Umgaqo wokusebenza we-acousto-optic modulator

1. Umgaqo wokusebenzai-modulator ye-acousto-optic
Isiseko se-acousto-optic modulator (Imodyuli ye-AOM) sisiphumo se-acousto-optic. Ulwakhiwo lwayo olusisiseko luquka iikristale ze-acousto-optic, ii-transducer, izixhobo zokufunxa, kunye nabaqhubi. Ukuphuma kwesignali yombane ngumqhubi kuguqulwa kube ngamaza e-ultrasonic yi-transducer. Xa amaza e-ultrasonic esasazeka kwi-acousto-optic medium, abangela utshintsho oluqhubekayo kwi-medium density, okwenza isakhiwo esifana ne-phase grating. Xa ukukhanya kudlula kule medium, i-diffraction iyenzeka, nto leyo efezekisa ukuguqulwa kwe-optical carrier wave. Kukho iintlobo ezimbini zeendlela ze-diffraction: i-Raman Ness diffraction kunye ne-Bragg diffraction. I-AOM modulator esetyenziswa rhoqo isebenza kwi-Bragg diffraction mode, apho ukukhanya kwe-incident kukhanya kwi-engile ethile ye-Bragg kwaye ukukhanya okuphumayo kuqulathe ukukhanya kwe-zero order okungachazwanga kunye nokukhanya kwe-first-order diffraction ene-engile ye-deflection.
2. Iiparameter eziphambili zobugcisa ze-acousto-optic modulator
2.1 Ukusebenza kakuhle kwe-diffraction kunye nokulahleka kwe-modulation: kulinganisa amandla esixhobo okuguqula ukukhanya kwesiganeko sibe kukukhanya kwe-diffract yokuqala kunye nokulahleka kwe-optical okuhambisanayo.
2.2 I-Bragg angle: I-engile ethile yesiganeko efikelela ekusebenzeni kakuhle kwe-diffraction, enxulumene nobude be-laser, i-radio frequency, kunye nesantya sesandi ngaphakathi kwekristale.
2.3 Amandla e-RF afanelekileyo: oko kukuthi amandla okugcwala, amandla okuqhuba e-RF afunekayo ukuze kufezekiswe ukusebenza kakuhle kwe-diffraction. Ifomula yokubala ethile inikwe kweli nqaku.
2.4 Ukulungiswa kwe-angle ye-Divergence: Ukuqinisekisa ukusebenza kakuhle, i-angle ye-divergence ye-incident laser kufuneka ihambelane neempawu ze-acousto-optic medium.
2.5 Isantya sokuguquguquka: sidla ngokumelwa lixesha lokunyuka kokukhanya, kuxhomekeke kwixesha lokudluliselwa kwamaza esandi ngemitha, kwaye sinxulumene nobubanzi bemitha kunye nesantya sesandi.
3. Iimfuno eziphambili zee-modulators ze-acousto-optic
Iindlela ezintlanu eziphambili zokusetyenziswaiteknoloji ye-acousto-opticzezi:
3.1 I-Acousto optic Q-switch: ibekwe ngaphakathi kwi-laser cavity, ivelisa i-laser enamandla aphezulu ngokuguqula ngokukhawuleza ilahleko kwi-cavity.
3.2 I-Acousto optic modulator/switch: isetyenziselwa ukuguquguquka koxinzelelo okanye ulawulo olukhawulezileyo lwe-laser ngaphandle kwe-laser cavity, kwaye ingasetyenziswa njenge-shutter okanye i-variable attenuator.
3.3 I-Acoustic optic deflector: Ngokutshintsha i-radio frequency ukuze ijikelezise umqadi we-laser, ukuskena komqadi okhawulezayo kuyafezekiswa, kulungele ukufikelela ngokungacwangciswanga okanye ukuskena okuqhubekayo.
3.4 I-Acousto optic frequency shifter: yenzelwe ngokukodwa ukuhambisa i-laser frequency phezulu okanye ezantsi, kwaye inokutsalwa ukuze kufezekiswe indibaniselwano ye-frequency shift enzima ngakumbi.
3.5 Isihluzi esiLungiswayo se-Acousto optic: Isihluzi se-optical esilungisekayo se-elektroniki esiqinileyo esinokukhetha ngokukhawuleza nangokutshintshatshintshayo ubude be-wavelengths ethile kwi-spectrum ebanziumthombo wokukhanya.