Momwe mungagwiritsire ntchito acousto optic modulator ngati chosinthira kuwala

Momwe mungagwiritsire ntchito acousto optic modulator (AOM modulator) ngati chosinthira kuwala
1. Mbiri ndi chitukuko cha ukadaulo
1.1 Chiyambi cha Laser: Mu 1960, Theodore Meiman adapanga laser yoyamba yothandiza ya ruby, yomwe idayambitsa ukadaulo wa laser.
1.2 Kukula kwa Laser: Pambuyo pake, mitundu yosiyanasiyana ya ma laser inayamba, monga ma laser a gasi (monga ma laser a helium neon), ma laser a semiconductor, ndi ma laser olimba (monga ma laser a YAG), pang'onopang'ono akukulitsa kuchuluka kwa ntchito zawo ku magulu ankhondo, mafakitale, ndi azachipatala.
1.3 Chiyambi cha zofunikira zazikulu: Laser imafuna mphamvu yokhazikika yotulutsa, ndipo nthawi zambiri, laser singathe kuwunikira nthawi zonse cholinga. Pofuna kupewa kusintha mobwerezabwereza kwa laser yokha, switch yakunja imayambitsidwa kuti ilamulire bwino kuyatsa/kuzima kwa laser.

2. Mfundo yogwirira ntchito ya acousto optic modulator (AOM modulator)
AOM ndi chipangizo chowunikira chomwe chimagwiritsa ntchito mphamvu ya acousto-optic, pomwe mafunde amawu amafalikira kudzera mu sing'anga kuti apange kusintha kwa nthawi ndi nthawi kwa chizindikiro cha refractive, motero kusintha mawonekedwe a mafunde a kuwala omwe amadutsa mu sing'anga, monga mphamvu, ma frequency, ndi malangizo. Pakadali pano, cholinga chachikulu chili pa njira ziwiri zosinthira:
1.1 Bragg diffraction: Chofala kwambiri ndi chakuti kuwala ndi mafunde a phokoso amapanga ngodya inayake, ndipo mphamvu ya diffraction imayang'ana kwambiri kuwala koyamba, mofanana ndi stereo grating. Njira iyi imagwiritsidwa ntchito makamaka pakugwiritsa ntchito switch ya optical.
1.2 Kufalikira kwa kuwala ndi mafunde a phokoso: Njira yofalitsira kuwala ndi mafunde a phokoso ndi yolunjika, ndipo kuwala kofalikirako kumawonetsa kufalikira kwa ma symmetrical kwa magawo ambiri, mofanana ndi kugawa kwa pulaneti.
3. Njira yogwirira ntchito ya AOM modulator ngati chosinthira cha kuwala
3.1 AOM siiyika chizindikiro (sichigwira ntchito): Laser imadutsa mwachindunji (kuwala kwa 0-level) ndipo imayamwa ndi galasi lowunikira munjira yowunikira, popanda kutulutsa mphamvu.
3.2 Chizindikiro cholozera cha AOM (chogwira ntchito): diffraction imapangidwa, ndipo kuwala koyamba kumatulutsidwa pa ngodya inayake ndikulowa munjira yotsatira yowunikira kuti igwiritsidwe ntchito.
Mwa kuwongolera ngati AOM modulator imanyamula zizindikiro, kusintha mwachangu ndi kusintha kwa laser kumatha kuchitika, kukwaniritsa zochitika zomwe zimafuna kuwongolera nthawi yowunikira laser.
Kuwonjezera pa kugwiritsidwa ntchito ngati chosinthira kuwala, AOM ingagwiritsenso ntchito milingo yake iwiri ya kuwala kuti ipange kusokoneza ndikupanga zizindikiro zolimbitsa thupi, zomwe zingagwiritsidwe ntchito poyesa ndi madera ena. Kufunika kothandiza kwa mphamvu yokhazikika ya laser kwapangitsa kuti pakhale ukadaulo wa optical switch, ndipo acousto optic modulators (AOM modulator) zimachokera pa mfundo ndi kagwiritsidwe ntchito ka optical switch function pogwiritsa ntchito acousto-optic effects, makamaka Bragg diffraction mode.