简介:Wereportgenerationofsub-100fspulsestunablefrom1700to2100nmviaRamansolitonself-frequencyshift.Thenonlinearshiftoccursinahighlynonlinearfiber,whichispumpedbyanEr-dopedfiberlaser.Thewholesystemisfullyfiberized,withouttheuseofanyfree-spaceoptics.Thankstoitsexceptionalsimplicity,thesetupcanbeconsideredasanalternativetomode-lockedTm-andHo-dopedfiberlasers.