Imodulator ye-electro-optical (I-EOM) ilawula amandla, isigaba kunye ne-polarization ye-laser beam ngokulawula isignali nge-elektroniki.
Eyona ilulai-electro-optic modulatoryiimodyuli yesigabaIqulathe ibhokisi enye yePockels kuphela, apho intsimi yombane (esetyenziswa kwikristale yi-electrode) itshintsha ukulibaziseka kwesigaba somqadi welaser emva kokuba ingene kwikristale. Imeko ye-polarization yomqadi wesiganeko idla ngokufuna ukuba ifane nenye yee-optical axes zekristale ukuze imeko ye-polarization yomqadi ingatshintshi.
Kwezinye iimeko kufuneka i-phase modulation encinci kakhulu (periodic okanye aperiodic). Umzekelo, i-EOM idla ngokusetyenziswa ukulawula nokuzinzisa i-resonant frequency ye-optical resonators. Ii-resonance modulators zihlala zisetyenziswa kwiimeko apho kufuneka i-periodic modulation, kwaye ubunzulu obukhulu be-modulation bunokufumaneka nge-drive voltage ephakathi kuphela. Ngamanye amaxesha ubunzulu be-modulation bukhulu kakhulu, kwaye uninzi lwe-sidelobe (i-light comb generator, i-light comb) lwenziwa kwi-spectrum.
Imodulator yokwahlulahlula
Ngokuxhomekeke kuhlobo kunye necala lekristale engeyomgca, kunye necala lentsimi yombane yokwenyani, ukulibaziseka kwesigaba kukwanxulumene necala le-polarization. Ke ngoko, ibhokisi yePockels inokubona iiplate zamaza ezilawulwa yi-multi-voltage, kwaye ingasetyenziselwa ukuguqula imeko ze-polarization. Kwisibane sokufaka esijikelezileyo esine-polarized (ngesiqhelo kwi-Angle ye-45° ukusuka kwi-crystal axis), i-polarization ye-output beam idla ngokuba yi-elliptic, endaweni yokuba ijikelezwe yi-Angle ukusuka kwisibane sokuqala esine-polarized.
Imodulator ye-Amplitude
Xa zidityaniswe nezinye izinto ezibonakalayo, ingakumbi ngee-polarizers, iibhokisi zePockels zingasetyenziselwa ezinye iintlobo ze-modulation. I-amplitude modulator kuMfanekiso 2 isebenzisa ibhokisi yePockels ukutshintsha imeko ye-polarization, ize isebenzise i-polarizer ukuguqula utshintsho kwimeko ye-polarization ibe lutshintsho kwi-amplitude kunye namandla okukhanya okudlulisiweyo.
Ezinye zeendlela eziqhelekileyo zokusetyenziswa kwee-electro-optic modulators ziquka:
Ukuguqula amandla e-laser beam, umzekelo, ukuprinta nge-laser, ukurekhoda idatha yedijithali ngesantya esiphezulu, okanye unxibelelwano lwe-optical olukhawulezayo;
Isetyenziswa kwiinkqubo zokuzinzisa i-laser frequency, umzekelo, kusetyenziswa indlela yePound-Drever-Hall;
Ii-Q switches kwii-laser ze-solid-state (apho i-EOM isetyenziselwa ukuvala i-resonator ye-laser ngaphambi kokuba i-pulsed radiation ivuselelwe);
Ukutshixa imo esebenzayo (ukulahleka kwe-EOM modulation cavity okanye isigaba sokukhanya okujikelezayo, njl.njl.);
Ukutshintsha iipulses kwii-pulse pickers, ii-amplifiers zempendulo ezakhayo kunye nee-laser ezijikayo.
Ixesha lokuthumela: Oktobha-11-2023