典型文献
Spatial coherence of electrically pumped random terahertz lasers
文献摘要：
Light sources with high radiance and tailored coherence properties are highly desirable for imaging applications in the mid-infrared and terahertz(THz)spectral regions,which host a large variety of molecular absorptions and distinctive fingerprints to be exploited for sensing and tomography.Here,we characterize the spatial coherence of random multimode THz quantum cascade lasers(QCLs)emitting＞mW optical power per mode and showing low divergence(10°-30°),performing a modified Young's double-slit experiment.Partial spatial coherence values ranging between 0.16 and 0.34 are retrieved,depending on the specific degree of disorder.These values are sig-nificantly lower than those(0.82)of conventional Fabry-Perot THz QCLs exploiting an identical active region quantum design.We then incorporate the devised low spatial coherence random lasers into a confocal imaging system with micrometer spatial resolution and demonstrate notable imaging performances,at THz frequencies,against spatial cross talk and speckles.
文献关键词：
中图分类号：
作者姓名：
EVA A.A.POGNA;ALESSANDRA DI GASPARE;KIMBERLY REICHEL;CHIARA LIBERATORE;HARVEY E.BEERE;DAVID A.RITCHIE;MIRIAM S.VITIELLO
作者机构：
NEST CNR-Istituto Nanoscienze—Scuola Normale Superiore,56127 Pisa,Italy;Cavendish Laboratory,University of Cambridge,Cambridge CB3 0HE,UK
文献出处：
引用格式：
[1]EVA A.A.POGNA;ALESSANDRA DI GASPARE;KIMBERLY REICHEL;CHIARA LIBERATORE;HARVEY E.BEERE;DAVID A.RITCHIE;MIRIAM S.VITIELLO-.Spatial coherence of electrically pumped random terahertz lasers)[J].光子学研究（英文）,2022(02):524-534
A类：
absorptions,QCLs
B类：
Spatial,coherence,electrically,pumped,random,terahertz,lasers,Light,sources,radiance,tailored,properties,highly,desirable,imaging,applications,mid,infrared,THz,spectral,regions,which,host,large,variety,molecular,distinctive,fingerprints,exploited,sensing,tomography,Here,characterize,spatial,multimode,quantum,cascade,emitting,mW,optical,power,showing,divergence,performing,modified,Young,double,slit,experiment,Partial,values,ranging,between,retrieved,depending,specific,degree,disorder,These,nificantly,lower,than,those,conventional,Fabry,Perot,exploiting,identical,active,design,We,then,incorporate,devised,into,confocal,system,micrometer,resolution,demonstrate,notable,performances,frequencies,against,cross,talk,speckles
AB值：
0.658073
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