Ọgbọ THz
Ihe kristal
Na THz oge-ngalaba spectroscopy nke oge a (THz-TDS), ụzọ a na-ahụkarị bụ ọgbọ THz pulses site na nhazi anya anya (OR) nke ultrashort laser pulses wee chọpụta site na nlele oghere electro-optic n'efu (FEOS) na kristal na-abụghị nke nghazi pụrụ iche. .
Na ndozi anya, bandwit nke ihe ahụ merenụ dị ike laser pulse na-atụgharị n'ime bandwit nke THz emission, ebe ma ngwa anya na THz mgbaàmà na-agbasa site na-abụghị kristal.
Na FEOS, ma THz na nke na-adịghị ike nyocha laser pulses na-agbasa site na kristal na-adịghị ahụ anya, na-eduga na THz na-ebute oge nkwụsị oge nke ụbụrụ laser prepolarized pụrụ iche.Nkwụghachi azụ nke oge a dabara na ike ọkụ eletrik nke akara THz achọpụtara.
Kristal ZnTe akpọtụrụ anya
10x10x(1+0.01)mm
A na-enwe ike itinye kristal na-abụghị nke dị ka ZnTe, na <110> nghazi kristal na OR na FEOS na ọnọdụ nkịtị.Otú ọ dị, kristal nke <100> nghazi adịghị enwe ihe ndị na-adịghị ahụ anya nke dị mkpa maka OR na FEOS, ọ bụ ezie na ha linear THz na ngwa anya yiri nke <110>-oriented crystals. Ihe achọrọ maka ọgbọ THz na-aga nke ọma ma ọ bụ nchọpụta. N'ime ụdị spectrometer THz-TDS nke kristal na-abụghị nke kristal bụ usoro dakọtara n'etiti nrụpụta (ịchọpụta) pulse anya na njiri mara (achọpụtara) THz.Ka o sina dị, kristal ndị na-abụghị nke dabara adaba maka ngwa spectroscopy THz nwere ụda ụda ngwa anya siri ike na oke THz, mgbasa ozi siri ike nke THz refractive index na-amachi oke oge na-adakọ oge.
kristal na-adịghị ahụkebe na-enye THz-optical na-adaba na gburugburu bandwit dị warara. Ha na-akwado naanị akụkụ dị nta nke bandwit nke na-emepụta (achọpụta) laser pulse, ebe ọ bụ na akara ngosi THz na-enweta nnukwu ije-apụ n'elu ogologo mgbasa ozi.Mana ike mgbaama kacha elu emepụtara (achọpụtara) na-adịkarị elu maka ogologo mgbasa mgbasa ozi.
Kristal na-adịghị ahụkebe na-enye ezigbo THz-optical Phe dancing n'ime bandwit zuru ezu nke na-emepụta (ịchọpụta) laser pulse, ma ike mgbaama (achọpụtara) na-abụkarị obere, n'ihi na ike mgbaàmà na-adaba na THz-optical co-propagation distance. .
Iji weta usoro nhazi nke sara mbara na ọgbọ THz na nchọpụta ma mee ka mkpebi ugboro dị elu nke ọma n'otu oge ahụ, DIEN TECH rụpụtara nke ọma refractive jikọtara ZnTe crystal- 10µm ọkpụrụkpụ (110) ZnTe crystal on a (100) ZnTe mwepu.Na kristal ndị dị otú ahụ THz-optical co-propagation bụ nanị ihe dị oké mkpa n'ime <110> akụkụ nke kristal, na otutu ntụgharị uche ga-agbatịkwu kristal jikọtara ọnụ.
