Iimpawu zeImodulator ye-AOM acousto-optic
Melana namandla aphezulu okukhanya
I-modulator ye-AOM acousto-optic inokumelana namandla aqinileyo e-laser, iqinisekisa ukuba ii-laser ezinamandla aphezulu zinokudlula kakuhle. Kwikhonkco le-laser ene-fiber yonke,i-modulator ye-fiber acousto-opticIguqula ukukhanya okuqhubekayo kube kukukhanya okushukumayo. Ngenxa yomjikelo ophantsi womsebenzi we-optical pulse, uninzi lwamandla okukhanya lufumaneka ngaphakathi kokukhanya kwe-zero-order. Ukukhanya kwe-first-order diffraction kunye nokukhanya kwe-zero-order ngaphandle kwe-acousto-optic crystal ziyasasazeka ngendlela yemitha ye-Gaussian ehlukeneyo. Nangona zihlangabezana neemeko ezingqongqo zokwahlulwa, inxalenye yamandla okukhanya kokukhanya kwe-zero-order iqokelelana kumphetho we-optical fiber collimator kwaye ayinakudluliselwa nge-optical fiber, ekugqibeleni itshiswe nge-optical fiber collimator. Isakhiwo se-diaphragm sibekwe kwindlela ye-optical ngesakhelo sokulungiswa esichanekileyo esinemilinganiselo emithandathu ukuze kuthintelwe ukudluliselwa kokukhanya okushukumayo embindini we-collimator, kwaye ukukhanya kwe-zero-order kudluliselwa kwigumbi ukuthintela ukukhanya kwe-zero-order ekutshiseni i-optical fiber collimator.
Ixesha lokunyuka ngokukhawuleza
Kwikhonkco le-laser enefayibha yonke, ixesha lokunyuka ngokukhawuleza kwe-optical pulse ye-AOMi-modulator ye-acouste-opticiqinisekisa ukuba i-pulse yesignali yenkqubo inokudlula ngokufanelekileyo ukuya kwinqanaba eliphezulu, ngelixa ithintela ingxolo yesiseko ukuba ingangeni kwi-acouste-optic shutter ye-time-domain (i-time-domain pulse gate). Eyona nto iphambili ekufikeleleni kwixesha lokunyuka ngokukhawuleza kwee-optical pulses kukunciphisa ixesha lokuhamba kwamaza e-ultrasonic ngokukhanya. Iindlela eziphambili ziquka ukunciphisa ububanzi besinqe sokukhanya kwesiganeko okanye ukusebenzisa izixhobo ezinesantya esiphezulu sesandi ukwenza iikristale ze-acoust-optic.
Umfanekiso1 Ixesha lokunyuka kwentliziyo yokukhanya
Ukusetyenziswa kwamandla aphantsi kunye nokuthembeka okuphezulu
Iinqanawa zasemoyeni zinezixhobo ezinqongopheleyo, iimeko ezinzima kunye neendawo ezintsonkothileyo, nto leyo ebeka iimfuno eziphezulu ekusebenziseni amandla kunye nokuthembeka kwee-modulators ze-AOM zefayibha ye-optical.Imodulator ye-AOMyamkela ikristale ekhethekileyo ye-tangential acousto-optic, ene-acousto-optic factor ephezulu ye-M2. Ke ngoko, phantsi kweemeko ezifanayo zokusebenza kakuhle kwe-diffraction, ukusetyenziswa kwamandla okuqhuba okufunekayo kuphantsi. I-optical fiber acoust-optic modulator yamkela olu yilo lwamandla aphantsi, olungagcini nje ngokunciphisa imfuno yokusetyenziswa kwamandla okuqhuba kwaye lugcine izixhobo ezinqongopheleyo kwi-spacecraft, kodwa lukwanciphisa imitha ye-electromagnetic yesignali yokuqhuba kwaye lunciphise uxinzelelo lokusasaza ubushushu kwinkqubo. Ngokweemfuno zenkqubo ezingavumelekanga (ezithintelweyo) zeemveliso ze-spacecraft, indlela eqhelekileyo yokufaka ikristale yee-optical fiber acousti-optic modulators isebenzisa kuphela inkqubo yokubopha irabha ye-silicone enecala elinye. Nje ukuba irabha ye-silicone ingasebenzi, iiparameter zobugcisa zekristale ziya kutshintsha phantsi kweemeko zokungcangcazela, ezingahlangabezani neemfuno zenkqubo yeemveliso ze-aerospace. Kwikhonkco le-laser, ikristale ye-optical fiber acoust-optic modulator ilungiswa ngokudibanisa i-mechanical fixation kunye ne-silicone rubber bonding. Ulwakhiwo lokufakelwa kweendawo eziphezulu nezisezantsi lulingana kangangoko kunokwenzeka, kwaye kwangaxeshanye, indawo yoqhagamshelwano phakathi komphezulu wekristale kunye nendlu yokufakelwa iyanda. Inezibonelelo zomthamo onamandla wokusasaza ubushushu kunye nokusasazwa kwentsimi yobushushu obulinganayo. Ii-collimators eziqhelekileyo zilungiswa ngerabha ye-silicone ebophayo. Phantsi kweemeko zobushushu obuphezulu kunye nokungcangcazela, zinokutshintsha, zichaphazele ukusebenza kwemveliso. Ulwakhiwo loomatshini ngoku lwamkelwe ukulungisa i-optical fiber collimator, ephucula uzinzo lwemveliso kwaye ihlangabezana neemfuno zenkqubo yeemveliso zeenqwelo moya.
Ixesha leposi: Julayi-03-2025