Ukuthuthukiswa kanye nesimo semakethe ye-laser elungisekayo Ingxenye yesibili

Ukuthuthukiswa kanye nesimo semakethe ye-laser elungisekayo (Ingxenye yesibili)

Isimiso sokusebenzai-laser elungisekayo

Kunezimiso ezingaba zintathu zokufeza ukulungiswa kwe-wavelength ye-laser.ama-laser alungisekayosebenzisa izinto ezisebenzayo ezinemigqa ebanzi ye-fluorescent. Ama-resonator akha i-laser anokulahlekelwa okuphansi kakhulu kuphela ebangeni elincane kakhulu le-wavelength. Ngakho-ke, okokuqala ukushintsha ubude be-wavelength ye-laser ngokushintsha ubude be-wavelength obuhambisana nesifunda sokulahlekelwa okuphansi kwe-resonator ngezinye izinto (njenge-grating). Okwesibili ukushintsha izinga lamandla okuguquka kwe-laser ngokushintsha amanye amapharamitha angaphandle (njengensimu yamagnetic, izinga lokushisa, njll.). Okwesithathu ukusetshenziswa kwemiphumela engeyona eye-linear ukuze kufezwe ukuguqulwa kwe-wavelength kanye nokulungiswa (bheka ama-optics angeyona eye-linear, ukuhlakazeka kwe-Raman okushukunyisiwe, ukuphindaphindwa kwemvamisa ye-optical, ukujikijelwa kwe-parametric kwe-optical). Ama-laser ajwayelekile angaphansi kwemodi yokuqala yokulungisa ama-dye lasers, ama-chrysoberyl lasers, ama-color center lasers, ama-tunable high-pressure gas lasers kanye nama-tunable excimer lasers.

I-laser elungisekayo ngokombono wobuchwepheshe bokuqaphela ihlukaniswe kakhulu: ubuchwepheshe bokulawula bamanje, ubuchwepheshe bokulawula izinga lokushisa kanye nobuchwepheshe bokulawula okwenziwa ngomshini.
Phakathi kwazo, ubuchwepheshe bokulawula ngogesi buwukufeza ukulungiswa kwe-wavelength ngokushintsha i-injection current, ngesivinini sokulungisa sezinga le-NS, i-wide tuning bandwidth, kodwa amandla amancane okukhipha, ngokusekelwe kubuchwepheshe bokulawula ngogesi ikakhulukazi i-SG-DBR (i-sampling grating DBR) kanye ne-GCSR laser (i-grating assixiliary directional coupling backward-sampling reflection). Ubuchwepheshe bokulawula izinga lokushisa bushintsha ubude be-wavelength bokukhipha kwe-laser ngokushintsha inkomba yokubuyisa yesifunda esisebenzayo se-laser. Ubuchwepheshe bulula, kodwa buhamba kancane, futhi bungalungiswa ngobubanzi bebhendi obuncane obuyi-nm ezimbalwa kuphela. Eziyinhloko ezisekelwe kubuchwepheshe bokulawula izinga lokushisa yileziI-laser ye-DFB(impendulo esatshalaliswayo) kanye ne-laser ye-DBR (ukubonakaliswa kwe-Bragg Okusatshalaliswayo). Ukulawulwa kwemishini kusekelwe kakhulu kubuchwepheshe be-MEMS (uhlelo lwe-micro-electro-mechanical) ukuze kuqedwe ukukhethwa kwe-wavelength, nge-bandwidth enkulu elungisekayo, amandla aphezulu okukhipha. Izakhiwo eziyinhloko ezisekelwe kubuchwepheshe bokulawula kwemishini yi-DFB (impendulo esatshalaliswayo), i-ECL (i-laser yangaphandle ye-cavity) kanye ne-VCSEL (i-laser ekhipha ubuso be-cavity eqondile). Okulandelayo kuchazwa kulezi zici zesimiso sama-laser alungisekayo.

Isicelo sokuxhumana kwe-Optical

I-laser eguquguqukayo iyithuluzi elibalulekile le-optoelectronic esizukulwaneni esisha sesistimu ye-multiplexing ye-dense wavelength division kanye ne-photon exchange kunethiwekhi ye-all-optical. Ukusetshenziswa kwayo kwandisa kakhulu amandla, ukuguquguquka kanye nokukhula kwesistimu yokudlulisa i-optical fiber, futhi ifeze ukulungiswa okuqhubekayo noma okungahleliwe ebangeni elibanzi le-wavelength.
Izinkampani nezikhungo zocwaningo emhlabeni wonke zikhuthaza ngenkuthalo ucwaningo kanye nokuthuthukiswa kwama-laser alungisekayo, futhi kuqhubeka intuthuko entsha kulo mkhakha. Ukusebenza kwama-laser alungisekayo kuthuthuka njalo futhi izindleko ziyancipha njalo. Njengamanje, ama-laser alungisekayo ahlukaniswe kakhulu ngezigaba ezimbili: ama-laser alungisekayo e-semiconductor kanye nama-laser e-fiber alungisekayo.
I-laser ye-semiconductoriwumthombo wokukhanya obalulekile ohlelweni lokuxhumana kwe-optical, olunezici zobukhulu obuncane, isisindo esilula, ukusebenza kahle kokuguqulwa okuphezulu, ukonga amandla, njll., futhi kulula ukufeza ukuhlanganiswa kwe-optoelectronic ye-chip eyodwa namanye amadivayisi. Ingahlukaniswa ibe yi-laser yempendulo ehlukanisiwe elungisekayo, i-laser yesibuko se-Bragg ehlukanisiwe, i-laser ye-micromotor system eqondile ekhipha ubuso be-cavity kanye ne-laser ye-semiconductor yangaphandle ye-cavity.
Ukuthuthukiswa kwe-laser yefayibha elungisekayo njengendlela yokuthola inzuzo kanye nokuthuthukiswa kwe-diode ye-laser ye-semiconductor njengomthombo wephampu kukhuthaze kakhulu ukuthuthukiswa kwama-laser efayibha. I-laser elungisekayo isekelwe ku-bandwidth yokuthola engu-80nm yefayibha exutshwe, futhi isici sokuhlunga sengezwa ku-loop ukulawula ubude be-wavelength obuqhubekayo futhi kufezwe ukulungiswa kwe-wavelength.
Ukuthuthukiswa kwe-laser ye-semiconductor elungisekayo kusebenza kakhulu emhlabeni, futhi intuthuko nayo ishesha kakhulu. Njengoba ama-laser alungisekayo esondela kancane kancane kuma-laser we-wavelength aqinile ngokwezindleko nokusebenza, nakanjani azosetshenziswa kakhulu ezinhlelweni zokuxhumana futhi adlale indima ebalulekile kumanethiwekhi e-all-optical esizayo.

Ithuba lokuthuthukiswa
Kunezinhlobo eziningi zama-laser alungisekayo, ngokuvamile athuthukiswa ngokwethula izindlela zokulungisa ubude be-wavelength ngokusekelwe kuma-laser ahlukahlukene angama-single-wavelength, futhi ezinye izinto zinikezwe emakethe emhlabeni jikelele. Ngaphezu kokuthuthukiswa kwama-laser alungisekayo aqhubekayo, ama-laser alungisekayo aneminye imisebenzi ehlanganisiwe nawo abikiwe, njenge-laser elungisekayo ehlanganiswe ne-chip eyodwa ye-VCSEL kanye ne-electric absorption modulator, kanye ne-laser ehlanganiswe ne-sample grating Bragg reflector kanye ne-semiconductor optical amplifier kanye ne-electric absorption modulator.
Ngenxa yokuthi i-laser eguquguqukayo ye-wavelength isetshenziswa kabanzi, i-laser eguquguqukayo yezakhiwo ezahlukahlukene ingasetshenziswa ezinhlelweni ezahlukene, futhi ngayinye inezinzuzo kanye nokungalungi. I-laser ye-semiconductor yangaphandle ingasetshenziswa njengomthombo wokukhanya oguquguqukayo we-wideband kumathuluzi okuhlola ngokunemba ngenxa yamandla ayo aphezulu okukhipha kanye ne-wavelength eguquguqukayo eqhubekayo. Ngokombono wokuhlanganiswa kwe-photon kanye nokuhlangabezana nenethiwekhi ye-all-optical yesikhathi esizayo, i-sample grating DBR, i-superstructured grating DBR kanye ne-laser eguquguqukayo ehlanganiswe nama-modulators nama-amplifier kungaba yimithombo yokukhanya eguquguqukayo ethembisayo ye-Z.
I-laser elungisekayo ye-fiber grating ene-cavity yangaphandle nayo iwuhlobo lomthombo wokukhanya oluthembisayo, olunesakhiwo esilula, ububanzi bomugqa omncane kanye nokuhlanganiswa kwe-fiber okulula. Uma i-EA modulator ingafakwa emgodini, ingasetshenziswa futhi njengomthombo we-optical soliton olungisekayo osheshayo. Ngaphezu kwalokho, ama-fiber laser alungisekayo asekelwe kuma-fiber lasers enze intuthuko enkulu eminyakeni yamuva nje. Kungalindelwa ukuthi ukusebenza kwama-laser alungisekayo emithonjeni yokukhanya yokuxhumana kwe-optical kuzothuthukiswa kakhulu, futhi isabelo semakethe sizokhula kancane kancane, ngamathuba okusebenzisa akhanya kakhulu.