I-electro-optical modulator (EOM) ilawula amandla, isigaba kunye ne-polarization ye-laser beam ngokulawula ngombane umqondiso.
I-modulator ye-electro-optic elula yi-modulator yesigaba equkethe ibhokisi yePockels kuphela, apho intsimi yombane (esetyenziswe kwi-crystal nge-electrode) iguqula ukulibaziseka kwesigaba se-laser beam emva kokungena kwi-crystal. Imeko ye-polarization ye-beam yesiganeko ngokuqhelekileyo kufuneka ihambelane nenye yee-axes optical ye-crystal ukwenzela ukuba imeko ye-polarization ye-beam ingatshintshi.
Kwezinye iimeko kuphela ukumodareyitha kwesigaba esincinci (periodic okanye aperiodic) kuyafuneka. Ngokomzekelo, i-EOM isetyenziswa ngokuqhelekileyo ukulawula nokuzinzisa i-resonant frequency resonators optical. Iimodyuli zeResonance zihlala zisetyenziswa kwiimeko apho kufuneka ukumodareyithwa ngamaxesha athile, kwaye ubunzulu bomodareyitha obukhulu bunokufumaneka ngombane ophakathi wokuqhuba. Ngamanye amaxesha ubunzulu bomodulation bukhulu kakhulu, kwaye uninzi lwesidelobe (ijenereyitha yekama elikhanyayo, ikama elikhanyayo) iveliswa kwibala.
Imodyuli yePolarization
Ngokuxhomekeke kuhlobo kunye nolwalathiso lwe-crystal engabonakaliyo, kunye nesalathiso sendawo yombane yangempela, ukulibaziseka kwesigaba kuhambelana nolwalathiso lwe-polarization. Ke ngoko, ibhokisi yePockels inokubona iipleyiti zamaza ezilawulwa zii-voltage ezininzi, kwaye ingasetyenziselwa ukumodareyitha amazwe epolarization. Ukukhanya kokufakwa komgca we-polarized (ngokuqhelekileyo kwi-Engile ye-45 ° ukusuka kwi-crystal axis), i-polarization ye-beam ephumayo idla ngokuba yi-elliptic, kunokuba ijikelezwe nje nge-engile ukusuka ekukhanyeni kokuqala kwe-polarized.
Imodyuli ye-Amplitude
Xa zidityaniswe nezinye izinto ezibonakalayo, ngakumbi ngeepolarizers, iibhokisi zePockels zingasetyenziselwa ezinye iintlobo zokumodareyitha. I-modulator ye-amplitude kwi-Figure 2 isebenzisa ibhokisi ye-Pockels ukutshintsha i-polarization state, kwaye emva koko isebenzisa i-polarizer ukuguqula utshintsho kwi-polarization state ibe yinguqu kwi-amplitude kunye namandla okukhanya okudlulisiweyo.
Ezinye iinkqubo eziqhelekileyo zeemodyuli ze-electro-optic zibandakanya:
Ukumodareyitha amandla ombane welaser, umzekelo, ukuprintwa kwelaser, ukurekhoda kwedatha yedijithali ngesantya esiphezulu, okanye unxibelelwano olukhawulezayo lwe-optical;
Isetyenziswe kwiindlela zokuzinzisa i-laser frequency, umzekelo, ukusebenzisa indlela yePound-Drever-Hall;
Ukutshintsha kwe-Q kwi-laser-state eqinile (apho i-EOM isetyenziselwa ukuvala i-laser resonator phambi kwemitha ye-pulsed);
Ukutshixa imowudi esebenzayo (i-EOM yokumodareyitha ilahleko okanye isigaba sokukhanya okujikelezayo, njl.);
Ukutshintsha i-pulse kwi-pulse pickers, i-amplifiers eyakhayo yempendulo kunye ne-laser ethambekayo.
Ixesha lokuposa: Oct-11-2023