Horumar! Awoodda ugu sareysa aduunka 3 μm dhexda infrared-femtosecond fiber laser

Horumar! Awoodda adduunka ugu sareysa 3 μm dhexda infraredlaser fiber femtosecond

Fiber lasersi loo gaaro wax soo saarka laser-infrared dhexda, talaabada ugu horeysa waa in la doorto walxaha matrix fiber ee ku habboon. In laser fiber-infrared u dhow, matrix muraayadda quartz waa maadada matrix fiber-ka ee ugu caansan oo leh luminta gudbinta oo aad u hooseeya, xoog farsamo oo lagu kalsoonaan karo iyo xasillooni heer sare ah. Si kastaba ha ahaatee, sababtoo ah tamarta sare ee phonon (1150 cm-1), fiber quartz looma isticmaali karo gudbinta laser-ka dhexe. Si loo gaaro gudbinta luminta hoose ee laser-infrared dhexda, waxaan u baahanahay inaan dib u doorano qalabka kale ee fiber matrix tamarta hoose, sida matrix galaas sulfide ama matrix galaas fluoride. Fiber Sulfide waxa uu leeyahay tamarta phonon ugu hooseeya (qiyaastii 350 cm-1), laakiin waxa ay haysataa dhibaatada in fiirsashada doping-ka aan la kordhin karin, sidaas darteed kuma habboona in loo isticmaalo faa'iido faa'iido leh si loo dhaliyo laser-infrared dhexdhexaad ah. Inkasta oo substrate galaas fluoride uu leeyahay tamar phonon waxyar ka sareysa (550 cm-1) marka loo eego substrate galaaska sulfide, waxay sidoo kale gaari kartaa gudbinta khasaaro hoose ee leysarka dhexe ee infrared oo leh mowjado ka yar 4 μm. Tan ka sii muhiimsan, substrate-ka galaaska fluoride wuxuu gaari karaa feejignaan sare oo naadirka ah ee doping earth ion, kaas oo bixin kara faa'iidada looga baahan yahay jiilka laser-ka dhexe, tusaale ahaan, fiber fluoride ZBLAN ee ugu bislaaday ee Er3+ wuxuu awooday inuu gaaro xoojinta doping ilaa 10 mol. Sidaa darteed, matrix galaas fluoride waa maadada matrix fiber-ka ee ugu habboon ee laser-fiber-infrared dhexda.

Dhawaan, kooxda Professor Ruan Shuangchen iyo Professor Guo Chunyu ee Jaamacadda Shenzhen waxay sameeyeen femtosecond awood sare leh.laser fiber garaaca wadnahaoo ka kooban 2.8μm qaab quful ah Er:ZBLAN fiber oscillator, hal qaab Er:ZBLAN fiber preamplifier iyo garoon qaab-weyn ah Er:ZBLAN fiber amplifier weyn.
Iyada oo ku saleysan aragtida is-xakamaynta iyo xoojinta garaaca wadnaha dhexe ee infrared-gaaban ee ay maamusho gobolka polarization iyo jilitaanka tirada ee kooxdeena cilmi-baarista, oo ay weheliso xakamaynta aan tooska ahayn iyo hababka xakamaynta habka fiyuuska indhaha ee waaweyn, farsamada qaboojinta firfircoon iyo xoojinta qaab dhismeedka bamka laba-dhammaadka ah, nidaamku wuxuu helayaa 2.8μm garaaca garaaca wadnaha ultra-gaaban oo leh celcelis ahaan 8.12W iyo ballaca garaaca garaaca 148 fs. Rikoorka caalamiga ah ee celceliska awoodda ugu sarraysa ee ay gaadheen kooxdan cilmi-baadhista ayaa la sii cusbooneysiiyay.

Jaantuska 1 Jaantuska qaab dhismeedka Er:ZBLAN fiber laser oo ku salaysan qaabdhismeedka MOPA
Qaab dhismeedkaleysarka femtosecondnidaamka waxa lagu muujiyey Jaantuska 1 0.12). Cod-weyneeye guud, goob qaab-weyn oo laba-laaban leh Er:ZBLAN fiber oo dhererkeedu yahay 4m ayaa loo isticmaalay sidii faa'iidada faa'iidada leh ee xoogga doping ee 6 mol.% iyo dhexroorka xudunta u ah 30 μm (NA = 0.12). Dhexroorka udub dhexaadka ah ee weyni wuxuu ka dhigayaa faa'iidada fiberku inuu leeyahay iskudhaf aan toos ahayn oo hooseeya wuxuuna u adkeysan karaa awoodda ugu sarreysa iyo wax soo saarka garaaca wadnaha ee tamarta garaaca weyn. Labada daraf ee fiber-ka faa'iidada waxay ku dhex milmeen koofiyadda AlF3.