Kubudirira! Simba guru pasi rose re3 μm mid-infraredfemtosecond fiber laser
Laser yefaibhaKuti uwane simba rekushandisa laser yepakati peinfrared, danho rekutanga nderekusarudza fiber matrix yakakodzera. Muma fiber laser epedyo neinfrared, quartz glass matrix ndiyo inonyanya kushandiswa fiber matrix ine kurasikirwa kwakaderera kwekutumira, simba remagetsi rakavimbika uye kugadzikana kwakanaka. Zvisinei, nekuda kwesimba repamusoro re phonon (1150 cm-1), quartz fiber haigone kushandiswa pakutumira laser yepakati peinfrared. Kuti tiwane kurasikirwa kwakaderera kwe mid-infrared laser, tinofanira kusarudzazve zvimwe zvinhu zve fiber matrix zvine simba rakaderera re phonon, zvakaita se sulfide glass matrix kana fluoride glass matrix. Sulfide fiber ine simba re phonon rakaderera (inenge 350 cm-1), asi ine dambudziko rekuti doping concentration haigone kuwedzerwa, saka haina kukodzera kushandiswa se gain fiber kugadzira mid-infrared laser. Kunyangwe substrate yegirazi refluoride ine simba rephonon rakakwira zvishoma (550 cm-1) kupfuura substrate yegirazi resulfide, inogonawo kuwana kutapurirana kwakaderera kwema laser epakati peinfrared ane ma wavelengths ari pasi pe4 μm. Chinonyanya kukosha ndechekuti, substrate yegirazi refluoride inogona kuwana huwandu hwakawanda hwemaion doping, izvo zvinogona kupa gain inodiwa pakugadzirwa kwe laser yepakati peinfrared, semuenzaniso, fiber yakakura yefluoride ZBLAN yeEr3+ yakakwanisa kuwana huwandu hwedoping hunosvika 10 mol. Saka, fluoride glass matrix ndiyo fiber matrix yakakodzera material ye mid-infrared fiber lasers.
Munguva pfupi yapfuura, chikwata chaPurofesa Ruan Shuangchen naPurofesa Guo Chunyu paYunivhesiti yeShenzhen vakagadzira femtosecond ine simba gurulaser yekurova kwemoyoinoumbwa ne 2.8μm mode-locked Er:ZBLAN fiber oscillator, single-mode Er:ZBLAN fiber preamplifier uye large-mode field Er:ZBLAN fiber main amplifier.
Zvichibva padzidziso yekuzvimanikidza uye yekuwedzera simba repakati peinfrared ultra-short pulse inodzorwa nemamiriro epolarization uye nhamba yekufananidza yeboka redu rekutsvagisa, pamwe chete nenzira dzisina kudzvanywa uye dzekutonga mode dze large-mode optical fiber, tekinoroji yekutonhodza inoshanda uye chimiro che amplification chepombi ine mativi maviri, sisitimu iyi inowana 2.8μm ultra-short pulse output ine avhareji yesimba re8.12W uye upamhi hwe pulse hwe148 fs. Rekodhi yepasi rose yeavhareji yepamusoro simba rakawanikwa neboka iri rekutsvagisa rakazorodzwa zvakare.
Mufananidzo 1 Dhayagiramu yechimiro cheEr:ZBLAN fiber laser yakavakirwa pachimiro cheMOPA
Maumbirwo elaser ye femtosecondSisitimu inoratidzwa muMufananidzo 1. Fiber yeEr:ZBLAN ine double-clad imwe chete ine urefu hwe3.1 m yakashandiswa segain fiber mu preamplifier ine doping concentration ye7 mol.% uye core diameter ye15 μm (NA = 0.12). Mumain amplifier, double clad large mode field Er:ZBLAN fiber ine urefu hwe4 m yakashandiswa segain fiber ine doping concentration ye6 mol.% uye core diameter ye30 μm (NA = 0.12). core diameter yakakura inoita kuti gain fiber ive ne nonlinear coefficient yakaderera uye inogona kumira peak power yakakwira uye pulse output ye large pulse energy. Mhedzisiro yese ye gain fiber yakabatana neAlF3 terminal cap.
Nguva yekutumira: Kukadzi-19-2024