Nā mea noiʻi ma ke kula ʻo Harvard o ka ʻenekinia a me ka ʻepekema noiʻi. ʻO John A. Paulson (Harvard John A. Paulson School of Engineering and Applied Sciences - SEAS) ʻo ia ka mea mua ma ka honua e hoʻohana i ka laser semiconductor e hana i kahi ala kamaʻilio. Hoʻohana ka mea uila uila-photonic hybrid i ka laser e hana a hoʻouna i nā hōʻailona microwave a hiki i kekahi lā ke alakaʻi i kahi ʻano hou o nā kamaʻilio uea ʻole kiʻekiʻe.
ʻO ka hoʻolohe ʻana iā Dean Martin e hana ana i kāna mele kaulana ʻo "Volare" mai kahi ʻōlelo kamepiula he mea maʻamau loa ia, akā ke ʻike ʻoe ʻo kēia ka hoʻolaha lekiō mua e hoʻohana ana i ka ʻenehana laser, he ʻike ʻokoʻa loa ia. ʻO ka mea hana hou, i hoʻomohala ʻia e kahi hui mai SEAS, hana me ka laser infrared, i māhele ʻia i nā kaola o nā alapine like ʻole. Inā hoʻopuka ka laser maʻamau i kahi kukuna i hoʻokahi alapine, e like me ka violin e pāʻani ana i kahi memo pololei, a laila hoʻopuka ka mea hana i hana ʻia e nā ʻepekema i nā kukuna he nui me nā alapine like ʻole, i puʻunaue like ʻia i ke kahawai, e like me nā niho o ka lauoho lauoho, i hāʻawi. ka inoa kumu o ka mea hana - infrared laser-frequency comb (infrared laser frequency comb).
I ka makahiki 2018, ua ʻike ka hui SEAS e hiki i nā "niho" o kahi hui laser ke hoʻopili kekahi i kekahi, e hoʻoulu ai i nā electrons i loko o ka lua laser e oscillate i nā alapine microwave i ka lekiō. ʻO ka electrode kiʻekiʻe o ka hāmeʻa he slot etched e hana ma ke ʻano he antenna dipole a hana ma ke ʻano he transmitter. Ma ka hoʻololi ʻana i nā palena o ka laser (modulating it), ua hiki i ka hui ke hoʻopili i ka ʻikepili kikohoʻe i ka radiation microwave. A laila ua hoʻouna ʻia ka hōʻailona i ka wahi e loaʻa ai, kahi i ʻohi ʻia e kahi antenna pu, kānana a hoʻololi ʻia e kahi kamepiula.
"ʻO kēia mea hoʻohui āpau-i-hoʻokahi e paʻa i ka ʻōlelo hoʻohiki maikaʻi no nā kamaʻilio uea ʻole," wahi a Marco Piccardo, ʻepekema noiʻi ma SEAS. "ʻOiai ʻo ka moeʻuhane o nā kamaʻilio kelepona ʻo terahertz he lōʻihi loa ia, ua hāʻawi kēia noiʻi iā mākou i kahi palapala alanui e hōʻike ana i kahi e pono ai mākou e hele."
Ma ke kumumanaʻo, hiki ke hoʻohana ʻia kēlā mea laser transmitter e hoʻouna i nā hōʻailona ma nā alapine o 10-100 GHz a hiki i 1 THz, i ka wā e hiki mai ana e ʻae i ka lawe ʻana i ka ʻikepili i ka wikiwiki o 100 Gbit/s.
Huli i loko o ka puke pai ʻepekema PNAS.
Source: 3dnews.ru