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

Horumar! Awoodda ugu sareysa adduunka 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 fiirsi sare oo naadirka ah ee doping 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 shaqada jilitaanka tirada ee kooxdayada cilmi-baarista, oo ay weheliso xakamaynta aan tooska ahayn iyo hababka xakamaynta qaabka fiyuuska indhaha ee waaweyn, tiknoolajiyada qaboojinta firfircoon iyo qaab-dhismeedka xoojinta ee bamka laba-dhammaadka ah, nidaamku wuxuu helaa 2.8μm koronto celcelis ahaan leh koronto gaaban. 8.12W iyo ballaca garaaca garaaca 148fs. 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 muujiyay Jaantuska 1. Hal qaab oo labajibbaaran Er: Fiber ZBLAN oo dhererkeedu yahay 3.1 m ayaa loo isticmaalay sida faa'iidada faa'iidada ee preamplifier-ga oo leh qiyaasta doping ee 7 mol.% iyo dhexroorka xudunta u ah 15 μm (NA = 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.