Eminyakeni yamuva nje, ukusetshenziswa kwe-pulsed fiber lasers emkhakheni wokumaka nge-laser kuye kwathuthuka ngokushesha, phakathi kwazo izinhlelo zokusebenza emkhakheni wemikhiqizo ye-electronic 3C, imishini, ukudla, ukupakisha, njll.
Njengamanje, izinhlobo zamalaser we-pulsed fibre asetshenziswa ekumaka nge-laser emakethe ikakhulukazi zifaka ubuchwepheshe obushintshwayo be-Q kanye nobuchwepheshe be-MOPA.I-MOPA (I-Master Oscillator Power-Amplifier) i-laser ibhekisela esakhiweni se-laser lapho i-laser oscillator kanye ne-amplifier kukhishwa khona.Embonini, i-laser ye-MOPA isho i-laser ye-nanosecond pulse fiber eyingqayizivele futhi “ehlakaniphe kakhulu” eyakhiwe umthombo wembewu we-laser semiconductor oshayelwa ama-pulses kagesi kanye ne-fiber amplifier."Ukuhlakanipha" kwayo kubonakala ikakhulukazi kububanzi be-pulse okukhiphayo bungalungiseka ngokuzimela (ububanzi be-2ns-500ns), futhi imvamisa yokuphindaphinda ingaba phezulu njenge-megahertz.Isakhiwo somthombo wembewu ye-laser ye-fiber eshintshiwe ye-Q siwukufaka imoduli yokulahlekelwa ku-fiber oscillator cavity, ekhiqiza ukuphuma kokukhanya kwe-nanosecond pulse enobubanzi obuthile bokushaya kwenhliziyo ngokushintsha ngezikhathi ezithile ukulahleka kokubona emgodini.
Isakhiwo sangaphakathi se-laser
Umehluko wesakhiwo sangaphakathi phakathi kwe-MOPA fibre laser kanye ne-Q-switched fibre laser ikakhulukazi usezindleleni ezihlukene zokukhiqiza zesignali yokukhanya kwe-pulse seed.I-MOPA fibre laser pulse seed optical signal ikhiqizwa i-electric pulse driving semiconductor laser chip, okungukuthi, isignali yokuphuma kwe-optical ishintshwa yisignali kagesi oshayelayo, ngakho inamandla kakhulu ekukhiqizeni imingcele ye-pulse ehlukene (ububanzi be-pulse, imvamisa yokuphindaphinda , i-pulse waveform namandla, njll.) Ukuguquguquka.I-pulse seed optical signal ye-Q-switched fibre laser ikhiqiza ukuphuma kokukhanya okududuzayo ngokukhuphula ngezikhathi ezithile noma ukunciphisa ukulahleka kokubona endaweni ezwakalayo, ngesakhiwo esilula kanye nenzuzo yentengo.Kodwa-ke, ngenxa yethonya lamadivayisi okushintsha i-Q, imingcele ye-pulse inemikhawulo ethile.
Amapharamitha okukhanya okukhiphayo
Ububanzi be-pulse be-MOPA fiber laser bungalungiseka ngokuzimela.Ububanzi be-pulse ye-MOPA fibre laser bunanoma yikuphi ukuthuna (ububanzi 2ns～500 ns).Ukuncipha kobubanzi be-pulse, iba yincane indawo ethinteke ukushisa, kanye nokunemba okuphezulu kokucubungula kungatholwa.Ububanzi be-pulse okukhiphayo kwe-laser ye-fiber eshintshiwe ye-Q abulungiseki, futhi ububanzi be-pulse ngokuvamile abushintshi kunani elithile elimisiwe phakathi kuka-80 ns no-140 ns.I-MOPA fibre laser inebanga elibanzi lokuphindaphinda imvamisa.I-re-frequency ye-MOPA laser ingafinyelela ekuphumeni kwefrikhwensi ephezulu ye-MHz.Imvamisa yokuphindaphinda ephezulu isho ukusebenza kahle okuphezulu kokucubungula, futhi i-MOPA isengagcina izici zamandla aphezulu ngaphansi kwezimo zokuphindaphinda okuphezulu.I-Q-switched fiber laser inqunyelwe izimo zokusebenza zeswishi ye-Q, ngakho-ke ububanzi befrikhwensi yokuphumayo buncane, futhi imvamisa ephezulu ingafinyelela ku-~100 kHz kuphela.
Isimo sohlelo lokusebenza
I-MOPA fibre laser inebanga elibanzi lokulungiswa kwepharamitha.Ngakho-ke, ngaphezu kokumboza ukucubungula izinhlelo zokusebenza zamalaser e-nanosecond avamile, ingaphinda isebenzise ububanzi bayo obuncane bokushaya kwenhliziyo obuhlukile, imvamisa yokuphindaphinda okuphezulu, namandla aphezulu aphezulu ukufeza ezinye izinhlelo zokusebenza zokucubungula ukunemba okuhlukile.njenge:
1.Ukusetshenziswa kweshidi le-aluminium oxide elingaphezulu
Imikhiqizo yanamuhla ye-elekthronikhi iba mncane futhi iba lula.Omakhalekhukhwini abaningi, amaphilisi, namakhompyutha asebenzisa i-aluminium oxide encane nelula njengegobolondo lomkhiqizo.Uma usebenzisa i-laser eshintshwayo ye-Q ukumaka izikhundla zokuqhuba epuleti elincane le-aluminium, kulula ukubangela ukuwohloka kwempahla, okuholela “ku-convex hulls” ngemuva, okuthinta ngqo ubuhle bokubukeka.Ukusetshenziswa kwamapharamitha we-MOPA laser amancane wobubanzi be-pulse kungenza into kungabi lula ukonakala, futhi ukufiphaza kuthambile futhi kukhanye kakhudlwana.Lokhu kungenxa yokuthi i-laser ye-MOPA isebenzisa ipharamitha yobubanzi obuncane be-pulse ukuze yenze i-laser ihlale entweni ibe mfushane, futhi inamandla anele okukhipha ungqimba lwe-anode, ukuze kucutshungulwe ukuhlubula i-anode ebusweni be-aluminium oxide encane. ipuleti, i-MOPA Lasers iyisinqumo esingcono.
2.Anodized aluminium isicelo blackening
Ukusebenzisa amalaser ukumaka izimpawu zokuhweba ezimnyama, amamodeli, imibhalo, njll. endaweni yezinto ze-aluminium anodized, esikhundleni sobuchwepheshe be-inkjet bendabuko kanye nosilika wesikrini, isetshenziswe kakhulu kumagobolondo emikhiqizo ye-electronic digital.
Ngenxa yokuthi i-MOPA pulsed fibre laser inobubanzi obubanzi be-pulse kanye nebanga lokulungiswa kwefrikhwensi yokuphindaphinda, ukusetshenziswa kobubanzi obuncane be-pulse kanye nemingcele yefrikhwensi ephezulu kungamaka ingaphezulu lento ngomphumela omnyama.Inhlanganisela ehlukene yamapharamitha nayo ingamaka amazinga ahlukene ampunga.umphumela.
Ngakho-ke, inokukhetha okwengeziwe kwemiphumela yenqubo yobumnyama obuhlukile nomuzwa wesandla, futhi iwumthombo wokukhanya okhethwayo wokwenza i-aluminiyamu e-anodized ibe mnyama emakethe.Ukumaka kwenziwa ngezindlela ezimbili: imodi yamachashazi namandla amachashazi alungisiwe.Ngokulungisa ukuminyana kwamachashazi, imiphumela ehlukahlukene ye-grayscale ingalingiswa, futhi izithombe ezenziwe ngokwezifiso nemisebenzi yezandla yomuntu siqu ingamakwa endaweni ye-anodized aluminium material.
3.Umbala we-laser wokumaka
Kuhlelo lokusebenza lombala wensimbi engagqwali, i-laser iyadingeka ukuthi isebenze ngobubanzi be-pulse amancane naphakathi namaza aphezulu.Ukushintsha kombala kuthinteka kakhulu yimvamisa namandla.Umehluko kule mibala uthintwa kakhulu amandla okuthinta okukodwa kwe-laser ngokwayo kanye nezinga lokugqagqana kwendawo yayo kokokusebenza.Ngenxa yokuthi ububanzi beshayela kanye nemvamisa ye-laser ye-MOPA zilungiseka ngokuzimela, ukulungisa eyodwa yazo ngeke kuthinte amanye amapharamitha.Basebenzisana ukuze bathole amathuba ahlukahlukene, angeke azuzwe ngelaser eshintshwayo ye-Q.Kuzinhlelo zokusebenza ezisebenzayo, ngokulungisa ububanzi be-pulse, imvamisa, amandla, isivinini, indlela yokugcwalisa, isikhala sokugcwalisa kanye neminye imingcele, ukuvumela nokuhlanganisa amapharamitha ahlukene, ungamaka okuningi kwemiphumela yayo yombala, imibala ecebile nethambile.Ezitsheni zensimbi engagqwali, okokusebenza kwezokwelapha nemisebenzi yezandla, amalogo amahle noma amaphethini angamakwa ukuze adlale umphumela omuhle wokuhlobisa.
Ngokuvamile, ububanzi be-pulse kanye nemvamisa ye-MOPA fibre laser zilungiseka ngokuzimela, futhi ububanzi bepharamitha yokulungisa bukhulu, ngakho ukucubungula kuhle, umphumela oshisayo uphansi, futhi unezinzuzo ezivelele ekumaka kweshidi le-aluminium oxide, i-aluminium anodized. blackening, futhi insimbi engagqwali umbala.Qaphela umthelela i-Q-switched fiber laser ayikwazi ukuzuza I-Q-switched fiber laser ibonakala ngamandla aqinile okumaka, anezinzuzo ezithile ekucubunguleni okujulile kokuqoshwa kwezinsimbi, kodwa umphumela wokumaka awulula uma kuqhathaniswa.Ezinhlelweni zokumaka ezijwayelekile, amalaser e-MOPA pulsed fibre aqhathaniswa namalaser efiber ashintshwayo e-Q, futhi izici zawo eziyinhloko ziboniswa kuthebula elilandelayo.Abasebenzisi bangakhetha i-laser efanele ngokwezidingo zangempela zokumaka izinto kanye nemiphumela.
I-MOPA fiber laser pulse ububanzi kanye nemvamisa kuyalungiseka ngokuzimela, futhi uhla lwepharamitha yokulungisa lukhulu, ngakho-ke ukucutshungulwa kuhle, umphumela oshisayo uphansi, futhi kunezinzuzo ezivelele ekumaka kweshidi le-aluminium oxide, i-anodized aluminium blackening, umbala wensimbi engagqwali, kanye neshidi lensimbi yokushisela.Umphumela i-Q-switched fibre laser awukwazi ukuwufinyelela.I-Q-switched fibre laser ibonakala ngamandla aqinile okumaka, anezinzuzo ezithile ekucubunguleni okujulile kokuqoshwa kwezinsimbi, kodwa umphumela wokumaka awulula uma kuqhathaniswa.
Ngokuvamile, ama-laser e-MOPA fibre angacishe amiselele amalaser efiber e-Q-switched fibers kuma-laser high-end marking and welding applications.Ngokuzayo, ukuthuthukiswa kwe-MOPA fibre lasers kuzothatha ububanzi obuncane be-pulse kanye namafrikhwensi aphezulu njengokuqondisa, futhi ngesikhathi esifanayo imashe ibheke emandleni aphezulu namandla aphezulu, iqhubeke nokuhlangabezana nezidingo ezintsha zokucutshungulwa kwezinto ezibonakalayo ze-laser, futhi iqhubeke ukuthuthukisa okufana ne-laser derusting kanye ne-lidar.Nezinye izindawo ezintsha zohlelo lokusebenza.
Isikhathi sokuthumela: Jul-18-2021
