太赫兹技术的发展现状及应用前景分析.pdfVIP

23 1 Vol . 23, No. 1 200 8 2 EL ECT RO- O PT IC T E CHNOL OGY APPL ICAT I ON Februar y. 200 8 : 1673- 1255( 200 8) 01- 000 1- 04 王忆锋, 毛京湘 ( , 650223) : , T Hz ( Q CL ) T Hz ( Q WIP) . . . , . , . : ; ; ; : O441. 4 : A Analysis on Development Status of Terahertz Technology and Application Prospect WAN G Y-i eng, MA O Jing-xiang ( K unm ing I nst it ute of P hy sics , K unming Y unnan , 650223, China) Abstract :A brie overview o T H z sources and T Hz detectors, especially t he TH z quantum cascade lasers ( Q CL) and TH z quantum-w ell in rared phot odet ectors ( QWIP) , and t heir charact eristics are presented w it h emphasis on their basic principle and recent research prog ress . T he prospects and limit ations o T Hz t echnology in applicat ion are also analyzed. It is pointed out t hat the dist ance is one o t he key act ors or applicat ion o T Hz technology. I the degradation o TH z radiat ion during the t ransport at ion in atmospheric t roposphere could not e ect ively be solved , t he application o TH z technology on the earth or sea w ill be seriously limited. T Hz radar or telecommu- nicat ion based on airborne or sat ellit e has a promising ut ure. Key words: terahertz; t erahert z radiat ion source; t erahert z detect or; applicat ion T . ( ar in- ( T erahert z, TH z) , rared) , , tera- , 0. 1~ 10 T Hz ( , 3000~ 30 m ) . 1 . . 1 , , 0. 1~ 10 T Hz . : 2008- 0 1- 07 : ( 1963- ) , , , . . . 2 23 , , , . , . ( terahertz gap) .