Isimiso esiyisisekelo se-ama-laser efayibha yemodi eyodwa
Ukukhiqizwa kwe-laser kudinga ukuhlangabezana nezimo ezintathu eziyisisekelo: ukuguqulwa kwabantu, umgodi ofanele wokuzwela, kanye nokufinyelelai-laserumkhawulo (ukwanda kokukhanya emgodini ozwakalayo kumele kube kukhulu kunokulahlekelwa). Indlela yokusebenza yama-fiber lasers e-single-mode isekelwe ngqo kulezi zimiso eziyisisekelo zomzimba futhi ifinyelela ukwenziwa ngcono kokusebenza ngesakhiwo esikhethekile sama-fiber waveguides.
Imisebe evuselelwe kanye nokuguqulwa kwenani labantu kuyisisekelo esibonakalayo sokukhiqizwa kwama-laser. Lapho amandla okukhanya akhishwa umthombo wephampu (ngokuvamile i-semiconductor laser diode) efakwa ku-gain fiber ehlanganiswe nama-ion angavamile omhlaba (njenge-Ytterbium Yb³⁺, i-erbium Er³⁺), ama-ion angavamile omhlaba amunca amandla futhi aguqukele esimweni somhlaba aye esimweni sokuzijabulisa. Lapho inani lama-ion esimweni sokuzijabulisa lidlula lelo esimweni somhlaba, kwakheka isimo sokuguquguquka kwenani labantu. Kuleli qophelo, i-photon yesigameko izoqala imisebe evuselelwe ye-ion yesimo sokuzijabulisa, ikhiqize ama-photon amasha anomsinga ofanayo, isigaba kanye nesiqondiso njenge-photon yesigameko, ngaleyo ndlela kufezwe ukukhulisa ukukhanya.
Isici esiyinhloko semodi eyodwaama-laser efayibhaitholakala kububanzi bayo obuncane kakhulu be-core (ngokuvamile 8-14μm). Ngokusho kwethiyori ye-wave optics, i-core enjalo encane ingavumela kuphela imodi eyodwa yensimu ye-electromagnetic (okungukuthi, imodi eyisisekelo ye-LP₀₁ noma imodi ye-HE₁₁) ukuthi idluliselwe ngokuzinzile, okungukuthi, imodi eyodwa. Lokhu kuqeda inkinga yokusabalala kwe-intermodal ekhona kuma-fiber e-multimode, okungukuthi, isenzakalo sokwandisa i-pulse esibangelwa ukusabalala kwama-modi ahlukene ngesivinini esihlukile. Ngokombono wezimpawu zokudlulisa, umehluko wendlela yokukhanya okusabalala eceleni kwesiqondiso se-axial kuma-fiber optical e-mode eyodwa mncane kakhulu, okwenza i-output beam ibe nokubumbana okuphelele kwendawo kanye nokusatshalaliswa kwamandla e-Gaussian, kanye ne-beam quality factor M² ingasondela ku-1 (M²=1 ye-beam ye-Gaussian efanelekile).
Ama-laser e-fiber angabameleli abavelele besizukulwane sesithathuubuchwepheshe be-laser, ezisebenzisa imicu yengilazi exutshwe nezinto ezingavamile zomhlaba njengendlela yokuthola inzuzo. Eminyakeni eyishumi edlule, ama-laser e-fiber yemodi eyodwa abe nesabelo esibaluleke kakhulu emakethe ye-laser yomhlaba wonke, ngenxa yezinzuzo zawo zokusebenza ezihlukile. Uma kuqhathaniswa nama-laser e-fiber yemodi eminingi noma i-laser yendabuko yesimo esiqinile, ama-laser e-fiber yemodi eyodwa angakhiqiza umsebe we-Gaussian ofanele onekhwalithi yomsebe eseduze no-1, okusho ukuthi umsebe ungacishe ufinyelele i-Angle encane yokuhlukana kanye nendawo encane egxile kuyo. Lesi sici sikwenza kungathathelwa indawo emikhakheni yokucubungula nokulinganisa edinga ukunemba okuphezulu kanye nomthelela ophansi wokushisa.
Isikhathi sokuthunyelwe: Novemba-19-2025