Izici zeI-AOM acousto-optic modulator
Ukumelana namandla aphezulu okubona
Imoduli ye-AOM acousto-optic ingamelana namandla e-laser aqinile, iqinisekise ukuthi ama-laser anamandla amakhulu angadlula kahle. Kusixhumanisi se-laser ye-fiber yonke, ii-fiber acousto-optic modulatoriguqula ukukhanya okuqhubekayo kube ukukhanya okushaya ngamandla. Ngenxa yomjikelezo womsebenzi ophansi uma kuqhathaniswa we-optical pulse, amandla amaningi okukhanya atholakala ngaphakathi kokukhanya kwe-oda elinguziro. Ukukhanya kwe-diffraction ye-oda lokuqala kanye nokukhanya kwe-oda elinguziro ngaphandle kwekristalu ye-acousto-optic kusakazeka ngendlela yemishayo ye-Gaussian ehlukanisiwe. Nakuba zihlangabezana nezimo eziqinile zokuhlukana, ingxenye yamandla okukhanya okukhanya kwe-zero-order inqwabelana emaphethelweni e-optical fibre collimator futhi ayikwazi ukudluliselwa nge-fiber optical, ekugcineni ivutha nge-optical fibre collimator. Isakhiwo se-diaphragm sibekwe endleleni yokubona ngohlaka olunembayo oluphezulu lwezinhlangothi eziyisithupha ukuze kukhawulwe ukudluliswa kokukhanya okuhlukanisiwe phakathi nendawo ye-collimator, futhi ukukhanya kwe-oda elinguziro kudluliselwa endlini ukuvimbela ukukhanya kwe-oda elinguziro ekushiseni i-optical fibre collimator.
Isikhathi sokukhuphuka esisheshayo
Kusixhumanisi se-laser ye-fiber yonke, isikhathi sokukhuphuka okusheshayo kwe-optical pulse ye-AOMi-acouste-optic modulatoriqinisekisa ukuthi i-pulse yesignali yesistimu ingadlula ngokuphumelelayo ngezinga elikhulu kakhulu, kuyilapho ivimbela umsindo oyisisekelo ukuthi ungangeni ku-time-domain acouste-optic shutter (isango le-domain pulse gate). Umnyombo wokuzuza isikhathi sokukhuphuka okusheshayo kwama-optical pulses usekwehliseni isikhathi sokuhamba samagagasi e-ultrasonic ngokusebenzisa i-light beam. Izindlela eziyinhloko zihlanganisa ukunciphisa ububanzi okhalweni bokukhanya kwesigameko noma ukusebenzisa izinto ezinejubane eliphezulu lomsindo ukuze kwenziwe amakristalu e-acoust-optic.
Umfanekiso 1 Isikhathi sokukhuphuka se-pulse elula
Ukusetshenziswa kwamandla okuphansi nokuthembeka okuphezulu
Imikhumbi-mkhathi inezinsiza ezilinganiselwe, izimo ezinzima kanye nezindawo eziyinkimbinkimbi, ezibeka izidingo eziphakeme ekusetshenzisweni kwamandla nokuthembeka kwamamoduli e-optical fiber AOM. I-fiber opticalI-AOM moduleyamukela i-tangential acousto-optic crystal ekhethekile, enekhwalithi ephezulu ye-acousto-optic factor M2. Ngakho-ke, ngaphansi kwezimo ezifanayo ze-diffraction, ukusetshenziswa kwamandla okushayela okudingekayo kuphansi. I-optical fibre acoust-optic modulator yamukela lo mklamo wamandla aphansi, ongagcini nje ngokunciphisa isidingo sokushayela amandla okusetshenziswa futhi yonga izinsiza ezilinganiselwe kumkhumbi-mkhathi, kodwa futhi wehlisa imisebe kagesi yesiginali yokushayela futhi wehlise ingcindezi yokukhipha ukushisa ohlelweni. Ngokwezidingo ezinqatshelwe (ezikhawulelwe) zenqubo yemikhiqizo yemikhumbi-mkhathi, indlela evamile yokufaka ikristalu yamamodulator optical fibre acousti-optic yamukela kuphela inqubo yokuhlanganisa irabha ye-silicone yohlangothi olulodwa. Uma irabha ye-silicone ihluleka, imingcele yezobuchwepheshe yekristalu izoshintsha ngaphansi kwezimo zokudlidliza, ezingahlangabezani nezidingo zenqubo yemikhiqizo ye-aerospace. Kusixhumanisi se-laser, i-crystal ye-optical fibre acoust-optic modulator ilungiswa ngokuhlanganisa ukulungiswa komshini nokubopha kwerabha ye-silicone. Isakhiwo sokufakwa kwezindawo ezingaphezulu neziphansi ezingaphansi zilingana ngangokunokwenzeka, futhi ngesikhathi esifanayo, indawo yokuxhumana phakathi kwe-crystal surface kanye nendlu yokufaka ikhuliswa. Inezinzuzo zomthamo oqinile wokukhipha ukushisa kanye nokusabalalisa kwensimu yokushisa okulinganayo. Ama-collimator ajwayelekile alungiswa ngokubopha irabha ye-silicone. Ngaphansi kwezimo zokushisa okuphezulu nokudlidliza, zingase zishintshe, kuthinte ukusebenza komkhiqizo. Isakhiwo semishini manje semukelwa ukulungisa i-optical fibre collimator, ethuthukisa ukuqina komkhiqizo futhi ihlangabezane nezidingo zenqubo yemikhiqizo ye-aerospace.
Isikhathi sokuthumela: Jul-03-2025