Uphuhliso kunye nemeko yemarike ye-laser ehlengahlengiswayo Icandelo lesibini

Uphuhliso kunye nemeko yemarike ye-laser ehlengahlengiswayo (Icandelo lesibini)

Umgaqo wokusebenzai-laser ehlengahlengiswayo

Kukho imigaqo emithathu yokufezekisa ukulungiswa kwe-laser wavelength.iileyiza ezilungisekayosebenzisa izinto ezisebenzayo ezinemigca ebanzi ye-fluorescent. Ii-resonators ezenza i-laser zinelahleko eziphantsi kakhulu kuphela kuluhlu oluncinci kakhulu lwe-wavelength. Ke ngoko, eyokuqala kukutshintsha ubude be-wavelength ye-laser ngokutshintsha ubude be-wavelength obuhambelana nommandla wokulahleka okuphantsi kwe-resonator ngezinye izinto (ezifana ne-grating). Eyesibini kukutshintsha inqanaba lamandla otshintsho lwe-laser ngokutshintsha ezinye iiparameter zangaphandle (ezifana ne-magnetic field, ubushushu, njl.njl.). Eyesithathu kukusetyenziswa kweziphumo ezingezizo zomgca ukuze kufezekiswe utshintsho lwe-wavelength kunye nokulungiswa (jonga i-nonlinear optics, i-stimulated Raman scattering, i-optical frequency doubling, i-optical parametric oscillation). Ii-laser eziqhelekileyo ezikwimo yokuqala yokulungisa zii-dye lasers, ii-chrysoberyl lasers, ii-color center lasers, ii-tunable high-pressure gas lasers kunye nee-tunable excimer lasers.

I-laser elungisekayo ngokwembono yetekhnoloji yokufezekisa yahlulwe ngokubanzi yaba: itekhnoloji yokulawula yangoku, itekhnoloji yokulawula ubushushu kunye netekhnoloji yokulawula oomatshini.
Phakathi kwazo, iteknoloji yolawulo lwe-elektroniki kukufezekisa ukulungiswa kwe-wavelength ngokutshintsha i-injection current, ngesantya sokulungisa se-NS-level, i-bandwidth yokulungisa ebanzi, kodwa amandla amancinci okukhupha, ngokusekelwe kwiteknoloji yolawulo lwe-elektroniki ikakhulu i-SG-DBR (i-sampling grating DBR) kunye ne-GCSR laser (i-grating assixiliary directional coupling backward-sampling reflection). Iteknoloji yolawulo lobushushu itshintsha ubude be-output ye-laser ngokutshintsha i-refractive index ye-laser active region. Iteknoloji ilula, kodwa icotha, kwaye inokulungiswa ngobubanzi bebhendi obuncinci obuyi-nm ezimbalwa kuphela. Ezona ziphambili ezisekelwe kwiteknoloji yolawulo lobushushu zeziI-laser ye-DFB(impendulo esasazwayo) kunye ne-laser ye-DBR (ukubonakaliswa kweBragg esasazwayo). Ulawulo lwe-mechanical lusekelwe kakhulu kwi-teknoloji ye-MEMS (inkqubo ye-micro-electro-mechanical) ukugqiba ukhetho lwe-wavelength, ene-bandwidth enkulu ehlengahlengiswayo, amandla aphezulu okukhupha. Izakhiwo eziphambili ezisekelwe kwi-teknoloji yolawulo lwe-mechanical yi-DFB (impendulo esasazwayo), i-ECL (i-laser yangaphandle ye-cavity) kunye ne-VCSEL (i-laser ekhupha umphezulu we-cavity ethe nkqo). Oku kulandelayo kuchazwa kwezi nkalo zomgaqo we-laser ezihlengahlengiswayo.

Isicelo sonxibelelwano lwe-Optical

I-laser eguqulekayo sisixhobo esiphambili se-optoelectronic kwisizukulwana esitsha senkqubo ye-dense wavelength division multiplexing kunye ne-photon exchange kwi-all-optical network. Ukusetyenziswa kwayo kwandisa kakhulu amandla, ukuguquguquka kunye nokukhula kwenkqubo yokudlulisa i-optical fiber, kwaye ifezekise ukulungiswa okuqhubekayo okanye okungaguqukiyo kuluhlu olubanzi lwe-wavelength.
Iinkampani kunye namaziko ophando kwihlabathi liphela akhuthaza ngenkuthalo uphando kunye nophuhliso lweelaser eziguqulwayo, kwaye kuqhubeka inkqubela phambili entsha kweli candelo. Ukusebenza kweelaser eziguqulwayo kuhlala kuphucuka kwaye iindleko zihlala zincitshiswa. Okwangoku, iilaser eziguqulwayo zahlulwe kakhulu zibe ziindidi ezimbini: iilaser eziguqulwayo ze-semiconductor kunye neelaser zefayibha eziguqulwayo.
Ileyiza ye-semiconductorngumthombo wokukhanya obalulekileyo kwinkqubo yonxibelelwano lwe-optical, eneempawu zobukhulu obuncinci, ubunzima obulula, ukusebenza kakuhle kokuguqula, ukonga amandla, njl.njl., kwaye kulula ukufikelela ekuhlanganisweni kwe-single chip optoelectronic nezinye izixhobo. Ingahlulwahlulwa ibe yi-tunable distribution feedback laser, i-distribution Bragg mirror laser, i-micromotor system vertical cavity surface emitting laser kunye ne-external cavity semiconductor laser.
Uphuhliso lwe-tunable fiber laser njenge-gain medium kunye nophuhliso lwe-semiconductor laser diode njengomthombo wepompo kuye kwakhuthaza kakhulu uphuhliso lwe-fiber lasers. I-tunable laser isekelwe kwi-80nm gain bandwidth ye-doped fiber, kwaye i-filter element yongezwa kwi-loop ukulawula ubude be-lasing wavelength kunye nokufezekisa ukulungiswa kwe-wavelength.
Uphuhliso lwe-tunable semiconductor laser lusebenza kakhulu kwihlabathi liphela, kwaye inkqubela phambili ikwakhawuleza kakhulu. Njengoko ii-tunable lasers zisondela kancinci kwii-fixed wavelength lasers ngokubhekiselele kwixabiso kunye nokusebenza, ngokuqinisekileyo ziya kusetyenziswa ngakumbi nangakumbi kwiinkqubo zonxibelelwano kwaye zidlale indima ebalulekileyo kwiinethiwekhi ze-all-optical ezizayo.

Uphuhliso olunokwenzeka
Kukho iintlobo ezininzi zeelaser ezilungisekayo, ezihlala ziphuhliswa ngokwazisa ngakumbi iindlela zokulungisa ubude be-wavelength ngokusekelwe kwiilaser ezahlukeneyo ze-single-wavelength, kwaye ezinye izinto ziye zanikezelwa kwimarike kwihlabathi liphela. Ukongeza kuphuhliso lweelaser ezilungisekayo ze-optical eziqhubekekayo, iilaser ezilungisekayo ezineminye imisebenzi edibeneyo nazo ziye zaxelwa, njengelaser elungisekayo edityaniswe ne-single chip ye-VCSEL kunye ne-electrical absorption modulator, kunye nelaser edityaniswe ne-sample grating Bragg reflector kunye ne-semiconductor optical amplifier kunye ne-electrical absorption modulator.
Ngenxa yokuba i-laser enokuguqulwa kwe-wavelength isetyenziswa kakhulu, i-laser enokuguqulwa yezakhiwo ezahlukeneyo inokusetyenziswa kwiinkqubo ezahlukeneyo, kwaye nganye ineengenelo kunye neengxaki. I-laser ye-semiconductor yangaphandle ingasetyenziswa njengomthombo wokukhanya oguqulwayo we-wideband kwizixhobo zokuvavanya ngokuchanekileyo ngenxa yamandla ayo aphezulu okukhupha kunye ne-wavelength enokuguqulwayo eqhubekayo. Ngokwembono yokuhlanganiswa kwe-photon kunye nokudibana nenethiwekhi ye-all-optical yexesha elizayo, i-sample grating DBR, i-superstructured grating DBR kunye ne-tunable lasers ezidityaniswe nee-modulators kunye nee-amplifiers zinokuba zithembisa imithombo yokukhanya enokuguqulwa ye-Z.
I-laser ehlengahlengiswayo ye-fiber grating ene-cavity yangaphandle ikwaluhlobo oluthembisayo lomthombo wokukhanya, onesakhiwo esilula, ububanzi bomgca omxinwa kunye nokudibanisa i-fiber okulula. Ukuba i-EA modulator ingadibaniswa kwi-cavity, ingasetyenziswa njengomthombo we-optical soliton oguquguqukayo okhawulezayo. Ukongeza, ii-fiber lasers ezihlengahlengiswayo ezisekelwe kwi-fiber lasers zenze inkqubela phambili enkulu kwiminyaka yakutshanje. Kulindeleke ukuba ukusebenza kwe-laser ezihlengahlengiswayo kwimithombo yokukhanya yonxibelelwano lwe-optical kuya kuphucuka ngakumbi, kwaye isabelo semarike siya kwanda kancinci kancinci, ngamathuba aqaqambileyo okusetyenziswa.