E rua ngā momo mahi o te modulator acousto-optic

E rua ngā momo mahi okaiwhakarerekētanga oro-whatu
He kaiwhakatikatika oro-whatu (Kaiwhakarerekētanga AOM) he taputapu ka taea te whakarerekē i te kaha, te whakahuri rānei i te koki o te hihi laser me te kore e hiahiatia he wāhanga nekeneke nui. He māmā noa iho tōna kaupapa matua: te whakaoho i ngā ngaru oro i roto i te reo mārama, te whakamahi i ngā huringa auau o te mātotoru i puta mai i ngā ngaru oro hei hanga i tētahi whatanga diffraction, ā, mā reira ka whakarerekē i te mārama e haere ana i roto.
1. I muri i te urunga ki te rohe o Prague, e rua ngā whakamahinga matua o te AOM modulator:
1.1 Te whakarerekētanga kaha: te whakatika i te auau RF me te whakarerekē i te mana RF. Mā te whakarerekētanga o te kaha o te oro ka rerekē te hohonutanga o te whatanga, ā, ka rerekē te kaha o te mārama whakarara tuatahi. Ko te whakarerekētanga kaha māmā rawa ko te pana: ina tahuri te RF, ka puta te ira rama taumata tuatahi; ina whakawetohia te RF, ka ngaro te ira rama taumata tuatahi.
1.2 Te whakapiko/te matawai i te hihi: te whakarerekē i te auau RF. Ka rerekē te roangaru o te ngaru oro i te huringa auau, ā, ka rerekē anō hoki te pūmau whatu, ka hua ake he huringa i te koki whakapiko. Ka whakapiko te hihi taiaho i roto i tētahi awhe koki iti rawa. Ko te mahi i tēnei aratau he tikanga me karanga he whakapiko whatu (AOD).
Ko te mauri o te pūwhakatikatika acousto-whatu ka taea te mārama ko tētahi whatu whakarara ka taea te whakarite, e whakamahi ana i ngā tohu auau reo irirangi hei whakahaere i ngā ngaru ultrasonic, ngā ngaru ultrasonic hei whakahaere i ngā tawhā whatu, kātahi ka whatu hei whakahaere i te ahunga me te kaha o te taiaho. Kāore he wāhanga nekenekehanga nui, ā, ka taea te whakaoti i te whakawhiti rama, te whakaiti i te kanapa, me te matawai koki iti i ngā tere tino teitei. Ahakoa he nui te utu, ā, he iti te whānuitanga o te whakapohehe, kāore he otinga kē atu i tēnei wā i runga i te ara o te whakahaere rama tere-tino teitei.
Ko ngā painga o te AOM modulator he tere tere, kāore he kakahu, me te tino tika, engari kāore anō kia whakakapia katoatia ngā otinga miihini. He tino tika te take: he uaua te hanganga, he nui te utu, he tino iti te koki piko, ā, he iti rawa te whai huatanga whānui i ngā pūnaha miihini pēnei i ngā whakaata me ngā motuka. Nō reira, i ngā āhuatanga kāore e teitei ngā whakaritenga tere, he pai ake te piko miihini i ngā wā katoa. Mēnā ka eke te tere piko ki te MHz, ki runga ake rānei, ā, kāore e taea e te hanganga miihini te pupuri, ka taea...ngā taputapu oro-whatutino kore e taea te whakakapi.