Ib lub laser fiber ntau hais txog lub laser siv lub ntiaj teb tsawg-doped iav fiber li qhov nce qhov nruab nrab. Lub laser fiber ntau tau tsim los ntawm lub tshuab fiber ntau: nyob rau hauv qhov kev txiav txim ntawm lub teeb pom kev zoo, lub hwj chim ceev yog yooj yim tsim nyob rau hauv lub fiber, resulting nyob rau hauv ib lub laser ntawm kev ua hauj lwm yeeb tshuaj. Lub zog theem "particle number inversion" tuaj yeem tsim cov laser oscillation tso tawm thaum lub tswv yim zoo (ua kom muaj kab noj muaj zog) uas tsim nyog ntxiv.
Cov txiaj ntsim ntawm cov lim khov ntshiab huv laser vuam tshuab:
1. Kev tshawb fawb los ntawm kev tshawb fawb tau nce lub thermal load ntawm lub fiber tsis muaj thermal attenuation los yog photoabsorption cov teebmeem thiab stimulated Raman scattering (SRS), uas tau muab yav tas los raws li kev limiting feem rau cov lasers fiber ntau. Nws yog tam sim no tsuas yog rau siab nruab nrab lub zog lasers.
2. Raws li lub twj tso kua mis, cov pa roj carbon monoxide poov xab muaj peev xim zoo dua qub dua li semiconductor diode tuav thiab semiconductor diode sib tsoo. Cov pa roj carbon dioxide feem ntau muaj ntau tshaj 100,000 xuab moos thiab tsis tas yuav hloov mus ntxiv thaum lub neej ntawm tag nrho cov ua haujlwm laser. Kev siv cov laus kev ntsuam xyuas ntau ntxiv nce kev cia siab.
3. Ua kom lub dag lub tshuab pa zog ntxiv thiab ua kom cov twj pom kev ua haujlwm nce siab dua qhov nruab nrab lub zog.
4. Vim nws muaj qhov xwm txheej, lub fibre feem ntau nws tus kheej txias, yog li ua kom txo cov thermal lensing nyhuv thiab simplifying cov qauv siv laser. Cov kab mob thooj siab no yog txhais tau hais tias lawv cov kev ua kom txias tsis raws li xav tau lwm yam khoom siv laser uas pumped los ntawm semiconductor diode tuav thiab semiconductor diode sib tsoo.
5, ntau hom fiber ntau diam iav thiab cov tshuab fais fab-thiab-ua si yuav siv tau rau ntau hom kev sib zog ua kom muaj zog; tsawg hom ib hom Gaussian fiber rau kev txiav, drilling, loj lub thawv rau multimode fiber ntau rau kev kho los yog kev kho deg. Ib nruam yoj ib hom fiber ntau laser nrog ib tug fiber, piv txwv li 50 micron diameter, tau yooj yim hloov ntawm lub ntsuas laser mus rau ib lub vuam laser. Txhua yam uas yuav tsum tau yog los hloov cov optics ntawm lub davhlau ya nyob twg xwb.
6. Fiber optic adapters uas tau xa tawm txog li 25 kW ntawm lub hwj chim tau. Muaj qee cov hluav taws xob laser hluav taws xob nqaj hlau tau tsim rau cov khoom siv fiber ntau-txuas nrog rau mus txog rau kev nrog hloov sij hawm tsawg tshaj 10 milliseconds. Kev pleev xim liab pom tuaj yeem muab tau rau txhua qhov channel.
