Ib qho electro-optical modulator (EOM) tswj lub zog, theem thiab polarization ntawm lub teeb laser los ntawm kev tswj hwm lub teeb liab hauv hluav taws xob.
Qhov yooj yim tshaj plawselectro-optic modulatoryog ib qhotheem modulatormuaj tsuas yog ib lub thawv Pockels, qhov twg lub teb hluav taws xob (siv rau lub siv lead ua los ntawm electrode) hloov qhov qeeb ntawm lub teeb laser tom qab nws nkag mus rau hauv lub siv lead ua. Lub xeev polarization ntawm lub teeb pom kev feem ntau yuav tsum sib luag rau ib qho ntawm cov kab teeb pom kev zoo ntawm lub siv lead ua kom lub xeev polarization ntawm lub teeb tsis hloov pauv.
Qee zaum tsuas yog xav tau qhov kev hloov kho me me xwb (periodic lossis aperiodic). Piv txwv li, EOM feem ntau siv los tswj thiab tswj qhov zaus resonant ntawm cov resonators optical. Resonance modulators feem ntau siv rau hauv cov xwm txheej uas xav tau kev hloov kho tas li, thiab qhov tob ntawm kev hloov kho loj tuaj yeem tau txais nrog tsuas yog lub zog tsav tsheb nruab nrab. Qee zaum qhov tob ntawm kev hloov kho loj heev, thiab ntau lub sidelobe (lub teeb comb generator, lub teeb comb) raug tsim tawm hauv cov spectrum.
Cov khoom siv polarization
Nyob ntawm seb hom thiab kev coj ntawm cov siv lead ua nonlinear, nrog rau kev coj ntawm lub zog hluav taws xob tiag tiag, qhov qeeb theem kuj tseem muaj feem cuam tshuam nrog kev coj polarization. Yog li ntawd, lub thawv Pockels tuaj yeem pom ntau lub zog tswj hwm nthwv dej, thiab nws kuj tseem siv tau los hloov kho cov xwm txheej polarization. Rau lub teeb nkag linearly polarized (feem ntau ntawm lub kaum sab xis ntawm 45 ° los ntawm lub axis siv lead ua), qhov polarization ntawm cov zis beam feem ntau yog elliptic, es tsis yog tsuas yog tig los ntawm lub kaum sab xis los ntawm lub teeb linearly polarized thawj.
Amplitude modulator
Thaum ua ke nrog lwm cov khoom siv kho qhov muag, tshwj xeeb tshaj yog nrog cov polarizers, Pockels lub 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 qhov kev hloov pauv hauv lub xeev polarization mus rau hauv kev hloov pauv hauv qhov amplitude thiab lub zog ntawm lub teeb xa mus.
Qee cov ntawv thov ntawm electro-optic modulators suav nrog:
Kev hloov kho lub zog ntawm lub teeb laser, piv txwv li, rau kev luam ntawv laser, kev kaw cov ntaub ntawv digital ceev ceev, lossis kev sib txuas lus optical ceev ceev;
Siv rau hauv cov txheej txheem laser stabilization zaus, piv txwv li, siv txoj kev Pound-Drever-Hall;
Q switches hauv cov lasers solid-state (qhov twg EOM siv los kaw lub laser resonator ua ntej lub zog hluav taws xob pulsed);
Hom kev xauv nquag (EOM modulation qhov poob lossis theem ntawm lub teeb rov qab mus ncig, thiab lwm yam);
Kev hloov pauv pulses hauv pulse pickers, positive feedback amplifiers thiab tilting lasers.
Lub sijhawm tshaj tawm: Lub Kaum Hli-11-2023