Izici ze-modulator ye-AOM acousto-optic

Izici zeI-modulator ye-acousto-optic ye-AOM

Melana namandla aphezulu okukhanya

I-modulator ye-AOM acousto-optic ingamelana namandla e-laser aqinile, iqinisekise ukuthi ama-laser anamandla aphezulu angadlula kahle. Kusixhumanisi se-laser esine-fiber yonke,i-modulator ye-fiber acousto-optickuguqula ukukhanya okuqhubekayo kube ukukhanya okushukunyiswayo. Ngenxa yomjikelezo womsebenzi ophansi kakhulu we-optical pulse, iningi lamandla okukhanya litholakala ngaphakathi kokukhanya kwe-zero-order. Ukukhanya kwe-first-order diffraction kanye nokukhanya kwe-zero-order ngaphandle kwe-acousto-optic crystal kusakazeka ngesimo semisebe ye-Gaussian ehlukene. Nakuba kuhlangabezana nezimo eziqinile zokuhlukaniswa, ingxenye yamandla okukhanya kokukhanya kwe-zero-order iqoqana emaphethelweni e-optical fiber collimator futhi ayikwazi ukudluliselwa nge-optical fiber, ekugcineni ishiswe nge-optical fiber collimator. Isakhiwo se-diaphragm sibekwe endleleni ye-optical ngohlaka lokulungisa olunezinhla eziyisithupha olunembile ukuze kuvinjelwe ukudluliselwa kokukhanya okushukunyiswayo maphakathi ne-collimator, futhi ukukhanya kwe-zero-order kudluliselwa endlini ukuze kuvinjelwe ukukhanya kwe-zero-order ekushiseni i-optical fiber collimator.

Isikhathi sokukhuphuka okusheshayo

Esixhumanisweni se-laser esine-fiber yonke, isikhathi sokukhuphuka okusheshayo kwe-optical pulse ye-AOMi-modulator ye-acouste-opticiqinisekisa ukuthi i-pulse yesignali yesistimu ingadlula ngempumelelo ngezinga elikhulu, ngenkathi ivimbela umsindo wesisekelo ukuthi ungangeni ku-acouste-optic shutter ye-time-domain (isango le-pulse le-time-domain). Umongo wokufinyelela isikhathi sokukhuphuka okusheshayo kwama-optical pulses usekunciphiseni isikhathi sokudlula kwamagagasi e-ultrasonic ngomsebe wokukhanya. Izindlela eziyinhloko zifaka phakathi ukunciphisa ububanzi besinqe somsebe wokukhanya owenzekile noma ukusebenzisa izinto ezinejubane eliphezulu lomsindo ukwakha amakristalu e-acoust-optic.

Isithombe 1 Isikhathi sokukhuphuka kokushaya kokukhanya

Ukusetshenziswa kwamandla okuphansi kanye nokuthembeka okuphezulu

Imikhumbi-mkhathi inezinsizakusebenza ezilinganiselwe, izimo ezinzima kanye nezimo eziyinkimbinkimbi, okubeka izidingo eziphakeme ekusetshenzisweni kwamandla kanye nokuthembeka kwama-modulators e-AOM fiber optical.I-modulator ye-AOMisebenzisa ikristalu ekhethekile ye-tangential acousto-optic, ene-acousto-optic factor ephezulu ye-M2. Ngakho-ke, ngaphansi kwezimo ezifanayo zokusebenza kahle kwe-diffraction, ukusetshenziswa kwamandla okushayela okudingekayo kuphansi. I-modulator ye-optical fiber acoust-optic isebenzisa lo mklamo wamandla aphansi, ongagcini nje ngokunciphisa isidingo sokusetshenziswa kwamandla okushayela futhi usindise izinsiza ezilinganiselwe emkhathini, kodwa futhi wehlisa imisebe kagesi yesignali yokushayela futhi unciphise ingcindezi yokushabalalisa ukushisa ohlelweni. Ngokwezidingo zenqubo ezivinjelwe (ezivinjelwe) zemikhiqizo yemikhumbi-mkhathi, indlela evamile yokufaka ikristalu yama-modulators e-optical fiber acousti-optic isebenzisa kuphela inqubo yokubopha irabha ye-silicone enohlangothi olulodwa. Uma irabha ye-silicone yehluleka, amapharamitha obuchwepheshe ekristalu azoshintsha ngaphansi kwezimo zokudlidliza, okungahlangabezani nezidingo zenqubo yemikhiqizo yezindiza. Kusixhumanisi se-laser, ikristalu ye-modulator ye-optical fiber acoust-optic iqiniswa ngokuhlanganisa ukulungiswa komshini ne-bonding yerabha ye-silicone. Isakhiwo sokufakwa kwezindawo ezingenhla nezingezansi silingana ngangokunokwenzeka, futhi ngesikhathi esifanayo, indawo yokuxhumana phakathi kobuso bekristalu kanye nendlu yokufaka ikhuliswa kakhulu. Inezinzuzo zomthamo oqinile wokusabalalisa ukushisa kanye nokusatshalaliswa kwensimu yokushisa okulingana. Ama-collimator avamile aqiniswa ngerabha ye-silicone ebophayo. Ngaphansi kwezimo zokushisa okuphezulu nokudlidliza, angase ashintshe, athinte ukusebenza komkhiqizo. Isakhiwo somshini manje sesamukelwa ukulungisa i-optical fiber collimator, ethuthukisa ukuzinza komkhiqizo futhi ihlangabezane nezidingo zenqubo yemikhiqizo yezindiza.