Phakathi neminyaka eyishumi edlule, ngokuthuthuka okuqhubekayo komthombo wepompo kanye nesakhiwo se-laser, ubuchwepheshe be-fiber laser buye baba ngcono kakhulu. Ngokusekelwe ku-doped optical fibre (YDF-Laser) isetshenziswa kakhulu ezimbonini, ocwaningweni lwesayensi, njll. ngenxa yokusebenza kahle okuphezulu kokuguqulwa kukagesi-optical, ikhwalithi engcono ye-beam nokuzinza.
Umdwebo1. Izinga lokumuncwa kwe-Spectral lezinto ezihlukahlukene zensimbi
Amalaser anamuhla wefiber yemodi eyodwa enamandla amakhulu kade akwazi ukusebenzisa amandla okukhipha amandla edijithali ezinga le-KW, okwenza ama-laser anjalo emkhakheni wokucubungula insimbi. Ngaphansi kwezimo zamandla okukhipha ukukhanya okufanayo, ngenxa yezinga lokumunca elihlukile, i-micron fibre laser engu-1 esekelwe kufayibha yabantu abadala ithuthukiswa kakhulu lapho i-CO2 laser yama-microns angu-10 isebenza kahle kakhulu kunempahla yensimbi. Umdwebo 1 unikeza izinga lokumuncwa kwe-spectral lezinto ezihlukene zensimbi, ezingabonakala emfanekisweni wokuthi izinto eziningi zensimbi ezinezici zokumuncwa ze-spectrum zibonisa ukuthambekela kokuncipha njengoba ubude beza obubonakalayo bukhula. Izinto zensimbi ngokusobala zinamandla kunobude beza obuphumayo obungaba ngu-1070 nm uma kuqhathaniswa nobude beza obuphumayo be-CO2 laser ku-CO2 laser ku-10.6um. Ikakhulukazi, izinga lokumuncwa kwensimbi yensimbi ngaphansi kwe-1070 nm wavelength lingaphansi ngokuphindwe ka-6 kunezimo ze-wavelength engu-10.6um.
Umdwebo 2. Ukumuncwa okuhlobene kwe-aluminosilicate ne-phosphosilicate (YB) fibre ku-800-1100 nm spectrum
Ngenxa yokuthi i-optical fibre ehlanganisiwe inophawu oluqinile lokumunca lwe-976 nm kanye ne-915 nm wavelength, ama-laser anjalo ampontshwa ikakhulukazi i-semiconductor laser (LD) ekhipha ubude begagasi obungenhla. I-Fig 2 iyimicu emibili evamile ene-doped optical kumazinga okumunca ahlobene we-800 kuya ku-1100 nm spectroscopy, futhi kukhona isici esibalulekile sokumuncwa esiqongweni esiseduze ne-915 nm kanye ne-976 nm. Izinga lokumunca lamaza okukhanya angu-976nm ku-aluminosilicate dumping fiber cishe liphindwe kathathu igagasi lokukhanya elingu-915 nm, futhi izinga lokumunca langaphambili ku-phosphosilicate licishe libe izikhathi ezi-5 kokugcina. Ububi obunjalo buhlukile, okusho ukuthi ama-laser anjalo asebenzisa ubuchwepheshe bepompo obungu-976nm LD ukuze azuze ukuguqulwa okuphakeme kokukhanya okukhanyayo. Ngesikhathi esifanayo, ukumuncwa okuphezulu kusho ukunciphisa ngokuphumelelayo ubude be-fiber, ngaleyo ndlela kunciphise imiphumela eyingozi engaqondile ngokwezinga elithile.
I-Fig.3 Ijika le-Photon Dinoff (PD) Ukulahlekelwa Izinyathelo Ezihlukile ze-YB Ion Energy.
Njengamanje, ama-laser e-doped fiber enziwe emhlabeni adinga ukubhekana nezinkinga ze-photodational. Le nkinga idala ukwehla okukhulu kwamandla okukhipha i-laser, ukuzinza nempilo yokusebenza. Ubumnyama be-Photon Lo mkhuba ubikwa nangenani elikhulu lama-laser fiber ion-doped. Ngokuvamile kubhekwa ukuthi lesi simo sibangelwa isikhungo sombala esikhiqizwe ku-matrix yengilazi. Ucwaningo lwangaphambilini luphakamise indlela eningi engenzeka yokuxazulula le dacte ye-photon, okuhlanganisa i-co-doped phosphorus ku-fiber, kusetshenziswa i-laser engu-405 nm, i-photobleaching, ngisho kusetshenziswa izinga lokushisa eliphezulu, ukukhishwa kwe-photon decimensing ye-photon kwenzeka. . Phakathi kwabo, nakuba i-phosphorus ingacindezelwa ngokuphumelelayo, ukulahlekelwa kwesizinda kanye nokuvuleka kwezinombolo kuyanda.
Ucwaningo lwangaphambilini lwethimba le-Koponen, ku-photon mnyama lubonise ukuthi isivinini sokuthatha isithombe sincike kakhulu ekugxilweni kwezibungu ezivusa amadlingozi, okuwukuguqulwa kwesimo samandla kwe-ion (YB Inversion Rate). Bathole ukuthi amazinga okuthatha ama-photon ayelingana nezikhathi ezingu-7 kuzinga lokuhlehla kwamandla e-ionic. Ijika le-photon lokulahlekelwa okugxilile ngokuhamba kwesikhathi ku-Fig 3 ku-Fig 3 inikezwe ku-Fig 3. Idatha inembile kakhulu ukuthi izinga lokumnyama kwe-photon likhuphuka kakhulu ngokunyuka kokuhlehliswa kwamandla.
I-Fig 4, YB Ion Energy Reverse Rate Njenge-Pump Power Change Curve ngaphansi kwe-976 Nm kanye ne-920 NM Pump Condition (Cabanga ukuthi idatha yezinga lokuhlehla ishelela ngokwanele uma ukuhluka okujwayelekile kungaphansi kuka-1%).
Izinga lokuhlehla kwesimo samandla ku-fiber ene-doped lithintwa isisindo sefayibha, amandla wepompo, impendulo yokukhanya, nobude begagasi be-wavenge yokukhanya kwepompo. Ubude beza beza bokukhanya kwephampu bungacindezelwa kakhulu ngokwezinga elikhulu. Ukuguqulwa kwesimo samandla kuchazwa cishe njengesilinganiso sokumuncwa kwesithombe esinesigaba esiphambanayo sokukhishwa okufanayo kumaza okukhanya kwephampu ethile, bese isimo samandla se-doped fiber sitholwa ngaphansi kwezimo ezimbili zokukhanya kwephampu okungu-976 nm no-920 nm. Izinga lokuhlehla liyahlukahluka ngokushintsha kwamandla wepompo (Fig 4). Nakuba i-spectrum yokumuncwa ku-FIG 2 ku-FiG 2 yokuqala ikhomba ukuthi izici zokumunca zokukhanya kwe-wavelength engu-976nm zinamandla kakhulu kunamanye amaza amaza, kodwa ngenxa yokuthi ukukhanya kwe-wavelength engu-976 nm kukhulu uma kuqhathaniswa, ekugcineni kutholwa ukukhanya kwephampu kunase-in. 920 nm. Amandla aphansi esimweni aphansi. Nakuba idatha ingazange inikeze ngokuqondile ukuguqulwa kwesimo samandla sephampu engu-915 nm, kusengenzeka ukuqagela ukuthi umthombo wokukhanya wepompo ye-976nm unamandla anamandla okuphikisa i-optical sub-profiling kunangaphambili.
Nakuba indlela yepompo ye-976nm inezinga eliphezulu lokumunca kanye nokusebenza kahle kokuguqulwa kokukhanya, inganciphisa ngempumelelo ubude be-fiber yokuthola, futhi umphumela oyingozi we-photon canache ungancishiswa, kodwa uhlobene nemodi yepompo ye-915 nm ekwelapheni i-fiber nokuhlanganisa. . Ubuchwepheshe bunzima kakhulu. Ngaphezu kwalokho, i-spectrum yokumuncwa yefayibha ehlanganisiwe kububanzi obungu-976 nm incane kakhulu. Ushintsho lwamaza amaza olubangelwa ukushintshashintsha kwezinga lokushisa lomthombo wephampu lungabangela amandla okukhipha i-laser ukuthi angazinzi, futhi lobu buchwepheshe bepompo bunesidingo esiqine kakhulu sohlelo lokulawula okushisayo lwe-laser. Ngenxa yalokhu, abakhiqizi be-laser abambalwa kuphela abafana ne-IPG yaseJalimane, i-United States Coherent-Rofin, kanye ne-US GW nabanye abakhiqizi basebenzisa umthombo wepompo we-nm ongu-976 kumalaser wezimboni ezinkulu.
Isikhathi sokuthumela: Jul-27-2021