Umgaqo osisiseko weiilaser zefiber zendlela enye
Ukuveliswa kwelaser kufuna ukuhlangabezana neemeko ezintathu ezisisiseko: ukuguqulwa kwabemi, indawo efanelekileyo ye-resonant, kunye nokufikelela kwindawolaseri-threshold (inzuzo yokukhanya kwi-cavity resonant kufuneka ibe mkhulu kunokulahlekelwa). Indlela yokusebenza ye-fiber lasers yemowudi enye isekwe ngokuchanekileyo kule migaqo isisiseko yomzimba kwaye ifezekisa ukulunga komsebenzi ngolwakhiwo olukhethekileyo lwefiber waveguides.
Imitha evuselelweyo kunye nokuguqulwa kwabemi sisiseko sokwenziwa kweelases. Xa amandla okukhanya akhutshwa ngumthombo wempompo (ngokuqhelekileyo i-semiconductor laser diode) ifakwe kwi-fiber yenzuzo efakwe kwi-ion yomhlaba enqabileyo (efana ne-Ytterbium Yb³⁺, i-erbium Er³⁺), ii-ion zomhlaba ezinqabileyo zifunxa amandla kunye nokuguquka ukusuka kumhlaba ophantsi ukuya kwimeko echulumancisayo. Xa inani leeyoni kwisimo esichulumancisayo lidlula kwindawo ephantsi, imo yokuguqulwa kwabemi yenziwa. Ngeli xesha, i-photon yesiganeko iya kubangela i-radiation evuselelweyo ye-ion-state ion, ivelise iifoto ezintsha ze-frequency, isigaba kunye nolwalathiso njenge-photon yesiganeko, ngaloo ndlela ifezekisa ukukhulisa ukukhanya.
Eyona nto iphambili yemowudi enyei-fiber lasersilele kwidayamitha engundoqo ecikizekileyo (ngokuqhelekileyo yi-8-14μm). Ngokutsho kwethiyori ye-wave optics, undoqo onjalo unokuvumela kuphela imowudi enye ye-electromagnetic field (okt, imowudi esisiseko LP₀₁ okanye i-HE₁₁ mode) ukuba idluliselwe ngokuzinzileyo, oko kukuthi, imowudi enye. Oku kuphelisa ingxaki ye-intermodal dispersion ekhoyo kwimicu ye-multimode, oko kukuthi, i-pulse yokwandisa isiganeko esibangelwa ukusasazwa kweendlela ezahlukeneyo kwizantya ezahlukeneyo. Ngokwembono yeempawu zothumelo, umahluko wendlela yokukhanya okusasaza ecaleni kwendlela ye-axial kwimicu ye-optical yemowudi enye incinci kakhulu, nto leyo eyenza ukuba umqadi ophumayo ube nokuhambelana okugqibeleleyo kwendawo kunye nokuhanjiswa kwamandla e-Gaussian, kunye nomgangatho we-beam i-M² inokusondela kwi-1 (M²=1 yomgangatho ofanelekileyo weGaussian).
I-Fiber lasers ngabameli ababalaseleyo besizukulwana sesithathuiteknoloji laser, Esebenzisa umhlaba onqabileyo-doped glass fibers njengendlela yokuzuza. Kule minyaka ilishumi idlulileyo, iilaser zefiber zemowudi enye ziye zathatha inxaxheba ebaluleke ngakumbi kwimarike yelaser yehlabathi, ngenxa yeenzuzo zazo zokusebenza ezizodwa. Xa kuthelekiswa nemultimode fiber lasers okanye i-laser yemveli eqinileyo, i-fiber lasers yemowudi enye inokuvelisa umqadi ofanelekileyo weGaussian kunye nomgangatho womqadi kufutshane ne-1, okuthetha ukuba umqadi ungaphantse ufikelele kwithiyori encinci ye-divergence Angle kunye nendawo ekugxilwe kuyo. Olu phawu lwenza ukuba lungenakuphinda luthathelwe indawo kwimimandla yokusetyenzwa kunye nokulinganisa efuna ukuchaneka okuphezulu kunye nefuthe eliphantsi lobushushu.
Ixesha lokuposa: Nov-19-2025