Pab Pawg Science Island ua kev sib tsoo hauv Siab Pulse Zog Mid-infrared Fiber Optic Transmission

Tsis ntev los no, pawg kws tshawb fawb Jiang Haihe ntawm Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv, Hefei Institute of Physical Sciences, Suav Academy ntawm Kev Tshawb Fawb, tau ua tiav qhov tseem ceeb hauv kev kawm ntawm lub zog siab zog pulsed laser transmission system nyob rau hauv nruab nrab-infrared wavelength band, thiab muaj. tsim ib 6- qhov microstructured anti-resonance hollow-core fiber (AR-HCF) nrog ib tug loj core txoj kab uas hla ntawm 78 μm, uas yog thawj zaug paub qhov zoo kis tau tus mob ntawm siab zog pulsed laser teeb ntawm 2.79 μm wavelength band. nyob rau hauv chav tsev kub. Cov txiaj ntsig tau raug luam tawm nyob rau hauv thoob ntiaj teb renowned Optical TTG. Cov txiaj ntsig tau raug luam tawm hauv Optics thiab Laser Technology, ib qho kev lees paub thoob ntiaj teb optical TOP journal.
Cov khoom siv kho mob laser feem ntau xav tau lub catheter hloov pauv kom xa lub teeb laser mus rau tus neeg mob, tab sis feem ntau ntawm cov khoom siv kho mob nruab nrab-infrared laser siv lub teeb qhia caj npab kom xa lub teeb laser. Txawm li cas los xij, txoj kev siv lub teeb-qhia caj npab ntawm laser kis tau tus mob muaj ntau yam teeb meem, xws li cov txheej txheem nyuaj, tsis muaj kev sib kis tau zoo, thiab tsis muaj kev hloov pauv. Kev siv cov fiber ntau kis tau tus mob tuaj yeem daws cov teeb meem saum toj no, tab sis cov khoom siv ntawm cov khoom siv kho qhov muag fiber ntau nyob rau hauv nruab nrab-infrared band ntawm lub laser kev puas tsuaj yog tsawg, thiab tsis tuaj yeem ua tau raws li 3μm band erbium laser kho mob cov cuab yeej nrog lub zog ceev. ntawm lub teeb qhia kev xav tau. Yog li, pab pawg tshawb fawb tau tsim thiab tshawb xyuas cov qauv yooj yim, kev sib txuas sib txuas ua haujlwm tau zoo, muaj kev puas tsuaj loj thiab hloov pauv hloov pauv ntawm AR-HCF lwm lub teeb qhia caj npab kom xa lub zog laser.
Pab neeg no tau siv cov qauv tsim 6-qhov microstructure AR-HCF nrog lub taub loj ntawm 78 μm thawj zaug kom xa cov lasers siab zog hauv 2.79 μm band ntawm chav tsev kub. Tsis muaj kev puas tsuaj rau cov fiber ntau, qhov nruab nrab sib txuas sib txuas ua haujlwm hauv cheeb tsam tag nrho yog 77.3%, thiab qhov sib txuas siab tshaj plaws ntawm kev sib kis tau nce mus txog 85% nyob rau hauv cov kab hluav taws xob siab thiab lub zog me me. Yog hais tias cov huab cua-absorbed attenuation nyob rau hauv cov tub ntxhais yog txiav tawm, cov txheej txheem fiber ntau nws tus kheej kis tau tus mob efficiency tshaj 90%. Lub kaw lus ua tiav qhov siab tshaj plaws ntawm lub zog hluav taws xob ntawm 11.78 mJ, nrog rau qhov sib npaug ntawm lub zog ntom ntom ntawm 350 J / cm2, uas deb tshaj tus nqi xav tau rau cov nqaij mos ablation hauv cov kab mob muaj sia. Nyob rau tib lub sij hawm, qhov tsawg kawg nkaus khoov lub vojvoog ntawm AR-HCF yog 20 cm thiab qhov sib thooj poob tuaj yeem ua tau raws li tus kws kho mob cov kev xav tau, thiab lub laser beam zoo ntawm cov zis kawg ntawm AR-HCF yog qhov zoo dua li qhov kawg ntawm cov tswv yim. , uas yog ib qho kev txhim kho zoo.
Piv nrog rau cov khoom siv kho qhov muag tam sim no ua los ntawm lwm cov qauv thiab cov khoom siv rau 2.79 μm wavelength kis tau tus mob, 6- qhov qauv ntawm silica AR-HCF muaj zog mechanical stability, kev puas tsuaj ntau dua, thiab qis dua rhiab heev thiab outperforms kis tau tus mob. cov pa taws qhia caj npab. Txoj kev tshawb no qhib txoj hauv kev tshiab rau kev sib kis tau zoo ntawm 2.79 μm Cr, Er: YSGG kho mob lub xeev lasers.

Daim duab 1. AR-HCF cross-section qauv

Daim duab 2. 2.79 μm AR-HCF spatial kis tau tus mob

Daim duab 3. Kev poob ntawm AR-HCF nrog sib txawv bending radii thiab khoov cov lus qhia