Yanayin ci gaban laser mai faɗi mai faɗi

Yanayin ci gaba naLaser mai faɗi mai faɗi
Juyin halittar yanayin amsawar laser a cikin laser mai faɗi mai faɗi shine juyin halittar tsarin ramin resonant na laser. A ƙasa, za mu gabatar da tsare-tsare daban-daban na fasahar laser mai faɗi mai faɗi mai faɗi a cikin tsari na juyin halittar resonators na laser.

1. Tsarin babban rami guda ɗaya. Ana iya raba wannan nau'in laser zuwa rami mai layi (tsarin gargajiya, tsari mai sauƙi da inganci) da rami mai kusurwa (cin nasara kan ƙone ramin sarari da amfani da filin raƙuman tafiya). An ambaci resonator na zobe mara layi (NPRO) musamman a cikin resonator na zobe, wanda shine filin raƙuman tafiya na musamman kuma mai kwanciyar hankali.laserDaga mahangar tsawon rami, ana iya raba shi zuwa gajerun ramuka (mai sauƙin aiwatarwa SLM mai tsayi ɗaya, amma tare da faɗin layin ciki da babban hayaniya) da kuma dogayen ramuka (a zahirifaɗin layi mai kunkuntar, amma aiwatar da aikin SLM matsala ce ta fasaha).

2. Tsarin amsawar ramin waje guda ɗaya. An gabatar da wannan tsari don magance matsalolin ɗan gajeren lokacin hulɗar photon da kuma wahalar kawar da hayaki mai sauri a cikin babban rami guda ɗaya, ta hanyar tacewa da kuma ciyar da photons ta cikin ramin waje don matse faɗin layi. Tsarin gargajiya na farko sun haɗa da ramuka na waje na Littrow da Littman Metcalf ta amfani da gratings. Wahalar fasaha ta wannan tsari tana cikin daidaitawar lokaci tsakanin babban rami da ramin waje.
3. Tsarin rami guda biyu da aka haɗa bisa ga Bragg gratings:

Laser DFBTsarin tsari: Haɗa tsarin Bragg da yankin aiki da kuma gabatar da yankin canjin yanayi, yana da haɗin kai mafi girma, kwanciyar hankali da aiki, kuma yana inganta kwararar raƙuman DBR. Wahalar fasaha tana cikin sarrafa grating (kamar hanyoyin epitaxial RGF-DFB na biyu da hanyoyin etching surface SG-DFB na semiconductor DFB).
Tsarin laser na DBR: yana maye gurbin madubai na gargajiya da tsarin Bragg mai aiki lokaci-lokaci, waɗanda ke da halayen tacewa kuma suna da sauƙin aiwatar da SLM tare da ƙananan ramuka. Dangane da matsakaicin riba, ana iya raba shi zuwa semiconductor DBR (tare da kyakkyawan jituwa da tsari) da fiber DBR (yana dogara da fasahar sarrafa fiber da doping).

Domin ƙara matse faɗin babban ramin ramin da ke da ɗan gajeren rami (kamar DFB/DBR), za a yi amfani da tsarin ramin waje mai haɗaka. Tsarin ramin waje ya samo asali ne sakamakon ci gaban fasaha:
Ramin waje na sarari: manyan siffofi na farko, gami da grating (Littrow/Littman) da matattara daban-daban na gani (kamar daidaitaccen FP).
Ramin waje na fiber optic: ta amfani da duk na'urorin fiber optic (kamar da'irar fiber optic, FBGs, cavities na fiber optic FP, da sauransu), haɗin kai da ikon hana tsangwama sun fi ƙarfi.
Kogon jagora na waje: Tsarin nano mai ƙananan yawa wanda aka yi amfani da shi ta hanyar kayan semiconductor kamar Si da Si3N4, wanda hakan ke sa tsarin ya zama mai ƙarfi da karko.

A ƙarshe, wannan labarin ya gabatar da tsarin laser oscillating optoelectronic, wanda wani nau'i ne na musamman na amsawa, kamar fasahar daidaita mitar PDH. Ta hanyar amfani da martanin lantarki mara kyau don kulle mitar laser zuwa tushen tunani mai ƙarfi, ana iya cimma daidaiton mita mai yawa sosai. Duk da haka, tsarin yana da rikitarwa, mai tsada, kuma sassaucin tsayi yana da iyaka.