Menyekanishafibre pulsed laseri
Fibre yasunitswe laseri niibikoresho bya laserikoresha fibre ikozwe hamwe nisi idasanzwe yisi (nka ytterbium, erbium, thulium, nibindi) nkinyungu yo hagati. Zigizwe ninyungu ziciriritse, optique resonant cavity, nisoko ya pompe. Ikoranabuhanga ryayo rya pulse ririmo cyane cyane tekinoroji ya Q-ihinduranya (urwego rwa nanosekond), uburyo bwo gufunga uburyo (urwego rwa picosekond), uburyo bwo gufunga pasiporo (urwego femtosekond), hamwe nubuhanga bukuru bwa oscillation power amplification (MOPA).
Inganda zikoreshwa mu nganda zirimo gukata ibyuma, gusudira, gusukura lazeri na batiri ya lithium TAB ikata mu murima mushya w'ingufu, hamwe n'imbaraga nyinshi zisohoka zigera ku bihumbi icumi. Mu rwego rwa lidar, lazeri 1550nm, hamwe ningufu zazo zidasanzwe hamwe nibiranga amaso, bikoreshwa muburyo bwa radar hamwe na moteri.
Ubwoko bwibicuruzwa byingenzi birimo Q-yahinduwe, ubwoko bwa MOPA na fibre ikomeyelaseri. Icyiciro:
1. Mubihe byinshi, laser ifite igihombo kinini kandi hafi nta mucyo usohoka. Mugihe gito cyane, kugabanya igihombo cyibikoresho bituma lazeri isohora impanuka ngufi cyane. Q-yahinduwe fibre lazeri irashobora kugerwaho haba mubikorwa cyangwa byoroshye. Ikoranabuhanga rikora mubisanzwe ririmo kongeramo ubukana modulator imbere mu cyuho kugirango igenzure igihombo cya laser. Tekinike ya pasiporo ikoresha ibyuma byuzuza cyangwa izindi ngaruka zidafite umurongo nka Raman ikangura kandi ikangura Brillouin ikwirakwiza kugirango ikore Q-modulation. Imisemburo ikorwa muburyo bwa Q-guhinduranya ni kurwego rwa nanosekond. Niba impiswi ngufi zigomba kubyara, birashobora kugerwaho muburyo bwo gufunga uburyo.
2. Moderi ifunze fibre laser: Irashobora kubyara ultrashort pulses binyuze muburyo bukora-gufunga cyangwa uburyo bwo gufunga uburyo. Bitewe nigihe cyo gusubiza modulator, ubugari bwa pulse bwakozwe nuburyo bukora-gufunga muri rusange kurwego rwa picosekond. Uburyo bwa passiyo-gufunga ikoresha ibikoresho bya passiyo-bifunga ibikoresho, bifite igihe gito cyo gusubiza kandi birashobora kubyara pulses kurwego rwa femtosekond.
Hano hari intangiriro ngufi ku ihame ryo gufunga ibumba.
Hariho uburyo butabarika burebure muri laser resonant cavity. Ku cyuho kimeze nk'impeta, intera yinshuro yuburyo burebure buringaniye na / CCL, aho C ni umuvuduko wurumuri na CL ninzira ya optique yinzira yumucyo wikimenyetso kigenda urugendo rumwe ruzenguruka mu cyuho. Muri rusange, inyungu zingana na fibre ya fibre ni nini cyane, kandi umubare munini wuburyo burebure bukorera icyarimwe. Umubare rusange wuburyo lazeri ishobora kwakira biterwa nigihe kirekire intera intera ∆ν hamwe ninyungu yagutse yinyungu ziciriritse. Gutoya intera ndende, intera nini yo kwaguka kwagutse, kandi nuburyo burebure burashobora gushyigikirwa. Ibinyuranye, bike.
3. Quasi-ikomeza laser (QCW laser): Nuburyo bwihariye bwakazi hagati yumurongo uhoraho (CW) na lazeri. Igera ku mbaraga nyinshi zihita zisohoka binyuze mumwanya muremure (cycle duty mubisanzwe ≤1%) mugihe ikomeza imbaraga nke ugereranije. Ihuza ituze rya lazeri ikomeza hamwe nimbaraga zo hejuru zingirakamaro za lazeri.
Ihame rya tekiniki: QCW lasers yikoreza modulisiyo muburyo bukomezalaserumuzenguruko kugirango ugabanye lazeri ikomeza murwego rwo hejuru rwikurikiranya ryimisemburo, kugera ku guhinduranya byoroshye hagati yuburyo bukomeza na pulse. Ibyingenzi byingenzi ni "uburyo bwo guturika igihe gito, gukonjesha igihe kirekire". Gukonjesha mu cyuho cya pulse bigabanya kwirundanya k'ubushyuhe kandi bigabanya ibyago byo guhindura ibintu.
Ibyiza nibiranga: Kwishyira hamwe-muburyo bubiri: Ihuza imbaraga zimpanuka zuburyo bwa pulse (kugeza inshuro 10 imbaraga zisanzwe zuburyo bukomeza) hamwe nubushobozi buhanitse kandi butajegajega muburyo bukomeza.
Gukoresha ingufu nke: Gukoresha amashanyarazi menshi-optique hamwe nigiciro gito cyo gukoresha.
Ubwiza bwibiti: Ubwiza buhanitse bwa fibre lazeri bushyigikira mikoro ikora neza.
Igihe cyo kohereza: Ugushyingo-10-2025