Imithombo ye-Terahertz ibilokhu ingobunye bobuchwepheshe obubaluleke kakhulu emkhakheni wemisebe ye-THz.Izindlela eziningi ziye zafakazelwa ukuthi zisebenza ukuze kuzuzwe imisebe ye-THz.Ngokujwayelekile, ubuchwepheshe be-telectronics kanye ne-photonics.Efayilini lama-photonics, isizukulwane esingaqondile se-optical difference-frequency esekelwe ku-coefficient enkulu engaqondile, i-optical damage threshold nonlinear crystals ingenye yezindlela zokuthola amandla aphezulu, aphathekayo, aphathekayo, kanye nezinga lokushisa legumbi elisebenza ngegagasi le-THz.I-GaSe ne-ZnGeP2(ZGP) amakristalu angaqondile asetshenziswa kakhulu.
Amakristalu e-GaSe anokumunca okuphansi ku-millimeter & THz wave, umkhawulo owonakele kakhulu kanye ne-coefficient ephezulu yesibili engajwayelekile (d22 = 54 pm/V), avame ukusetshenziselwa ukucubungula igagasi le-Terahertz ngaphakathi kuka-40μm kanye negagasi elide le-Thz eliguqulekayo (ngaphezu kuka-40μm).Kwafakazelwa ukuthi igagasi le-THz liyasebenziseka ku-2.60 -39.07μm lapho i-engeli yokufanisa iku-11.19°-23.86°[eoo (e - o = o)], kanye no-2.60 -36.68μm ophumayo lapho i-engeli yokufanisa ingu-12.19°-27.01°[ee (e) - o = e)].Ngaphezu kwalokho, igagasi elingu-42.39-5663.67μm eliguqulekayo le-THz litholwe lapho i-engeli yomdlalo iku-1.13°-84.71°[oee (o - e = e)].
Amakristalu e-ZnGeP2 (ZGP) ane-coefficient ephezulu engaqondile, izinga eliphezulu le-thermal conductivity, i-optical threshold eyonakalisiwe nawo acwaningwa njengomthombo omuhle kakhulu we-THz.I-ZnGeP2 futhi ine-coefficient yesibili engaqondile ku-d36 = 75 pm/V), okuyizikhathi ezingu-160 zamakristalu e-KDP.I-engeli yokufanisa yezigaba ezimbili zamakristalu e-ZGP(1.03°-10.34°[oee (oe = e)]&1.04°-10.39°[oeo (oe= e)]) icubungula okukhiphayo okufanayo kwe-THz(43.01 -5663.67μm), i uhlobo lwe-oeo lubonakale lungcono kakhulu ngenxa yokuthi lusebenza kahle kakhulu i-nonlinear coefficient.Esikhathini eside kakhulu, ukuthuthukiswa kokukhiphayo kwamakristalu e-ZnGeP2 njengomthombo we-Terahertz kwaba nomkhawulo, ngoba ikristalu ye-ZnGeP2 evela kwabanye abahlinzeki bempahla inokumunca okuphezulu endaweni eseduze ne-infrared (1-2μm):I-coefficient yokumuncwa >0.7cm-1 @1μm kanye >0.06 cm-1@2μm.Kodwa-ke, i-DIEN TECH ihlinzeka ngamakristalu e-ZGP(Imodeli: YS-ZGP) anokumuncwa okuphansi kakhulu:I-coefficient yokumuncwa<0.35cm-1@1μm kanye no-<0.02cm-1@2μm.Amakristalu e-YS-ZGP athuthukisiwe enza abasebenzisi bakwazi ukufinyelela okukhiphayo okungcono kakhulu.
Ireferensi:'基于 GaSe 和 Zn GeP2 晶体差频产生可调谐太赫兹辐射的理论研究'2008 Chin.Phys.I-Soc.
