title: Mid-IR supercontinuum pumped by femtosecond pulses from thulium doped all-fiber amplifier.
abstract: We present a mid-infrared (mid-IR) supercontinuum (SC) light source pumped by femtosecond pulses from a thulium doped fiber amplifier (TDFA) at 2 μm. An octave-spanning spectrum from 1.1 to 3.7 μm with an average power of 253 mW has been obtained from a single mode ZBLAN fiber. Spectral flatness of 10 dB over a 1390 nm range has been obtained in the mid-IR region from 1940 - 3330 nm. It is resulted from the enhanced self phase modulation process in femtosecond regime. The all-fiber configuration makes such broadband coherent source a compact candidate for various applications.
authors.forename: Jiaqi
authors.initials: J
authors.lastname: Luo
authors.forename: Biao
authors.initials: B
authors.lastname: Sun
authors.forename: Jiayun
authors.initials: J
authors.lastname: Liu
authors.forename: Zhiyu
authors.initials: Z
authors.lastname: Yan
authors.forename: Nanxi
authors.initials: N
authors.lastname: Li
authors.forename: Eng Leong
authors.initials: EL
authors.lastname: Tan
authors.forename: Qijie
authors.initials: Q
authors.lastname: Wang
authors.forename: Xia
authors.initials: X
authors.lastname: Yu