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4篇 您的检索式:作者名="SpringThorpe A J"
    题名 作者 年代 出处 被引量
1Terahertz Semiconductor Quantum Well Devices显示文摘For eventually providing terahertz science with compact and convenient devices,terahertz (1~10THz) quantum-well photodetectors and quantum-cascade lasers are investigated.The design and projected detector performance are presented together with experimental results for several test devices,all working at photon energies below and around optical phonons.Background limited infrared performance (BLIP) operations are observed for all samples (three in total),designed for different wavelengths.BLIP temperatures of 17,13,and 12K are achieved for peak detection frequencies of 9.7THz(31μm),5.4THz(56μm),and 3.2THz(93μm),respectively.A set of THz quantum-cascade lasers with identical device parameters except for doping concentration is studied.The δ-doping density for each period varies from 3.2×1010 to 4.8×1010cm-2.We observe that the lasing threshold current density increases monotonically with doping concentration.Moreover,the measurements for devices with different cavity lengths provide evidence that the free carrier absorption causes the waveguide loss also to increase monotonically.Interestingly the observed maximum lasing temperature is best at a doping density of 3.6×1010cm-2.Liu H C Luo H Ban D Waichter M Song C Y Wasilewski Z R Buchanan M Aers G C SpringThorpe A J Cao J C Feng S L Williams B S Hu Q 2006Journal of Semiconductors2006,27,4:2
2Impact of changing societal trends on the spread of infectious in American and Canadian homes 显示文摘SATTAR S A TETRO J SPRINGTHORPE V S 1999American Journal of Infection Control1999,27,6:1
3The influence of temperature on Norovirus inactivation by monochloramine in Potable Waters: testing with routine norovirus as a surrogate for human norovirus显示文摘KELLER R TETRO J A SPRINGTHORPE V S 2010Food Environ Viro12010,2,:1
4Terahertz quantum-well photodetector 显示文摘Liu H C Song C Y SpringThorpe A J 2004Applied Physics Letters2004,84,20:1
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