Acousto-optic modulator: Ngwa na oyi akwa atom
Dị ka isi akụrụngwa nke niile-fiber laser njikọ na oyi atom kabinet, naeriri anya eriri Acousto-optic modulatorga-enye elu-ike ugboro-stabilized laser maka oyi atom kabinet. Atọm ga-amịkọrọ foton na ugboro ugboro nke v1. Ebe ọ bụ na ike nke photons na atọm dị iche, ọsọ nke atọm ga-ebelata ka ha nwetasịrị foton, si otú a na-enweta ebumnuche nke atọm jụrụ oyi. Atọ oyi laser, yana uru ha dị ka ogologo oge nyocha, mkpochapụ nke mgbanwe ugboro ugboro Doppler na mgbanwe ugboro nke nkuku kpatara, yana njikọ na-adịghị ike nke ebe ọkụ nchọpụta, na-eme ka ikike nha nha nha anya dị mma ma nwee ike itinye ya n'ọtụtụ ebe na elekere atomic oyi, interferometers oyi oyi, na atomic oyi na-atụ n'etiti mpaghara ndị ọzọ.
Ime nke ngwa anya eriri AOM acousto-optic modulator tumadi mejupụtara kristal acousto-optic na ngwa anya eriri collimator, wdg The modulated mgbaàmà na-eme na piezoelectric transducer n'ụdị nke eletriki mgbaàmà (amplitude modulation, usoro modulation ma ọ bụ ugboro modulation). Site n'ịgbanwe njirimara ntinye dị ka ugboro na njupụta nke mgbaàmà gbanwetụrụ, a na-enweta ugboro ole na njupụta nke laser ntinye. Onye ntụgharị piezoelectric na-atụgharị akara ọkụ eletrik n'ime akara ultrasonic nke na-adịgasị iche n'otu ụkpụrụ ahụ n'ihi mmetụta piezoelectric ma gbasaa ha na acousto-optic media. Mgbe ndezigharị ntugharị nke igwe acousto-optic na-agbanwe kwa oge, a na-emepụta grating index refractive. Mgbe laser gafere site na eriri collimator wee banye na acousto-optic media, diffraction na-apụta. Ugboro nke ọkụ a gbasasịrị na-ebuli ugboro ultrasonic na ugboro ntinye laser mbụ. Gbanwee ọnọdụ nke eriri eriri anya collimator iji mee ka eriri acoust-optic modulator rụọ ọrụ na steeti kacha mma. N'oge a, akụkụ ihe ahụ merenụ nke ọkụ ọkụ ahụ merenụ kwesịrị imeju ọnọdụ Bragg diffraction, ọnọdụ diffraction kwesịrị ịbụ Bragg diffraction. N'oge a, ihe fọrọ nke nta ka ọ bụrụ ike niile nke ọkụ ahụ merenụ na-ebufe na ọkụ mgbagwoju anya nke mbụ.
A na-eji modulator AOM acouto-optic nke mbụ na njedebe ihu nke ngwa ngwa ngwa nke sistemu ahụ, na-emegharị ọkụ ntinye na-aga n'ihu site na njedebe ihu site na iji pulses anya. Igwe ihe anya emezigharịrị wee banye modul nkwalite ngwa anya nke sistemu maka mmụba ike. Nke abụọAOM akuto-optic modulatorA na-eji ya na njedebe azụ nke ngwa anya ngwa anya, ọrụ ya bụ ikewapụ ụda isi nke mgbaàmà pulse ngwa anya nke usoro ahụ na-amụba. A na-ekesa akụkụ ihu na azụ nke ọkụ ọkụ nke mbụ AOM acouto-optic modulator na-ekesa n'ụzọ dị nro. Mgbe ịbanye n'ọgbatị ngwa anya, n'ihi uru nke amplifier maka pulse na-eduga ọnụ na-adị elu karịa nke ahụ maka ọkpụkpụ trailing pulse, ọkụ ọkụ na-egbuke egbuke ga-egosi ihe mgbagwoju anya nke waveform ebe ike na-etinye uche na njedebe na-eduga, dị ka e gosiri na Figure 3. Iji mee ka usoro ahụ nwee ike nweta ihe ntanetị anya na nkesa nke mbụ na nkesa AsọmpiOM, nkesa nke mbụ na nkesa AsọmpiOM. modulator kwesịrị ịnakwere modulation analog. Ngalaba na-ahụ maka sistemụ na-edozi ọnụ ụzọ ịrị elu nke mbụ AOM acouto-optic modulator iji mee ka ọnụ ọgụgụ na-arị elu nke pulse optical nke modul acoust-optic ma kwụọ ụgwọ maka uru na-enweghị ịdị n'otu nke amplifier anya n'ihu na azụ azụ nke usu.
Igwe ihe ntaneti anya nke usoro ahụ ọ bụghị nanị na-eme ka akara ngosi pulse anya bara uru, ma na-eme ka ụda isi nke usoro pulse dịkwuo elu. Iji nweta usoro mgbaàmà dị elu-na-mkpọtụ, njirimara oke mkpochapụ nke eriri anyaAOM modulatorA na-eji ya eme ka mkpọtụ ụda dị na azụ azụ nke amplifier ahụ, na-ahụ na usoro mgbaama usoro nwere ike ịgafe n'ụzọ dị irè ruo n'ókè kasị ukwuu ma na-egbochi ụda isi site na ịbanye oge-ngalaba acousto-optic shutter (oge-ngalaba ọnụ ụzọ pulse). The digital modulation usoro na-nakweere, na TTL larịị mgbaàmà na-eji na-achịkwa on na anya nke acoust-optic modul iji hụ na ịrị elu nsọtụ nke oge-ngalaba usu usu acoust-optic modul bụ e mere ịrị elu oge nke ngwaahịa (ie, kacha nta ebili oge na ngwaahịa nwere ike nweta), na pulse obosara dabere na usu larịị larịị nke usoro.
Oge nzipu: Jul-01-2025