Lub electro-optical modulator (EOM) tswj lub zog, theem thiab polarization ntawm lub teeb laser los ntawm hluav taws xob tswj lub teeb liab.
Qhov yooj yim tshaj plaws electro-optic modulator yog ib theem modulator uas muaj tsuas yog ib lub thawv Pockels, qhov chaw hluav taws xob (siv rau cov siv lead ua los ntawm cov electrode) hloov cov theem qeeb ntawm lub laser beam tom qab nws nkag mus rau hauv lub siv lead ua. Lub xeev polarization ntawm qhov teeb meem beam feem ntau yuav tsum tau ua tib zoo mus rau ib qho ntawm cov khoom siv kho qhov muag ntawm cov siv lead ua kom lub xeev polarization ntawm cov nqaj tsis hloov.
Qee zaum tsuas yog theem me me hloov pauv (periodic lossis aperiodic) yuav tsum tau ua. Piv txwv li, EOM feem ntau yog siv los tswj thiab ua kom ruaj khov ntawm cov zaus resonant ntawm optical resonators. Resonance modulators feem ntau yog siv nyob rau hauv cov xwm txheej uas yuav tsum tau hloov kho raws sij hawm, thiab qhov kev hloov kho qhov tob tuaj yeem tau txais nrog tsuas yog qhov nruab nrab tsav voltage. Qee lub sij hawm qhov kev hloov kho qhov tob yog qhov loj heev, thiab ntau lub sidelobe (lub teeb comb generator, lub teeb zuag) yog tsim nyob rau hauv lub spectrum.
Polarization modulator
Nyob ntawm seb hom thiab cov kev taw qhia ntawm nonlinear siv lead ua, nrog rau cov kev taw qhia ntawm qhov tseeb hluav taws xob, qhov kev ncua sij hawm kuj muaj feem xyuam rau cov kev taw qhia polarization. Yog li ntawd, lub thawv Pockels tuaj yeem pom ntau qhov hluav taws xob tswj yoj daim hlau, thiab nws kuj tuaj yeem siv los hloov cov xeev polarization. Rau linearly polarized input lub teeb (feem ntau ntawm lub kaum sab xis ntawm 45 ° los ntawm cov siv lead ua axis), lub polarization ntawm cov khoom siv hluav taws xob feem ntau yog elliptic, tsis yog tsuas yog tig los ntawm lub kaum sab xis ntawm lub teeb pom kev zoo tib yam.
Amplitude modulator
Thaum ua ke nrog lwm cov khoom siv kho qhov muag, tshwj xeeb tshaj yog nrog cov polarizers, Pockels thawv tuaj yeem siv rau lwm hom kev hloov kho. Lub amplitude modulator hauv daim duab 2 siv lub thawv Pockels los hloov lub xeev polarization, thiab tom qab ntawd siv lub polarizer los hloov cov kev hloov pauv hauv lub xeev polarization rau hauv kev hloov pauv ntawm lub amplitude thiab lub zog ntawm lub teeb kis.
Qee qhov kev siv ntawm electro-optic modulators suav nrog:
Modulating lub hwj chim ntawm ib lub laser beam, piv txwv li, rau laser luam ntawv, high-speed digital cov ntaub ntawv kaw, los yog high-speed optical kev sib txuas lus;
Siv nyob rau hauv laser zaus stabilization mechanisms, piv txwv li, siv Pound-Drever-Hall txoj kev;
Q hloov nyob rau hauv solid-state lasers (qhov twg EOM siv los kaw lub laser resonator ua ntej pulsed hluav taws xob);
Active hom-locking (EOM modulation kab noj hniav poob los yog theem ntawm round-trip lub teeb, thiab lwm yam);
Hloov cov mem tes hauv cov mem tes xaiv, cov lus pom zoo amplifiers thiab tilting lasers.
Post lub sij hawm: Oct-11-2023