Ulwakhiwo oluphambili lwei-laser yefayibha yemowudi enye
Ukusebenza okugqwesileyo kwe-single-modei-laser yefayibhaivela kuyilo lwazo oluchanekileyo lwesakhiwo sangaphakathi. Ukusebenza ngokubambisana okusebenzayo phakathi kwazo zonke izinto sisiseko sokufezekisa imveliso yelaser ezinzileyo nesemgangathweni ophezulu.
Umzekelo, ilaser ye-976nm enobuchule bokuguqula i-electro-optical obuphezulu isetyenziselwa ukutshaja ifayibha edibeneyo, emva koko isibane sembewu se-1064nm esinomgangatho olungileyo wemitha sisetyenziselwa ukukhokela ifayibha edibeneyo ehlawulisiweyo ukuze ikhuphe ilaser ye-1064nm enegunya eliphezulu. Okukhona amandla elaser ye-1064nm ephezulu, kokukhona kufuneka amandla kunye nobungakanani bomthombo wepompo.
Inkcazo eneenkcukacha zezinto eziphambili
Umthombo wepompo ngumthombo wamandla weileza, ngesiqheloi-laser ye-semiconductori-diode, ene-wavelength yokukhupha ehambelana nencochoyi yokufunxa ye-gain medium (umzekelo, i-ytterbium-doped fiber ihambelana ne-wavelength ye-915nm okanye i-976nm). I-laser yemo enye ifuna ukuba umthombo wokukhanya wepompo ube nokuhambelana okuphezulu kwendawo. Ke ngoko, ii-laser diode zemo enye ezidityanisiweyo zefiber zidla ngokusetyenziswa ukuqinisekisa ukuba ukukhanya kwepompo kunokufakwa ngokufanelekileyo kwi-fibre core entle yemo enye.
2. Iifayibha zeGain zezona ziphambili zokwenza i-laser kwaye zihlala ziyifayibha zeglasi ze-quartz ezifakwe izinto ezinqabileyo zomhlaba. Ii-ions eziqhelekileyo ezifakwe i-doped ziquka i-ytterbium (Yb³⁺), i-erbium (Er³⁺), i-thulium (Tm³⁺), njl., ezihambelana neebhendi ezahlukeneyo ze-output wavelength (ezifana ne-1064nm, 1550nm, 2μm, njl.njl.). Ubude befayibha ye-gain kufuneka buyilwe ngokuchanekileyo ukuqinisekisa ukufunxwa ngokupheleleyo kokukhanya kwepompo ngelixa kugcinwa ukuguqulwa kwe-opto-optical esebenza kakuhle.
3. Eyona ndlela ixhaphakileyo yokusebenzisa umngxuma ojikelezayo yi-fiber Bragg grating pair. I-grating yenziwa ngokutyhila imicu ye-optical kwi-ultraviolet laser interference fringes, nto leyo ebangela utshintsho oluhlala luhleli kwi-refractive index yeendawo zazo eziphambili. Ngokulawula ixesha kunye nobude be-grating, ubude bomda ophakathi kunye ne-bandwidth yokubonakaliswa kwayo kunokulawulwa ngokuchanekileyo. Olu lwakhiwo lwe-resonant cavity olune-fiber epheleleyo alufuni izinto ezahlukeneyo ezifana neelensi ze-optical, nto leyo ephucula kakhulu uzinzo kunye nokukwazi ukulwa nokuphazamiseka kwenkqubo.
4. Inkqubo yokukhupha i-beam collimation idla ngokuba ngasemva kwe-output end grating. Umsebenzi wayo kukuguqula i-divergent laser ekhutshwa kwi-optical fiber ibe yi-collimated parallel light okanye ukuyijolisa ngakumbi kumphezulu wokusebenza. Le nkqubo idla ngokuquka iilensi ezizijolisa ngokwazo okanye amaqela eelensi ezincinci kwaye yamkela isakhiwo esichanekileyo somatshini ukuqinisekisa ukuchaneka kokulungelelaniswa. Uyilo lwe-optical olusemgangathweni ophezulu lunokunciphisa ngempumelelo ukuphazamiseka kwaye luqinisekise ukuba i-output beam igcina usasazo oluhle kakhulu lweGaussian.
Ixesha leposi: Novemba-25-2025