M. Johnston, A. Dowd, D. Whittaker, A. Corchia, A. Davies, E. Linfield
{"title":"半导体表面太赫兹辐射的增强","authors":"M. Johnston, A. Dowd, D. Whittaker, A. Corchia, A. Davies, E. Linfield","doi":"10.1109/THZ.2002.1037586","DOIUrl":null,"url":null,"abstract":"We have studied the generation of coherent pulses of terahertz (THz) radiation from semiconductor surfaces both experimentally and using a Monte-Carlo carrier dynamics simulation. Collimated THz beams are observed from surface-field THz emitters and three methods of improving the efficiency of these emitters are demonstrated: (i) by applying a magnetic field, (ii) by reducing the effective refractive index of the device and (iii) by altering the geometry of the device. An enhancement of 21/spl times/ is seen in a prism based GaAs/InAs THz emitter.","PeriodicalId":143116,"journal":{"name":"Proceedings, IEEE Tenth International Conference on Terahertz Electronics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Enhancement of THz emission from semiconductor surfaces\",\"authors\":\"M. Johnston, A. Dowd, D. Whittaker, A. Corchia, A. Davies, E. Linfield\",\"doi\":\"10.1109/THZ.2002.1037586\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We have studied the generation of coherent pulses of terahertz (THz) radiation from semiconductor surfaces both experimentally and using a Monte-Carlo carrier dynamics simulation. Collimated THz beams are observed from surface-field THz emitters and three methods of improving the efficiency of these emitters are demonstrated: (i) by applying a magnetic field, (ii) by reducing the effective refractive index of the device and (iii) by altering the geometry of the device. An enhancement of 21/spl times/ is seen in a prism based GaAs/InAs THz emitter.\",\"PeriodicalId\":143116,\"journal\":{\"name\":\"Proceedings, IEEE Tenth International Conference on Terahertz Electronics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings, IEEE Tenth International Conference on Terahertz Electronics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/THZ.2002.1037586\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings, IEEE Tenth International Conference on Terahertz Electronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/THZ.2002.1037586","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Enhancement of THz emission from semiconductor surfaces
We have studied the generation of coherent pulses of terahertz (THz) radiation from semiconductor surfaces both experimentally and using a Monte-Carlo carrier dynamics simulation. Collimated THz beams are observed from surface-field THz emitters and three methods of improving the efficiency of these emitters are demonstrated: (i) by applying a magnetic field, (ii) by reducing the effective refractive index of the device and (iii) by altering the geometry of the device. An enhancement of 21/spl times/ is seen in a prism based GaAs/InAs THz emitter.
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