Lub zog hloov pauv: lub zog siab tshaj 18kW
Tom qab kev sim ua pov thawj tseeb, lawv tau ua tiav hauv tsev tsim 15.5 W / 520 nm zaus-ob npaug ytterbium-dopedfiber ntau laser, uas tsim cov pulses ntawm txog 520 ps ntawm qhov rov ua dua ntawm 1.6 MHz nrog lub zog siab tshaj plaws txog li 18 kW, rau kev sim hloov hluav taws xob.
Txhawm rau kom phim cov fiber ntau, lawv tsom lub laser mus rau lub hom phiaj txoj kab uas hla ntawm 15 μm, uas ua rau kev sib txuas ua haujlwm tau txog li 86%. Hauv peb qhov kev sim, peb tau sim HCFs nrog qhov ntev ntawm 2,100 m thiab 300 m. Qhov nruab nrab qhov hluav taws xob tso zis yog 13.2 W, 6.7 W, thiab 3 W, raws li, thaum lub zog sib xws yog 15.9 kW, 8 kW, thiab 3.6 kW, raws li.
Tam sim no, nrog rau qhov tshwm sim ntawm qhov poob qis thiab pom-lub teeb taw qhia hollow-core fibers, cov kws tshawb fawb muaj laj thawj ntseeg tias lawv yuav txhim kho kev sib kis tau zoo thiab xav tias yuav ua tiav kev xa hluav taws xob sib kis.
Nws yog ib nqi sau cia hais tias txawm lub siab zog ceev ntawm 5.5J/cm2nyob rau hauv cov tub ntxhais fiber ntau, peb tsis tau soj ntsuam cov cim qhia ntawm fiber ntau puas thaum lub sij hawm sim. Tsis tas li ntawd, lub beam zoo tau khaws cia nyob rau theem siab hauv txhua qhov kev sim ntev (M2 < 1.1), uas yog qhov tseem ceeb rau precision micromachining nrog rau kev siv mus ntev.
Kev kov yeej cov kev txwv nonlinear ntawm cov khoom silica fibers
Pab neeg no tau ua tiav tseem ceeb hauv kev kov yeej cov kev txwv tsis muaj kab hauv cov khoom silica fibers. Cov kev txwv tsis pub tshaj tawm ntawm cov khoom siv silica fibers hauv qhov pom tau dhau los ua ib qho kev sib tw tshwj xeeb vim qhov txo qis hauv cov tub ntxhais, uas yog qhov tsim nyog kom ua tiav ib hom kev ua haujlwm, thiab uas feem ntau ua rau muaj kev nthuav dav ntawm cov spectrum.
Txhawm rau txheeb xyuas qhov tsis zoo ntawm lawv HCF, cov kws tshawb fawb tau muab piv rau 15-meter-ntev seem ntawm photonic siv lead ua fiber (PCF) nrog 10-micron core.
Nrog rau kev ntsuas tib yam, lawv pom tias qhov poob ntawm HCF yog piv rau PCF, tab sis qhov 300-meter-ntev HCF tau nthuav tawm tsawg dua spectral dav dua li PCF, qhia meej txog qhov ua tau zoo ntawm hollow- core fibers nyob rau hauv cov nqe lus ntawm nonlinearity.
