Gabatarwafiber pulsed Laser
Fiber Pulsed Laser neLaser na'urorinwaɗanda ke amfani da zaruruwa da aka yi da ions masu ƙarancin ƙasa (kamar ytterbium, erbium, thulium, da sauransu) azaman matsakaicin riba. Sun ƙunshi matsakaicin riba, rami mai resonant na gani, da tushen famfo. Fasahar samar da bugun jini ya ƙunshi fasaha mai sauyawa Q (matakin nanosecond), kulle yanayin aiki (matakin picosecond), madaidaicin yanayin kullewa (matakin na biyu na mata), da fasahar ƙara ƙarfin oscillation (MOPA).
Masana'antu aikace-aikace rufe karfe yankan, waldi, Laser tsaftacewa da lithium baturi TAB yankan a cikin sabon makamashi filin, tare da Multi-yanayin fitarwa ikon kai goma-dubu-watt matakin. A fagen lidar, 1550nm pulsed lasers, tare da babban ƙarfin bugun jini da sifofin lafiyar ido, ana amfani da su a cikin jeri da tsarin radar da ke hawa abin hawa.
Babban nau'ikan samfuran sun haɗa da nau'in Q-switched, nau'in MOPA da fiber mai ƙarfipulsed lasers. Rukuni:
1. Q-switched fiber Laser: Ka'idar Q-switching shine ƙara na'urar daidaitawa a cikin laser. A mafi yawan lokuta lokaci, Laser yana da babban hasara kuma kusan babu fitowar haske. A cikin ɗan gajeren lokaci, rage asarar na'urar yana ba da damar laser don fitar da gajeren bugun bugun jini. Q-switched fiber Laser za a iya cimma ko dai rayayye ko m. Fasaha mai aiki yawanci ya ƙunshi ƙara na'ura mai ƙarfi a cikin rami don sarrafa asarar Laser. Dabarun masu wucewa suna amfani da cikakkun abubuwan sha ko wasu abubuwan da ba na kan layi ba kamar tarwatsawar Raman da zazzagewarwar Brillouin don samar da hanyoyin Q-modulation. Yawan bugun jini gabaɗaya da hanyoyin canza Q-switch suke a matakin nanosecond. Idan ana so a samar da guntun bugun jini, ana iya samun ta ta hanyar kulle-kulle.
2. Yanayin-kulle fiber Laser: Yana iya samar da ultrashort bugun jini ta hanyar aiki-kulle hanyoyin ko m yanayin-kulle hanyoyin. Saboda lokacin amsawa na modulator, faɗin bugun bugun jini da aka samar ta hanyar kulle yanayin aiki gabaɗaya yana a matakin picosecond. Kulle yanayin wucewa yana amfani da na'urori masu kulle yanayin wucewa, waɗanda ke da ɗan gajeren lokacin amsawa kuma suna iya haifar da bugun jini akan sikelin na biyu na femtosecond.
Anan akwai taƙaitaccen gabatarwa ga ƙa'idar kulle ƙira.
Akwai hanyoyi masu tsayi marasa adadi a cikin rami mai resonant na Laser. Don rami mai siffar zobe, tazarar mitar hanyoyin madaidaiciya daidai yake da /CCL, inda C shine saurin haske kuma CL shine tsayin hanyar gani na hasken sigina yana tafiya zagaye ɗaya a cikin rami. Gabaɗaya magana, ribar bandwidth na Laser fiber yana da girman gaske, kuma adadi mai yawa na hanyoyin madaidaiciya suna aiki a lokaci guda. Jimlar yawan hanyoyin da Laser zai iya ɗauka ya dogara da tazarar yanayin tsayin daka ∆ν da ribar bandwidth na matsakaicin riba. Karamin tazarar yanayin tsayin daka, mafi girman fa'idar bandwidth na matsakaici, kuma ana iya tallafawa ƙarin hanyoyin madaidaiciya. Akasin haka, ƙananan.
3. Quasi-ci gaba da Laser (QCW Laser): Yana da yanayin aiki na musamman tsakanin ci gaba da laser lasers (CW) da laser pulsed. Yana samun babban fitowar wuta nan take ta hanyar dogayen bugun jini na lokaci-lokaci (zagayowar aiki yawanci ≤1%) yayin da yake riƙe matsakaicin matsakaicin matsakaici. Ya haɗu da kwanciyar hankali na ci gaba da laser tare da mafi girman ikon amfani da laser pulsed.
Ƙa'idar fasaha: QCW Lasers load modulation modules a cikin ci gabaLaserda'irar don yanke ci gaba da lasers cikin babban aiki sake zagayowar bugun jini jerin, cimma m sauyawa tsakanin ci gaba da bugun jini halaye. Babban fasalinsa shine tsarin "fashe na ɗan gajeren lokaci, sanyaya na dogon lokaci". Sanyaya a cikin ratar bugun jini yana rage tarin zafi kuma yana rage haɗarin nakasar kayan zafi.
Abũbuwan amfãni da fasali: Haɗe-haɗe-haɗe-haɗe-haɗe-haɗe-haɗe-haɗe-haɗe-hade: Yana haɗu da kololuwar ikon yanayin bugun jini (har zuwa sau 10 matsakaicin ikon ci gaba da yanayin) tare da babban inganci da kwanciyar hankali na ci gaba da yanayin. "
Ƙananan amfani da makamashi: Babban ƙarfin jujjuyawar wutar lantarki da ƙarancin amfani na dogon lokaci. "
Ingancin katako: Babban ingancin katako na Laser fiber yana goyan bayan madaidaicin micro-machining.
Lokacin aikawa: Nuwamba-10-2025