ʻO nā kumu ʻo Terahertz kekahi o nā ʻenehana koʻikoʻi ma ke kahua o THz radition. Nui nā ala i hōʻoia ʻia e hiki ke hoʻokō i ka radition THz.Ma ka waihona o photonics, nonlinear optical okoa-frequency hanauna e pili ana i ka nui nonlinear coefficient, kiʻekiʻe optical pōʻino paepae nonlinear kristal kekahi o nā ala e loaʻa ai ka mana kiʻekiʻe, tunable, lawe lima, a me ka lumi wela e hana ana i ka nalu THz.ʻO GaSe a me ZnGeP2(ZGP) nā kristal nonlinear i hoʻohana nui ʻia.
ʻO nā kristal GaSe me ka haʻahaʻa haʻahaʻa ma ka millimeter & THz nalu, ka paepae pōʻino kiʻekiʻe a me ka coefficient nonliear lua kiʻekiʻe (d22 = 54 pm/V), hoʻohana mau ʻia e hana i ka nalu Terahertz i loko o 40μm a me ka hawewe Thz lōʻihi hoʻi (ma mua o 40μm).Ua hōʻike ʻia ka hawewe THz hiki ke hoʻokō ʻia ma 2.60 -39.07μm i ka wā e hoʻokūkū ai i ka huina hoʻokūkū ma 11.19°-23.86°[eoo (e - o = o)], a me 2.60 -36.68μm puka i ka wā e hoʻokūkū ai ke kihi ma 12.19°-27.01°[eoe (e. - o = e)].Eia kekahi, 42.39-5663.67μm tunable THz nalu i loaʻa i ka wā o ka huina hoʻokūkū ma 1.13°-84.71°[oee (o - e = e)].
ʻO nā kristal ZnGeP2 (ZGP) me ka coefficient nonlinear kiʻekiʻe, kiʻekiʻe thermal conductivity, kiʻekiʻe optical pōʻino paepae ua noiʻi pū ʻia ma ke ʻano he kumu THz maikaʻi loa.Loaʻa iā ZnGeP2 ka helu helu ʻole ʻelua ma d36 = 75 pm/V), ʻo ia ka 160 mau manawa o nā kristal KDP.ʻO ka huina hoʻohālikelike ʻelua ʻano o nā kristal ZGP (1.03°-10.34°[oee (oe = e)] & 1.04°-10.39°[oeo (oe= e)]) e hoʻoili like ana i ka puka THz (43.01 -5663.67μm), ka ʻO ke ʻano ʻoeo i ʻoi aku ka maikaʻi o ke koho ʻana ma muli o ka ʻoi aku ka maikaʻi o ka coefficient nonlinear.I ka manawa lōʻihi loa, ua kaupalena ʻia ka proformance o nā kristal ZnGeP2 e like me ke kumu Terahertz, no ka mea, ʻo ka ZnGeP2 crystal mai nā mea hoʻolako ʻē aʻe he kiʻekiʻe ka absorption ma kahi kokoke i ka infrared region (1-2μm): Absorption coefficient >0.7cm-1 @1μm a me>0.06 knm-1@2μm.Eia nō naʻe, hāʻawi ʻo DIEN TECH i nā kristal ZGP (Kōkohu: YS-ZGP) me ka haʻahaʻa haʻahaʻa haʻahaʻa: ʻO ka helu ʻana o ka absorption <0.35cm-1@1μm a me <0.02cm-1@2μm.Hiki i nā kristal YS-ZGP kiʻekiʻe ke hiki i nā mea hoʻohana ke loaʻa i ka hopena maikaʻi aʻe.
Kuhikuhi:'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.ʻO Phys.Ua ʻōlelo ʻo Soc.
