{"title":"Effects Of Modulation Doping On Intersubband Relaxation By Polar Optical Phonons In Multiple Quantum Well Structures","authors":"J. Educato, A. Sugg, J. Leburton","doi":"10.1364/qwoe.1989.wb5","DOIUrl":null,"url":null,"abstract":"Recently, intersubband relaxation in modulation doped GaAs/Al\n x\n Ga\n 1−x\n As multiple quantum well structures (MDMQWS) has been observed directly by an infrared bleaching technique [1,2]. The intersubband time constants determined experimentally are surprisingly long (≈ 10 ps). But, as well width increases, electron lifetimes decrease. A well width change from 47 Å to 59 Å results in approximately a factor of two decrease in relaxation time.","PeriodicalId":205579,"journal":{"name":"Quantum Wells for Optics and Optoelectronics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Quantum Wells for Optics and Optoelectronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/qwoe.1989.wb5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Recently, intersubband relaxation in modulation doped GaAs/Al
x
Ga
1−x
As multiple quantum well structures (MDMQWS) has been observed directly by an infrared bleaching technique [1,2]. The intersubband time constants determined experimentally are surprisingly long (≈ 10 ps). But, as well width increases, electron lifetimes decrease. A well width change from 47 Å to 59 Å results in approximately a factor of two decrease in relaxation time.
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