Free electron laser study of the suppression of non-radiative scattering processes in semiconductors

Carl R Pidgeon

doi:10.1016/S1350-4495(99)00014-6

Free electron laser study of the suppression of non-radiative scattering processes in semiconductors

Carl R Pidgeon

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A brief review is given of pump-probe studies of far infrared inter-sub-level relaxation between conduction band states in doped `quasi' quantum dots (created by the application of a magnetic field along the growth direction of an InAs/AlSb quantum well) and of mid-infrared (MIR) interband recombination in narrow gap semiconductors, using the free electron laser at FOM-Rijnhuizen (FELIX). In the former case, the longitudinal optic (LO) phonon scattering rate is shown to be suppressed by a factor of about 100 when the Landau level separation is off-resonance with the optical phonon energy; in the latter case, Auger recombination is shown to be substantially suppressed in the lead salts due to their `mirror' energy band structure.

Original language	English
Pages (from-to)	231-238
Number of pages	8
Journal	Infrared Physics and Technology
Volume	40
Issue number	3
DOIs	https://doi.org/10.1016/S1350-4495(99)00014-6
Publication status	Published - Jun 1999

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title = "Free electron laser study of the suppression of non-radiative scattering processes in semiconductors",

abstract = "A brief review is given of pump-probe studies of far infrared inter-sub-level relaxation between conduction band states in doped `quasi' quantum dots (created by the application of a magnetic field along the growth direction of an InAs/AlSb quantum well) and of mid-infrared (MIR) interband recombination in narrow gap semiconductors, using the free electron laser at FOM-Rijnhuizen (FELIX). In the former case, the longitudinal optic (LO) phonon scattering rate is shown to be suppressed by a factor of about 100 when the Landau level separation is off-resonance with the optical phonon energy; in the latter case, Auger recombination is shown to be substantially suppressed in the lead salts due to their `mirror' energy band structure.",

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AB - A brief review is given of pump-probe studies of far infrared inter-sub-level relaxation between conduction band states in doped `quasi' quantum dots (created by the application of a magnetic field along the growth direction of an InAs/AlSb quantum well) and of mid-infrared (MIR) interband recombination in narrow gap semiconductors, using the free electron laser at FOM-Rijnhuizen (FELIX). In the former case, the longitudinal optic (LO) phonon scattering rate is shown to be suppressed by a factor of about 100 when the Landau level separation is off-resonance with the optical phonon energy; in the latter case, Auger recombination is shown to be substantially suppressed in the lead salts due to their `mirror' energy band structure.

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JO - Infrared Physics and Technology

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ER -

Free electron laser study of the suppression of non-radiative scattering processes in semiconductors

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