Publication

Resonant Rayleigh scattering versus incoherent luminescence in semiconductor microcavities

Romuald Houdré, Benoît Marie Joseph Deveaud, Ursula Oesterle, Stefan Haacke
1998
Journal Articles

Abstract

It is demonstrated that during the first few picoseconds after resonant femtosecond excitation the secondary radiation from a strongly coupled semiconductor microcavity containing one quantum well is dominated by Rayleigh scattered light. At early times after excitation (10 ps) the lower polariton branch provides the most intense emission which is due to incoherent luminescence. The results in the Ray leigh scattering regime are shown to be in excellent agreement with a theoretical model of coherence transfer due to interface roughness. [S0163-1829(98)52940-2].

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https://infoscience.epfl.ch/entities/publication/f859f11c-6d46-4138-95d7-1dbc71104170

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Romuald Houdré, Benoît Marie Joseph Deveaud, Ursula Oesterle, Stefan Haacke
1998
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f859f11c-6d46-4138-95d7-1dbc71104170

About this result

Related concepts (32)

Ionizing radiation

Ionizing radiation (or ionising radiation), including nuclear radiation, consists of subatomic particles or electromagnetic waves that have sufficient energy to ionize atoms or molecules by detaching electrons from them. Some particles can travel up to 99% of the speed of light, and the electromagnetic waves are on the high-energy portion of the electromagnetic spectrum. Gamma rays, X-rays, and the higher energy ultraviolet part of the electromagnetic spectrum are ionizing radiation, whereas the lower energy ultraviolet, visible light, nearly all types of laser light, infrared, microwaves, and radio waves are non-ionizing radiation.

Rayleigh scattering

Rayleigh scattering (ˈreɪli ), named after the 19th-century British physicist Lord Rayleigh (John William Strutt), is the predominantly elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. For light frequencies well below the resonance frequency of the scattering particle (normal dispersion regime), the amount of scattering is inversely proportional to the fourth power of the wavelength. Rayleigh scattering results from the electric polarizability of the particles.

Radiation protection

Radiation protection, also known as radiological protection, is defined by the International Atomic Energy Agency (IAEA) as "The protection of people from harmful effects of exposure to ionizing radiation, and the means for achieving this". Exposure can be from a source of radiation external to the human body or due to internal irradiation caused by the ingestion of radioactive contamination. Ionizing radiation is widely used in industry and medicine, and can present a significant health hazard by causing microscopic damage to living tissue.

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Resonant Rayleigh scattering versus incoherent luminescence in semiconductor microcavities

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