Kuchitira Chiwembu! Mphamvu yapamwamba kwambiri padziko lapansi 3 μm pakati-inrared femtosecond forser laser

Kuchitira Chiwembu! Mphamvu yapamwamba kwambiri padziko lapansi 3 μm pakati-inraredFemtosecond fiber

LaserKuti mukwaniritse zotulutsa zapakatikati za laser, gawo loyamba ndikusankha zinthu zoyenera matrix. Pafupi ndi a-infraed Atrix, quartz galasi matrix ndi chithunzi chofala kwambiri cha matrix omwe ali ndi vuto lotsika kwambiri, mphamvu yodalirika komanso yokhazikika. Komabe, chifukwa cha phonon mphamvu yayikulu (1150 cm-1), quartz sangakhale kugwiritsidwa ntchito kwa kufalikira kwapakatikati. Kuti tikwaniritse kufalikira kwapang'onopang'ono kwa laser pakati, tifunika kukonzanso zinthu zina za fiber ndi mphamvu za phonon, monga stfide galasi matrix kapena fluoride galasi matrix. Fiber fiber ili ndi mphamvu yotsika kwambiri ya phonon (pafupifupi 350 cm-1), koma ili ndi vuto lomwe ndendeyo sangathe kuwonjezeredwa, motero sioyenera kugwiritsa ntchito ngati chofiyira chopanda pake. Ngakhale gawo lagalasi la fluoride lili ndi mphamvu yapamwamba kwambiri ya phonon (550 cm-1) kuposa galasi la sulfade, limatha kupezekanso kwakanthawi kwa midlers ochepera 4 μm. Chofunika kwambiri, gawo lagalasi la fluoride limatha kukwaniritsa zambiri zapadziko lapansi, zomwe zitha kupereka phindu kwa m'badwo wa mibadwo yazikulu zam'madzi, mwachitsanzo, chiwonetsero chazithunzi chofiyira chambiri cha ER3 + chatha kukwaniritsa malo okwana 10. Chifukwa chake, fluoride galasi matrix ndi chinthu choyenera kwambiri cha matrix cha matrix cha ma laser.

Posachedwa, gulu la profesa Guan Shuangchen ndi Professor GUO Chikun pa yunivesite yapamwamba kwambiripurse fiberyopangidwa ndi GRAMID ER-yotsekedwa yotsekedwa: ZBlan Firn Oscillator, mode-er-zzal prompilifaifar ndi minda yayikulu-zblan fiber yayikulu.
Kutengera ndi malingaliro ophatikizika ndi mawonekedwe ophatikizika a Ultrad Asser olamulidwa ndi polarirization yolumikizidwa ndi njira yosinthira mapangidwe a mitundu yayikulu ya 8.82w ndi muyeso wa FS. Mbiri yapadziko lonse lapansi ya mphamvu yapamwamba kwambiri yomwe idakwaniritsidwa ndi kafukufukuyu adatsitsimutsidwa.

Chithunzi 1 Chojambula cha ER: ZBlan Firbet laser potengera mawonekedwe a Mopa
Kapangidwe kaFemtosecond laserDongosolo likuwonetsedwa mu Chithunzi 1. Makina ocheperako ophatikizira awiri: ZBlan fiber ya 3.1 m kutalika kwa fibelirif in the preamplifier ndi 15 μm (na = 0.12). Mu Emplifier yayikulu, gawo lambiri la HARD SIR: ZBlan fiber ndi kutalika kwa 4 μm.% Ndi m'mimba mwake ya 30 μm (Na = 0.12). Ma diberi ozizira kwambiri amapangitsa kuti chiberekero chambiri chimakhala chotsika kwambiri ndipo chimatha kupirira mphamvu zapamwamba komanso zotulutsa zapamwamba zamphamvu zazikulu. Malekezero onse a chitsamba amagwiritsidwa ntchito ku chipewa cha Alf3.