Ngā mara tono o ngā modulators acousto-whatu (AOM Modulator)

Ngā mara tono o ngā modulators acousto-whatu (AOM Modulator)

Te Mātāpono o te Pūwhakarerekētanga Acousto-whatu:

An kaiwhakarerekētanga oro-whatu(AOM Modulator) he mea tito i ngā tioata acousto-whatu, ngā transducers, ngā taputapu mimiti me ngā taraiwa. Ka mahi te putanga tohu whakarerekētia mai i te taraiwa ki te transducer i roto i te āhua o te tohu hiko, kātahi ka hurihia hei ngaru ultrasonic e rerekē ana i roto i te āhua o te tohu hiko. Ina haere te ngaru ultrasonic i roto i te reo acousto-whatu, ka puta he pēhanga ā-rohe me te whakaroa o te reo, ka puta he taumahatanga rapa. Ka huri tēnei taumahatanga i ia wā me te wā, ka puta he āhuatanga kiato tauutuutu o te reo, he rite ki te kurupae ā-wāhanga. Ina haere te mārama i roto i tēnei reo e whakararuraruhia ana e ngā ngaru ultrasonic, ka puta he āhuatanga diffraction. Ka kiia tēnei āhuatanga ko te pānga acousto-whatu. I raro i te pānga o te oro me te mārama, ka whakarerekētia te kawe whatu, ka huri hei ngaru whakarerekētia e "kawe" ana i ngā mōhiohio.

Ngā tono matua o ngā modulators acousto-whatu:

Pātene Q oro me te mārama (AOQS)

Ka mahi te pana whakawhiti-Q acutooptic (AOQS) i roto i te kōhao taiaho, ā, ka whakatikatikaina hoki.

Ko te uara Q i roto i te kōhao ka whakamahia hei whakaputa i ngā reera pāorooro me ngā pāorooro poto me te mana tihi teitei. Ko te AOQS te tikanga ka whakamahia hei whakatikatika i te ngaronga o te hihi 0-raupapa. Ina tahurihia te taraiwa auau reo irirangi o AOQS, ka ārai te rama 0-raupapa, nā te diffraction, i te reera i roto i te kōhao mai i te wiri, ka whakanui ake i te ngaronga o te kōhao me te aukati i te putanga reera. Ina whakawetohia te taraiwa auau reo irirangi mō te wā poto, ka tukuna te mana whatu kua kohia i roto i te kōhao reera hei pāorooro, ā, ka puta te reera pāorooro. Ka taea te whakahoki i tēnei tukanga i te tere neke atu i te 100KHz. Ina mahi a AOQS i te āhua Bragg, kotahi noa te hihi diffraction. i roto

He maha ngā hihi whakawhitiwhiti ina mahi ana i te āhua Raman – Niss.

2. Pūwhakawhiti/Pātene Oro-whatu (Pūwhakawhiti AOM)

Ngā whakarerekētanga oro-whatu (AOM) e whakamahia whānuitia ana i waho o te kōhao taiaho hei whakarerekē i te kaha o te taiaho taunga (whakarerekētanga kaha AM). Ka taea tēnei te whakamahi i tētahi whakarerekētanga ON/OFF māmā mō te whakawhiti tere, i tētahi whakarerekētanga taumata rerekē rānei hei whakatutuki i te whakarerekētanga kaha. Ka whakatauhia te aratau whakarerekētanga e te momo taraiwa RF, ā, ka taea te mamati (kā/weto) te anaro rānei (sine, ngaru tapawhā, raina, matapōkere…). I te nuinga o te wā, ka whakamahia e te puku RF o AOM tētahi auau pumau. Ko te tawhā matua oKaiwhakahaere AOMKo te wā piki/heke, e tautuhi ana i te "tere" e taea ana, te whānuitanga whakarerekētanga whānui rānei o te whakarerekētanga. He rite te wā piki/heke ki te diameter o te hihi i roto i te modulator. Nō reira, kia tere ai te piki, me whakahaere te diameter o te hihi laser taunga. Ka taea te whakamahi i te AOM hei kati (e huri ana, e whakaweto ana i te auau kua whakaritea) me te mea hoki hei attenuator taurangi (e whakahaere ana i te kaha o te mārama kua tukuna). Ka tutuki te whakarerekētanga laser mā te whakahaere i te auau reo irirangi hei whakaputa i ngā ngaru oro i roto i te karaihe acousto-whatu.

3. Kaiwhakarerekē oro-whatu (AODF)

Ka taea e te kaiwhakawhitiwhiti acutooptic (AODF) te whakatutuki i te matawai hihi whakaoho mā te whakarerekē i te auau o te puku auau reo irirangi. Ka taea te tūranga matawai ki te tūranga matapōkere, te matawai rārangi tonu me te whakahuri ira raupapa. I runga i te karaihe, te roanga ngaru me te rahi o te hihi, ka taea te whakatutuki i te wā urupare o te 0.05 ki te 15 maikorohekona me te whakahaere tika i te tūranga o te nRad.

4. Whakawhiti Auau Oro-whatu (AOFS)

I muri i te haere i roto i ngā taputapu acousto-whatu katoa, ka puta he nekehanga auau mai i te hihi whakaputa diffraction o te hihi laser. He taputapu kiato te acousto-whatu whakawhiti auau (AOFS) i hangaia mō te whakatutuki i te nekehanga auau. I runga i ngā koki taunga rerekē kua tohua, ka nekehia e te AOFS te auau ki runga, ki raro rānei mā te auau o te tohu auau reo irirangi kua whakamahia, ā, ka taea te whakakotahi i ngā taputapu e rua, neke atu rānei, hei whakatutuki i ngā huinga auau tapeke, rerekētanga rānei. Ka whakamahia e ngā hua AOFS ngā koki mimiti oro kua hangaia mō te whakaiti i te whakaata oro me te whakarei ake i te whai huatanga o te AOFS.

5. Tātari Whakarerekētanga Oro-whatu (AOTF)

Ko te tātari whatu-āta-āta (AOTF) he tātari whatu ā-totoka, he mea whakatika hiko, ā, he mea uru matapōkere. Ka taea te whakamahi hei tīpako tere me te hihiri i ngā roangaru motuhake mai i ngā pūtake whānui, i ngā pūtake maha-raina rānei. Ka puta te wehewehenga ina tutuki ngā tikanga ōrite motuhake i waenga i ngā hihi oro. Nō reira, ka taea te whakahaere hiko i ngā tawhā tātari (pēnei i te roangaru, te hohonutanga whakarerekētanga, tae atu ki te whānui), mā te whakarato i te urunga tere (te nuinga o te wā he maikorohekona), hihiri, me te matapōkere ki te tātari whatu.