Ua hoʻomohala pono ʻia ka modulator electro-optic terahertz akamai ikaika

I ka makahiki i hala, ua hoʻomohala ka hui o Sheng Zhigao, he mea noiʻi ma ke Kikowaena ʻo High Magnetic Field o ka Hefei Institute of Physical Sciences, Chinese Academy of Sciences, i kahi modulator electro-optic terahertz ikaika a akamai hoʻi e hilinaʻi ana i ka hāmeʻa hoʻokolohua ʻo steady-state high magnetic field. Ua paʻi ʻia ka noiʻi ma ACS Applied Materials & Interfaces.

ʻOiai ʻoi aku ka maikaʻi o nā ʻano spectral o ka ʻenehana terahertz a me nā manaʻolana noi ākea, ua kaupalena nui ʻia kāna noi ʻenekinia e ka hoʻomohala ʻana o nā mea terahertz a me nā ʻāpana terahertz. I waena o lākou, ʻo ka kaohi ikaika a akamai o ka nalu terahertz e ke kahua waho he kuhikuhi noiʻi koʻikoʻi ia ma kēia kahua.

Ke kuhikuhi nei i ke kuhikuhi noiʻi ʻoi loa o nā ʻāpana koʻikoʻi terahertz, ua hana ka hui noiʻi i kahi modulator stress terahertz e pili ana i ka graphene mea ʻelua-dimensional [Adv. Optical Mater. 6, 1700877(2018)], kahi modulator photocontrolled broadband Terahertz e pili ana i ka oxide pili ikaika [ACS Appl. Mater. Inter. 12, After 48811(2020)] a me ke kumu terahertz hoʻokahi-frequency magnetic-controlled hou i hoʻokumu ʻia ma phonon [Advanced Science 9, 2103229(2021)], ua koho ʻia ka kiʻiʻoniʻoni electron oxide vanadium dioxide e pili ana i ka papa hana, ka hoʻolālā ʻano multi-layer a me ke ʻano kaohi uila. Hoʻokō ʻia ka modulation hana multifunctional o ka hoʻoili ʻana o terahertz, ka noʻonoʻo a me ka absorption (Kiʻi a). Hōʻike nā hualoaʻa ma waho aʻe o ka transmittance a me ka absorptivity, hiki ke hoʻoponopono ikaika ʻia ka pae reflectivity a me ka reflection e ke kahua uila, kahi e hiki ai i ka hohonu modulation reflectivity ke hōʻea i ka 99.9% a hiki i ka pae reflection ke hōʻea i ka modulation ~180o (Kiʻi b). ʻOi aku ka hoihoi, no ka hoʻokō ʻana i ka mana uila terahertz akamai, ua hoʻolālā nā mea noiʻi i kahi mea hana me kahi loop feedback "terahertz - electric-terahertz" hou (Kiʻi c). Me ka nānā ʻole i nā loli i nā kūlana hoʻomaka a me ke kaiapuni waho, hiki i ka mea akamai ke hōʻea koke i ka waiwai modulation terahertz i hoʻonohonoho ʻia (i manaʻo ʻia) ma kahi o 30 kekona.

(a) Kiʻikuhi hoʻolālā o kahimea hoʻololi optic electroma muli o VO2

(b) nā loli o ka transmittance, reflectivity, absorptivity a me ka pae reflection me ke au i hoʻopaʻa ʻia

(c) kiʻikuhi hoʻolālā o ka mana akamai

Ka hoʻomohala ʻana o kahi terahertz ikaika a akamai hoʻimea hoʻololi uila-opticma muli o nā mea uila e pili ana e hāʻawi ana i kahi manaʻo hou no ka hoʻokō ʻana i ka mana akamai terahertz. Ua kākoʻo ʻia kēia hana e ka National Key Research and Development Program, ka National Natural Science Foundation a me ka High Magnetic Field Laboratory Direction Fund o ka moku ʻo Anhui.