Luv luv qhia txog lasermodulatortshuab
Laser yog ib tug high-frequency electromagnetic yoj, vim hais tias ntawm nws zoo coherence, zoo li cov tsoos electromagnetic nthwv dej (xws li siv nyob rau hauv xov tooj cua thiab TV), raws li ib tug cab kuj yoj xa cov ntaub ntawv. Cov txheej txheem ntawm kev thauj cov ntaub ntawv mus rau lub laser yog hu ua kev hloov kho, thiab cov cuab yeej ua tiav cov txheej txheem no hu ua modulator. Nyob rau hauv cov txheej txheem no, lub laser ua raws li tus neeg nqa khoom, thaum lub teeb liab tsawg zaus uas xa cov ntaub ntawv yog hu ua lub teeb liab modulated.
Laser modulation feem ntau muab faib ua internal modulation thiab sab nraud modulation ob txoj kev. Internal modulation: yog hais txog kev hloov pauv hauv cov txheej txheem ntawm laser oscillation, uas yog, los ntawm kev hloov kho lub teeb liab los hloov cov oscillation tsis ntawm lub laser, yog li cuam tshuam rau cov yam ntxwv ntawm lub laser. Muaj ob txoj hauv kev ntawm kev hloov kho sab hauv: 1. Ncaj qha tswj lub twj tso kua mis lub zog ntawm lub laser los kho qhov kev siv ntawm cov zis laser. Los ntawm kev siv lub teeb liab los tswj lub zog hluav taws xob laser, lub zog hluav taws xob laser tuaj yeem tswj tau los ntawm lub teeb liab. 2. Cov ntsiab lus hloov kho tau muab tso rau hauv lub resonator, thiab cov yam ntxwv ntawm lub cev ntawm cov qauv kev hloov pauv no yog tswj los ntawm lub teeb liab, thiab tom qab ntawd cov kev hloov pauv ntawm cov resonator tau hloov mus ua kom tiav cov kev hloov pauv ntawm cov zis laser. Qhov kom zoo dua ntawm kev hloov kho sab hauv yog qhov kev ua haujlwm ntawm kev ua haujlwm siab, tab sis qhov tsis zoo yog vim hais tias lub modulator nyob rau hauv kab noj hniav, nws yuav ua rau kom poob rau hauv kab noj hniav, txo qhov tso zis zog, thiab bandwidth ntawm lub modulator kuj yuav ua. txwv los ntawm passband ntawm lub resonator. Sab nrauv modulation: txhais tau hais tias tom qab tsim lub laser, lub modulator tau muab tso rau ntawm txoj kev kho qhov muag sab nraum lub laser, thiab cov yam ntxwv ntawm lub cev ntawm lub modulator hloov nrog lub teeb liab modulated, thiab thaum lub laser hla dhau lub modulator, ib tug tej yam parameter. ntawm lub teeb nthwv dej yuav raug hloov kho. Qhov zoo ntawm kev hloov kho sab nraud yog tias lub zog tso zis ntawm lub laser tsis cuam tshuam thiab bandwidth ntawm tus maub los tsis txwv los ntawm passband ntawm lub resonator. Qhov tsis zoo yog qhov kev ua haujlwm qis qis.
Laser modulation tuaj yeem muab faib ua amplitude modulation, zaus hloov kho, theem kev hloov kho thiab siv zog hloov kho raws li nws cov khoom siv. 1, amplitude modulation: amplitude modulation yog qhov oscillation uas lub amplitude ntawm tus cab kuj hloov nrog txoj cai ntawm lub teeb liab modulated. 2, zaus hloov kho: hloov lub teeb liab los hloov qhov zaus ntawm laser oscillation. 3, theem kev hloov pauv: hloov kho lub teeb liab hloov cov theem ntawm lub laser oscillation laser.
Electro-optical siv zog modulator
Lub hauv paus ntsiab lus ntawm electro-optic intensity modulation yog kom paub qhov kev siv qhov kev hloov kho raws li kev cuam tshuam ntawm lub teeb pom kev los ntawm kev siv cov nyhuv electro-optic ntawm siv lead ua. Cov nyhuv electro-optical ntawm cov siv lead ua yog hais txog qhov tshwm sim uas qhov cuam tshuam qhov ntsuas ntawm cov siv lead ua hloov pauv raws li qhov kev txiav txim ntawm sab nraud hluav taws xob, uas ua rau muaj qhov sib txawv ntawm lub teeb dhau los ntawm cov siv lead ua hauv cov lus qhia polarization sib txawv, kom cov polarization. lub xeev ntawm lub teeb hloov.
Electro-optic theem modulator
Electro-optical theem modulation txoj cai: lub kaum sab xis ntawm laser oscillation yog hloov los ntawm txoj cai ntawm modulating teeb liab.
Ntxiv rau qhov saum toj no electro-optic siv zog hloov kho thiab electro-optic theem hloov kho, muaj ntau hom laser modulators, xws li transverse electro-optic modulator, electro-optic travel yoj modulator, Kerr electro-optic modulator, acousto-optic modulator , magnetooptic modulator, cuam tshuam modulator thiab spatial light modulator.
Post lub sij hawm: Aug-26-2024