldysh_effect wikiPageRevisionID "667996315".
- Franz–Keldysh_effect wikiPageWikiLink Absorption_(electromagnetic_radiation).
- Franz–Keldysh_effect wikiPageWikiLink Absorption_coefficient.
- Franz–Keldysh_effect wikiPageWikiLink Airy_function.
- Franz–Keldysh_effect wikiPageWikiLink Attenuation_coefficient.
- Franz–Keldysh_effect wikiPageWikiLink Bloch_wave.
- Franz–Keldysh_effect wikiPageWikiLink Category:Electronic_engineering.
- Franz–Keldysh_effect wikiPageWikiLink Category:Optoelectronics.
- Franz–Keldysh_effect wikiPageWikiLink Conduction_band.
- Franz–Keldysh_effect wikiPageWikiLink Density_of_states.
- Franz–Keldysh_effect wikiPageWikiLink Dielectric_constant.
- Franz–Keldysh_effect wikiPageWikiLink Dielectric_function.
- Franz–Keldysh_effect wikiPageWikiLink Effective_mass_(solid-state_physics).
- Franz–Keldysh_effect wikiPageWikiLink Electric_field.
- Franz–Keldysh_effect wikiPageWikiLink Electro-absorption_modulator.
- Franz–Keldysh_effect wikiPageWikiLink Electromagnetic_radiation.
- Franz–Keldysh_effect wikiPageWikiLink Electron.
- Franz–Keldysh_effect wikiPageWikiLink Electron_hole.
- Franz–Keldysh_effect wikiPageWikiLink Exciton.
- Franz–Keldysh_effect wikiPageWikiLink Fermis_Golden_Rule.
- Franz–Keldysh_effect wikiPageWikiLink Fermis_golden_rule.
- Franz–Keldysh_effect wikiPageWikiLink Fourier_transform.
- Franz–Keldysh_effect wikiPageWikiLink Hydrogen_atom.
- Franz–Keldysh_effect wikiPageWikiLink Kinematics.
- Franz–Keldysh_effect wikiPageWikiLink Leonid_Keldysh.
- Franz–Keldysh_effect wikiPageWikiLink Mstislav_Keldysh.
- Franz–Keldysh_effect wikiPageWikiLink Optical_absorption.
- Franz–Keldysh_effect wikiPageWikiLink Perfect_crystal.
- Franz–Keldysh_effect wikiPageWikiLink Permittivity.
- Franz–Keldysh_effect wikiPageWikiLink Photon.
- Franz–Keldysh_effect wikiPageWikiLink Quantum.
- Franz–Keldysh_effect wikiPageWikiLink Ray_(optics).
- Franz–Keldysh_effect wikiPageWikiLink Relative_permittivity.
- Franz–Keldysh_effect wikiPageWikiLink Semiconductor.
- Franz–Keldysh_effect wikiPageWikiLink Stark_effect.
- Franz–Keldysh_effect wikiPageWikiLink Unit_vector.
- Franz–Keldysh_effect wikiPageWikiLink Valence_and_conduction_bands.
- Franz–Keldysh_effect wikiPageWikiLink Valence_band.
- Franz–Keldysh_effect wikiPageWikiLink Vector_field.
- Franz–Keldysh_effect wikiPageWikiLink Volt.
- Franz–Keldysh_effect wikiPageWikiLink Walter_Franz.
- Franz–Keldysh_effect wikiPageWikiLink Wave_function.
- Franz–Keldysh_effect wikiPageWikiLink Wave_vector.
- Franz–Keldysh_effect wikiPageWikiLink Wavefunction.
- Franz–Keldysh_effect wikiPageWikiLinkText "Franz–Keldysh effect".
- Franz–Keldysh_effect hasPhotoCollection Franz–Keldysh_effect.
- Franz–Keldysh_effect wikiPageUsesTemplate Template:More_footnotes.
- Franz–Keldysh_effect wikiPageUsesTemplate Template:Reflist.
- Franz–Keldysh_effect subject Category:Electronic_engineering.
- Franz–Keldysh_effect subject Category:Optoelectronics.
- Franz–Keldysh_effect comment "The Franz–Keldysh effect is a change in optical absorption by a semiconductor when an electric field is applied. The effect is named after the German physicist Walter Franz and Russian physicist Leonid Keldysh (nephew of Mstislav Keldysh).Karl W. Böer observed first the shift of the optical absorption edge with electric fields during the discovery of high-field domains and named this the Franz-effect.".
- Franz–Keldysh_effect label "Franz–Keldysh effect".
- Franz–Keldysh_effect sameAs Franz-Keldysh-Effekt.
- Franz–Keldysh_effect sameAs フランツ・ケルディシュ効果.
- Franz–Keldysh_effect sameAs m.0bpt7z.
- Franz–Keldysh_effect sameAs Эффект_Франца_—_Келдыша.
- Franz–Keldysh_effect sameAs Ефект_Франца-Келдиша.
- Franz–Keldysh_effect sameAs Q1445884.
- Franz–Keldysh_effect sameAs Q1445884.
- Franz–Keldysh_effect sameAs 法兰兹-卡尔迪西效应.
- Franz–Keldysh_effect wasDerivedFrom Franz–Keldysh_effect?oldid=667996315.
- Franz–Keldysh_effect isPrimaryTopicOf Franz–Keldysh_effect.