Gabatar dalasers masu ƙarfin fiber
Ana amfani da na'urorin laser na fiber pulsedna'urorin Laserwaɗanda ke amfani da zare da aka haɗa da ions na ƙasa masu wuya (kamar ytterbium, erbium, thulium, da sauransu) a matsayin matsakaicin gain. Sun ƙunshi matsakaicin gain, ramin resonant na gani, da tushen famfo. Fasahar samar da bugun jini ta ƙunshi fasahar Q-switching (matakin nanosecond), kulle yanayin aiki (matakin picosecond), kulle yanayin aiki mara aiki (matakin femtosecond), da fasahar ƙara ƙarfin oscillation (MOPA).
Aikace-aikacen masana'antu sun haɗa da yanke ƙarfe, walda, tsaftacewar laser da yanke batirin lithium TAB a cikin sabon filin makamashi, tare da ƙarfin fitarwa mai yanayi da yawa wanda ya kai matakin watt dubu goma. A fannin lidar, ana amfani da lasers masu ƙarfin 1550nm, tare da ƙarfin bugun su mai yawa da fasalulluka masu aminci ga ido, a cikin tsarin radar mai hawa da na abin hawa.
Manyan nau'ikan samfuran sun haɗa da nau'in Q-switched, nau'in MOPA da fiber mai ƙarfina'urorin laser masu bugun jiniNau'i:
1. Laser ɗin fiber mai canza Q: Ka'idar sauya Q ita ce ƙara na'urar da za a iya daidaita ta a cikin laser. A mafi yawan lokutan, laser ɗin yana da babban asara kuma kusan babu fitowar haske. A cikin ɗan gajeren lokaci, rage asarar na'urar yana ba wa laser damar fitar da bugun zuciya mai ƙarfi. Ana iya samun laser ɗin fiber mai canza Q ko dai a zahiri ko kuma a zahiri. Fasaha mai aiki yawanci tana haɗa da ƙara mai daidaita ƙarfi a cikin rami don sarrafa asarar laser. Dabaru masu wucewa suna amfani da masu ɗaukar ruwa ko wasu tasirin da ba su da layi kamar watsawar Raman da aka ƙarfafa da watsawar Brillouin don samar da hanyoyin daidaitawa na Q. Hawan da galibi ake samarwa ta hanyoyin sauyawa na Q suna matakin nanosecond. Idan za a samar da gajerun bugun, ana iya cimma shi ta hanyar hanyar kulle yanayin.
2. Laser ɗin fiber mai kullewa ta hanyar mode: Yana iya samar da bugun ultrashort ta hanyar hanyoyin kullewa ta hanyar aiki ko hanyoyin kullewa ta hanyar passive mode. Saboda lokacin amsawa na modulator, faɗin bugun da aka samar ta hanyar active mode-locking yawanci yana kan matakin picosecond. Passive mode-locking yana amfani da na'urorin kullewa ta hanyar passive mode, waɗanda ke da ɗan gajeren lokacin amsawa kuma suna iya samar da bugun pulses akan sikelin femtosecond.
Ga taƙaitaccen gabatarwa game da ƙa'idar kulle mold.
Akwai nau'ikan yanayi marasa adadi a cikin ramin resonant na laser. Ga rami mai siffar zobe, tazarar mita na yanayin tsayi daidai yake da /CCL, inda C shine saurin haske kuma CL shine tsawon hanyar gani na hasken siginar yana tafiya zagaye ɗaya a cikin ramin. Gabaɗaya, girman gain na lasers na fiber yana da girma sosai, kuma adadi mai yawa na yanayin tsayi suna aiki a lokaci guda. Jimlar adadin yanayin da laser zai iya ɗauka ya dogara da tazarar yanayin tsayi ∆ν da kuma girman gain na matsakaiciyar gain. Ƙaramin tazarar yanayin tsayi, mafi girman girman gain na matsakaici, kuma ana iya tallafawa ƙarin yanayin tsayi. Akasin haka, ƙasa da haka.
3. Laser mai ci gaba da aiki (Lasisar QCW): Yana aiki ne na musamman tsakanin laser mai ci gaba da aiki (CW) da laser mai ci gaba da aiki. Yana samun babban ƙarfin fitarwa nan take ta hanyar bugun lokaci-lokaci (zagayen aiki yawanci ≤1%) yayin da yake riƙe da ƙarancin matsakaicin ƙarfi. Yana haɗa kwanciyar hankali na laser mai ci gaba da aiki tare da babban fa'idar ƙarfin laser mai ci gaba.
Ka'idar fasaha: QCW lasers load modulation modules a cikin ci gabalaserda'ira don yanke lasers masu ci gaba zuwa jerin bugun jini na zagaye mai aiki, wanda ke cimma sauyawa mai sassauƙa tsakanin yanayin bugun jini mai ci gaba da kuma yanayin bugun jini. Babban fasalinsa shine tsarin "fashewa na ɗan gajeren lokaci, mai sanyaya na dogon lokaci". Sanyaya a cikin gibin bugun jini yana rage tarin zafi kuma yana rage haɗarin lalacewar yanayin zafi na abu.
Amfani da fasaloli: Haɗin yanayi biyu: Yana haɗa ƙarfin bugun zuciya (har sau 10 matsakaicin ƙarfin yanayin ci gaba) tare da ingantaccen aiki da kwanciyar hankali na yanayin ci gaba.
Ƙarancin amfani da makamashi: Ingantaccen amfani da wutar lantarki da kuma ƙarancin kuɗin amfani na dogon lokaci.
Ingancin katako: Ingancin katako mai kyau na lasers na fiber yana tallafawa ingantaccen injin sarrafa micro.
Lokacin Saƙo: Nuwamba-10-2025