Ukwahlulahlula kunye nokuguqula i-modulator ye-laser

Ukwahlulahlula kunye nokuguqula i-modulator ye-laser

Imodulator yelaserluhlobo lwezixhobo zelaser zokulawula, azilula njengeekristale, iilensi kunye nezinye izinto, kwaye azidibani kakhulu njengeeleser,izixhobo zelaser, linqanaba eliphezulu lokudibanisa, iintlobo kunye nemisebenzi yeemveliso zeklasi yesixhobo. Ukusuka kwintetho enzima yewave yokukhanya, kunokubonwa ukuba izinto ezichaphazela iwave yokukhanya bubunzulu A(r), isigaba Φ(r), imvamisa ω kunye neenkalo ezine zendlela yokusasazeka, ngokulawula ezi zinto kunokutshintsha imeko yewave yokukhanya, i-laser modulator ehambelanayo yiimodyuli yokuqina, i-phase modulator, i-frequency shifter kunye ne-deflector.

1. I-Intensity modulator: isetyenziselwa ukuguqula ubukhulu okanye ubukhulu be-laser, apho ii-optical attenuators, ii-optical gates zezona zibalaseleyo, kunye nezixhobo ezidibeneyo kunye nezixhobo ezifana nezihluli zexesha, iziqinisi zamandla, ii-intestinal antreators.

2. Imodyuli yesigaba: isetyenziselwa ukulawula isigaba somqadi, ukwanda kwesigaba kubizwa ngokuba yi-lag, ukwehla kwesigaba kubizwa ngokuba yi-lead. Kukho iintlobo ezininzi zee-phase modulators, kwaye imigaqo yazo yokusebenza yahlukile kakhulu, njengee-photoelastic modulators, ii-LN high-speed electro-optical phase modulators, ii-liquid crystal variable phase delay sheets, njl.njl., zonke zii-phase modulators ezisekelwe kwimigaqo yokusebenza eyahlukeneyo.

3. I-frequency shifter: isetyenziselwa ukutshintsha i-frequency yamaza okukhanya, isetyenziswa kakhulu kwiinkqubo ze-laser eziphezulu okanye kwizixhobo zemephu, kunye ne-acousto-optical frequency shifter njengommeli oqhelekileyo.

4. I-Deflector: isetyenziselwa ukutshintsha indlela yokusasazwa kwemitha, inkqubo ye-galvanometer eqhelekileyo yenye yazo, ukongeza kwi-mems galvanometer ekhawulezayo, i-electro-optical deflector kunye ne-acousto-optical deflector.

Sinengcamango ngokubanzi ye-laser modulator, oko kukuthi, izinto ezinokulawula ngokutshintshayo kwaye zitshintshe ezinye iipropati zomzimba ze-laser, kodwa sifuna ukwazisa ngokupheleleyo iimveliso ezithile ze-laser modulator, inqaku elinye kuphela elaneleyo. Ngoko ke, okokuqala, gxila kwi-intensity modulator. I-Intensity modulator njengohlobo lwe-modulator esetyenziswa kakhulu kuzo zonke iintlobo zeenkqubo ze-optical, uhlobo lwayo, ukusebenza okuhlukeneyo kunokuchazwa njengokunzima, namhlanje ukukwazisa i-common intensity modulator scheme ezine: i-mechanical scheme, i-electro-optic scheme, i-acousto-optic scheme kunye ne-liquid crystal scheme.

1. Iskimu soomatshini: i-mechanical strength modulator yeyona modulator yamandla yokuqala nesetyenziswa kakhulu. Umgaqo kukutshintsha umlinganiselo wokukhanya kwe-s kunye nokukhanya kwe-p kwisibane esijikelezisiweyo ngokujikeleza ipleyiti yesiqingatha-samaza, kunye nokwahlula ukukhanya nge-polarizer. Ukususela kuhlengahlengiso lokuqala lwesandla ukuya kwi-automated kakhulu kunye nokuchaneka okuphezulu kwanamhlanje, iintlobo zeemveliso zayo kunye nophuhliso lwesicelo ziye zavuthwa kakhulu.

2. Iskimu se-Electro-optical: i-electro-optical intensity modulator inokutshintsha i-intensity okanye i-amplitude yokukhanya oku-polarized, lo mgaqo usekelwe kwi-Pockels effect yeekristale ze-electro-optical. Imeko ye-polarization ye-polarized beam iyatshintsha emva kokuba i-electro-optic crystal ene-electric field isetyenzisiwe, kwaye emva koko i-polarization yahlulwe ngokukhetha yi-polarizer. I-intensity yokukhanya okukhutshiweyo inokulawulwa ngokutshintsha i-intensity ye-electric field, kwaye umda wokunyuka/wokuwa kobukhulu be-ns unokufikelelwa.

3. I-Acousto-optic scheme: i-acousto-optic modulator ingasetyenziswa njenge-intensity modulator. Ngokutshintsha ukusebenza kwe-diffraction, amandla okukhanya okungu-0 kunye nokukhanya oku-1 anokulawulwa ukufezekisa injongo yokulungisa i-intensity yokukhanya. Isango le-Acoustooptic (i-optical attenuator) lineempawu zesantya sokuguquguquka esikhawulezayo kunye nomda womonakalo ophezulu.

4 Isisombululo sekristale engamanzi: isixhobo sekristale engamanzi sidla ngokusetyenziswa njengepleyiti yamaza aguquguqukayo okanye isihluzi esinokulungiswa, ngokusebenzisa i-drive voltage kuzo zombini iziphelo zebhokisi yekristale engamanzi ukongeza i-precision polarization element, singenziwa i-liquid crystal shutter okanye i-variable attenuator, imveliso inomngxuma omkhulu ngokukhanya, iimpawu zokuthembeka okuphezulu.