Hanau THz
Nā kristal ZnTe
I kēia manawa THz time-domain spectroscopy (THz-TDS), ʻo ke ala maʻamau ʻo ka THz pulses generation ma o ka hoʻoponopono ʻana (OR) o nā pulse laser ultrashort a laila ʻike ʻia e ka manuahi electro-optic sampling (FEOS) i nā kristal nonlinear o ka hoʻonohonoho kūikawā. .
I ka hoʻoponopono ʻana, ua hoʻololi ʻia ka bandwidth o ka pulse laser ikaika i ka bandwidth o ka hoʻokuʻu ʻana o THz, aʻo ka hōʻailona optical a me ka THz e hoʻolaha pū ana ma o ke aniani nonlinear.
I ka FEOS, hoʻolaha pū nā THz a me nā pulse laser probe nāwaliwali ma o ke aniani nonlinear, e alakaʻi ana i ka thz field-induced phase retardation o ka pulse laser probe prepolarized kūikawā.Hoʻohālikelike ʻia kēia pae hoʻihoʻi i ka ikaika o ke kahua uila o ka hōʻailona THz i ʻike ʻia.
ʻO nā kristal ZnTe i hoʻopili ʻia
10x10x(1+0.01)mm
Hiki ke hoʻohana ʻia nā kristal nonlinear e like me ZnTe, me ka <110> ʻano aniani i OR a me FEOS i ka manawa maʻamau.Eia naʻe, ʻaʻole i loaʻa i nā crystals o <100> orientation nā waiwai nonlinear e pono ai no OR a me FEOS, ʻoiai ʻo kā lākou linear THz a me nā waiwai optical e like me ka <110> -oriented crystals. ʻO nā koi no ka hanauna THz holomua i loko o ia ʻano kikoʻī THz-TDS i hoʻokumu ʻia i ke aniani nonlinear he pae hoʻohālikelike ma waena o ka hoʻokumu ʻana (ʻike) i ka pulse optical a i hana ʻia (ʻike ʻia) hōʻailona THz.Eia nō naʻe, ʻo nā kristal nonlinear kūpono no nā noi spectroscopy THz he mau phonon optical resonances ikaika i ka laulā THz, ʻo ka hoʻopuehu ikaika o THz refractive index e kaupalena i ka pae-matching frequency range.
Hāʻawi nā kristal nonlinear mānoanoa i ka pae THz-optical e pili ana i kahi ʻāpana alapine haiki. Kākoʻo lākou i kahi hapa o ka bandwidth o ka hoʻoulu ʻana (ʻike) laser pulse, no ka mea, ʻike nā hōʻailona optical a me THz i ka hele wāwae nui ma luna o nā mamao hoʻolaha lōʻihi.Akā, ʻoi aku ka kiʻekiʻe o ka hōʻailona kiʻekiʻe i hana ʻia (ʻike ʻia) no ka lōʻihi o ka hoʻolaha ʻana.
Hāʻawi nā kristal nonlinear lahilahi i ka pae THz-optical maikaʻi i loko o ka bandwidth piha o ka hoʻokumu ʻana (ʻike) i ka pulse laser, akā ʻoi aku ka liʻiliʻi o ka ikaika hōʻailona i hana ʻia (ʻike ʻia), no ka mea, ua like ka ikaika o ka hōʻailona me ka mamao o ka hoʻolaha ʻana o THz-optical. .
I mea e hāʻawi ai i kahi pae ākea ākea i ka hanauna THz a me ka ʻike ʻana a mālama i ka hoʻonā alapine kiʻekiʻe i ka manawa like, ua hoʻomohala maikaʻi ʻo DIEN TECH i ka refractive hui pū ʻia ZnTe crystal- he 10µm mānoanoa (110) ZnTe kristal ma kahi (100)ZnTe e unuhi.I loko o ia mau kristal he mea koʻikoʻi wale ka THz-optical co-propagation i loko o ka<110> ʻāpana o ke aniani, a ʻo ka nui o ka noʻonoʻo ʻana e hoʻonui i ka mānoanoa aniani i hui pū ʻia.
