Ireferensi yokukhethaI-fiber laser yemodi eyodwa
Kuzicelo ezingokoqobo, ukukhetha imodi eyodwa efanelekilei-fiber laseridinga ukukala okuhlelekile kwamapharamitha ahlukahlukene ukuze kuqinisekiswe ukuthi ukusebenza kwayo kufana nezidingo ezithile zohlelo lokusebenza, indawo yokusebenza kanye nemikhawulo yesabelomali. Lesi sigaba sizohlinzeka ngendlela esebenzayo yokukhetha esekelwe ezidingweni.
Isu lokukhetha elisuselwe kuzimo zohlelo lokusebenza
Izidingo zokusebenza zeama-laserziyahlukahluka kakhulu kuzo zonke izimo zohlelo lokusebenza. Isinyathelo sokuqala ekukhetheni ukucacisa izimfuno eziwumongo zesicelo.
Ukucutshungulwa kwezinto ezinembile kanye nokukhiqizwa kwe-nano encane: Izinhlelo ezinjalo zihlanganisa ukusika okuhle, ukubhola, ukudayela kwe-wafer ye-semiconductor, ukumakwa kweleveli ye-micron nokuphrinta kwe-3D, njll. Zinezidingo eziphakeme kakhulu zekhwalithi ye-beam nosayizi wendawo ogxilile. Ilaser ene-M² factor esondele kakhulu ku-1 (efana no-<1.1) kufanele ikhethwe. Amandla okukhiphayo adinga ukunqunywa ngokusekelwe kubukhulu bezinto ezibonakalayo kanye nesivinini sokucubungula. Ngokuvamile, amandla asukela kumashumi kuye kwamakhulu ama-watts angahlangabezana nezidingo zokucubungula okuningi okuncane. Ngokwe-wavelength, i-1064nm iyisinqumo esikhethwayo sokucutshungulwa kwezinto eziningi zensimbi ngenxa yezinga layo eliphezulu lokumuncwa kanye nezindleko eziphansi ngewathi ngayinye yamandla e-laser.
Ucwaningo lwesayensi kanye nesilinganiso esiphezulu: Izimo zohlelo lokusebenza zihlanganisa ama-tweezers optical, i-cold atom physics, i-high-resolution spectroscopy kanye ne-interferometry. Lezi zinkambu zivame ukuba nokuphishekela okwedlulele kwe-monochromaticity, ukuzinza kwemvamisa nokusebenza komsindo wama-lasers. Amamodeli anobubanzi bomugqa obuncane (ngisho nefrikhwensi eyodwa) nomsindo ophansi kufanele anikezwe kuqala. Ubude begagasi kufanele bukhethwe ngokusekelwe kumugqa we-resonance we-athomu ethile noma i-molecule (isibonelo, i-780nm ivame ukusetshenziselwa ukupholisa ama-athomu e-rubidium). Okuphumayo kokulungisa okuchemile kuvamise ukuthi kuyadingeka ukuze kuhlolwe iziphazamiso. Isidingo samandla ngokuvamile asiphezulu, futhi amakhulu amaningana ama-milliwatts kuya kuma-watts amaningana ngokuvamile anele.
I-Medical and Biotechnology: Izicelo zifaka ukuhlinzwa kwamehlo, ukwelashwa kwesikhumba kanye ne-fluorescence microscopy imaging. Ukuphepha kwamehlo ukucatshangelwa okuyinhloko, ngakho-ke ama-laser anamaza wamaza angu-1550nm noma 2μm, asebhandeni lokuphepha kweso, avame ukukhethwa. Kuzinhlelo zokusebenza zokuxilonga, ukunakwa kudingeka kukhokhwe ekuzinzeni kwamandla; Ngezicelo zokwelapha, amandla afanele kufanele akhethwe ngokusekelwe ekujuleni kokwelashwa kanye nezidingo zamandla. Ukuguquguquka kokudluliswa kwe-optical kuyinzuzo enkulu ezinhlelweni ezinjalo.
Ukuxhumana Nokuzwa: I-Fiber optic sensing, i-liDAR kanye nokuxhumana kwe-space Optical kuyizinhlelo zokusebenza ezijwayelekile. Lezi zimo zidingalaserukuba nokuthembeka okuphezulu, ukuguquguquka kwemvelo kanye nokuzinza kwesikhathi eside. Ibhendi engu-1550nm isiphenduke inketho ekhethwayo ngenxa yokulahleka kwayo okuphansi kokudluliswa kwamafiber optical. Kuzinhlelo zokuhlonza ezihambisanayo (njenge-lidar ehambisanayo), i-laser ehlukanisiwe ngomugqa enobubanzi obuncane kakhulu bomugqa iyadingeka njenge-oscillator yendawo.
2. Ukuhlunga okubalulekile kwamapharamitha angukhiye
Ngokubhekene nemingcele eminingi, izinqumo zingenziwa ngokusekelwe kulokhu okubalulekile okulandelayo:
Amapharamitha anqumayo: Okokuqala, nquma ubude begagasi nekhwalithi yebhimu. Ubude begagasi bunqunywa ngezidingo ezibalulekile zohlelo lokusebenza (izici zokumunca okubalulekile, amazinga okuphepha, imigqa yokuzwakala kwe-athomu), futhi ngokuvamile asikho isikhala sokuyekethisa. Ikhwalithi ye-beam inquma ngokuqondile ukuthi kungenzeka yini uhlelo lokusebenza. Isibonelo, ukunemba kwemishini akukwazi ukwamukela amalaser ane-M² ephezulu kakhulu.
Amapharamitha wokusebenza: Okwesibili, naka amandla okukhiphayo kanye nobubanzi bomugqa/ukuhlukaniswa. Amandla kufanele ahlangabezane nomkhawulo wamandla noma izimfuneko zokusebenza kahle zohlelo lokusebenza. Ububanzi bomugqa kanye nezici ze-polarization zinqunywa ngokusekelwe emzileni othile wobuchwepheshe wohlelo lokusebenza (njengokuthi kuyaphazamiseka noma ukuphindaphindeka kabili). Amapharamitha asebenzayo: Okokugcina, cabangela ukuzinza (njengokuqina kwamandla okukhipha isikhathi eside), ukwethembeka (isikhathi sokusebenza esingenaphutha), ukusetshenziswa kwamandla evolumu, ukuhambisana kwesixhumi esibonakalayo kanye nezindleko. Le mingcele ithinta ubunzima bokuhlanganisa kanye nezindleko eziphelele zobunikazi belaser endaweni yokusebenza yangempela.
3. Ukukhethwa nokwahlulela phakathi kwemodi eyodwa kanye nemodi eminingi
Nakuba lesi sihloko sigxile kwimodi eyodwai-fiber lasers, kubalulekile ukuqonda ngokucacile isidingo sokukhetha imodi eyodwa ekukhetheni kwangempela. Lapho izimfuneko eziyinhloko zohlelo lokusebenza kuwukunemba okuphezulu kokucubungula, indawo encane ethinteke kakhulu ekushiseni, amandla okugxila ekugcineni noma ibanga elide lokudlulisela, i-fibre yemodi eyodwa ukuphela kwenketho elungile. Ngokuphambene, uma uhlelo lokusebenza ikakhulukazi lubandakanya ukushisela kwepuleti eliwugqinsi, ukwelashwa kwendawo enkulu noma ukudluliswa kwamandla aphezulu ebangeni elifushane, futhi imfuneko yokunemba ngokuphelele ingekho phezulu, khona-ke ama-laser we-multimode fiber angase abe inketho eyongayo futhi engokoqobo ngenxa yamandla awo aphelele kanye nezindleko eziphansi.
Isikhathi sokuthumela: Nov-12-2025