Ukuthuthukiswa kanye nesimo semakethe ye-laser eguqulekayo (Ingxenye yesibili)
Umgomo wokusebenza wei-laser ephathekayo
Cishe kunezimiso ezintathu zokuzuza ukushuna kwe-laser wavelength. Iningiama-laser asebenzayosebenzisa izinto zokusebenza ezinezintambo ezibanzi ze-fluorescent. Ama-resonator akha i-laser anokulahlekelwa okuphansi kakhulu kuphela ebangeni elincanyana kakhulu lamaza. Ngakho-ke, okokuqala ukuguqula ubude begagasi be-laser ngokushintsha ubude beza obuhambisana nesifunda sokulahlekelwa okuphansi kwe-resonator ngezinye izakhi (ezifana ne-grating). Okwesibili ukushintsha izinga lamandla okushintsha kwe-laser ngokushintsha amapharamitha athile angaphandle (njengenkundla kazibuthe, izinga lokushisa, njll.). Okwesithathu ukusetshenziswa kwemiphumela engaqondile ukuze kuzuzwe ukuguqulwa kwe-wavelength nokushuna (bona i-nonlinear optics, i-Raman scattering evuselelwe, i-optical frequency double, i-optical parametric oscillation). Ama-laser ajwayelekile emodi yokuqala yokushuna amalaser kadayi, amalaser e-chrysoberyl, amalaser amaphakathi nendawo, amalaser egesi anomfutho omkhulu asebenzisekayo kanye namalaser e-excimer ashintshwayo.
I-laser ye-tunable ngokombono wobuchwepheshe bokufezeka ihlukaniswe ikakhulukazi: ubuchwepheshe bamanje bokulawula, ubuchwepheshe bokulawula izinga lokushisa kanye nobuchwepheshe bokulawula imishini.
Phakathi kwazo, ubuchwepheshe bokulawula i-elekthronikhi ukuthola ukushuna kwe-wavelength ngokushintsha umjovo wamanje, ngejubane lokushuna lezinga le-NS, umkhawulokudonsa obanzi wokushuna, kodwa amandla amancane okukhipha, okusekelwe kubuchwepheshe bokulawula i-elekthronikhi ikakhulukazi i-SG-DBR (isampula ye-grating DBR) kanye I-GCSR laser(i-axiliary grating directional coupling back-sampling reflection) . Ubuchwepheshe bokulawula izinga lokushisa bushintsha ubude begagasi be-laser ngokushintsha inkomba ye-refractive yesifunda esisebenzayo se-laser. Ubuchwepheshe bulula, kodwa buhamba kancane, futhi bungalungiswa ngobubanzi bebhande elincane lama-nm ambalwa kuphela. Okuyinhloko okusekelwe kubuchwepheshe bokulawula izinga lokushisa kukhonaI-DFB laser(impendulo esabalalisiwe) kanye ne-DBR laser (i-Distributed Bragg reflection). Ukulawulwa kwemishini kusekelwe ikakhulukazi kubuchwepheshe be-MEMS (i-micro-electro-mechanical system) ukuze uqedele ukukhethwa kwe-wavelength, nge-bandwidth enkulu eguquguqukayo, amandla aphezulu okukhipha. Izakhiwo eziyinhloko ezisekelwe kubuchwepheshe bokulawula imishini yi-DFB (impendulo esabalalisiwe), i-ECL (i-laser ye-cavity yangaphandle) kanye ne-VCSEL (i-laser ye-cavity surface emitting). Okulandelayo kuchazwa kusukela kulezi zici zomgomo wama-laser asetshenziswayo.
Isicelo sokuxhumana se-Optical
I-laser ye-tunable iyisisetshenziswa esibalulekile se-optoelectronic esizukulwaneni esisha sohlelo lokuphindaphinda lwe-wavelength division multiplexing kanye nokushintshaniswa kwe-photon kunethiwekhi yonke ye-optical. Ukusetshenziswa kwayo kukhulisa kakhulu umthamo, ukuguquguquka kanye nokuqina kwesistimu yokudlulisa i-fiber optical, futhi ibone ukushuna okuqhubekayo noma okulinganayo ebangeni elibanzi lamaza.
Izinkampani nezikhungo zocwaningo emhlabeni jikelele zigqugquzela ucwaningo nokuthuthukiswa kwama-lasers aguqulekayo, futhi inqubekelaphambili entsha yenziwa njalo kulo mkhakha. Ukusebenza kwama-laser ashintshwayo kuhlala kuthuthukiswa futhi izindleko zincishiswa njalo. Njengamanje, ama-laser aguqulekayo ahlukaniswe kakhulu abe izigaba ezimbili: ama-lasemiconductor tunable lasers nama-laser fiber lasers.
I-laser ye-semiconductoriwumthombo wokukhanya obalulekile ohlelweni lokuxhumana lwe-optical, olunezici zobukhulu obuncane, isisindo esincane, ukusebenza kahle kokuguqulwa okuphezulu, ukonga amandla, njll., futhi kulula ukufeza ukuhlanganiswa kwe-chip optoelectronic eyodwa namanye amadivaysi. Ingahlukaniswa nge-laser yempendulo esabalaliswayo esetshenziswayo, i-laser yesibuko ye-Bragg esabalalisiwe, i-micromotor system ye-vertical cavity surface emit laser kanye ne-laser cavity semiconductor yangaphandle.
Ukuthuthukiswa kwe-laser ye-fiber eguqulekayo njengendlela yokuzuza kanye nokuthuthukiswa kwe-semiconductor laser diode njengomthombo wepompo kukhuthaze kakhulu ukuthuthukiswa kwama-fiber lasers. I-laser eguqulekayo isekelwe kumkhawulokudonsa wokuzuza ongu-80nm wefayibha ene-doped, futhi isici sokuhlunga siyengezwa ku-loop ukuze kulawuleke ubude beza obungamile nokubona ukushuna kwe-wavelength.
Ukuthuthukiswa kwe-laser semiconductor eguqulekayo kusebenza kakhulu emhlabeni, futhi inqubekelaphambili nayo ishesha kakhulu. Njengoba ama-laser ashintshwayo kancane kancane esondela kuma-laser we-wavelength engaguquki ngokwezindleko nokusebenza, nakanjani azosetshenziswa kakhulu ezinhlelweni zokuxhumana futhi adlale indima ebalulekile kumanethiwekhi we-all-optical esizayo.
Ithemba lentuthuko
Kunezinhlobo eziningi zamalaser aguqulekayo, ngokuvamile athuthukiswa ngokwethula izindlela zokushuna ubude begagasi ngesisekelo sama-lases ahlukahlukene we-wavelength eyodwa, futhi ezinye izimpahla zihanjiswe emakethe emhlabeni jikelele. Ngokungeziwe ekuthuthukisweni kwama-laser aqhubekayo ashuthekayo, ama-laser athungekayo aneminye imisebenzi edidiyelwe nawo abikiwe, njengelaser eguqulekayo ehlanganiswe ne-chip eyodwa ye-VCSEL kanye ne-modulator kagesi yokumunca, kanye ne-laser ehlanganiswe nesampula ye-bragg reflector. kanye ne-semiconductor optical amplifier kanye nemoduli yokumunca kagesi.
Ngenxa yokuthi i-wavelength tunable laser isetshenziswa kabanzi, i-laser eguqulekayo yezakhiwo ezahlukahlukene ingasetshenziswa ezinhlelweni ezahlukahlukene, futhi ngayinye inezinzuzo nezinkinga. I-laser ye-semiconductor ye-cavity yangaphandle ingasetshenziswa njengomthombo wokukhanya oguqulekayo we-wideband kumathuluzi okuhlola ukunemba ngenxa yamandla ayo aphumayo aphezulu kanye nobude obungaguquleki bobude obuqhubekayo. Ngokombono wokuhlanganiswa kwe-photon kanye nokuhlangabezana nenethiwekhi yesikhathi esizayo ye-all-optical network, isampula yegrayiti ye-DBR, i-DBR ye-grating ene-superstructured nama-laser aguqulekayo ahlanganiswe namamodulator nama-amplifiers angase athembise imithombo yokukhanya efundekayo ye-Z.
I-fiber grating i-laser eguqulekayo enomgodi wangaphandle nayo iwuhlobo oluthembisayo lomthombo wokukhanya, onokwakheka okulula, ububanzi bomugqa owumngcingo kanye nokuhlanganisa i-fiber kalula. Uma i-modulator ye-EA ingahlanganiswa ku-cavity, ingasetshenziswa futhi njengomthombo we-soliton optical optical onesivinini esisheshayo. Ngaphezu kwalokho, ama-laser fiber lasers asuselwe kuma-fiber lasers enze inqubekelaphambili enkulu eminyakeni yamuva nje. Kungalindelwa ukuthi ukusebenza kwama-laser aguqulekayo emithonjeni yokukhanya yokuxhumana okubonakalayo kuzothuthukiswa ngokwengeziwe, futhi isabelo semakethe sizokhula kancane kancane, ngamathemba okusebenza akhanya kakhulu.
Isikhathi sokuthumela: Oct-31-2023