TY - JOUR

T1 - Spectral comb of highly chirped pulses generated via cascaded FWM of two frequency-shifted dissipative solitons

AU - Podivilov, Evgeniy V.

AU - Kharenko, Denis S.

AU - Bednyakova, Anastasia E.

AU - Fedoruk, Mikhail P.

AU - Babin, Sergey A.

N1 - Publisher Copyright: © The Author(s) 2017.

PY - 2017/6/6

Y1 - 2017/6/6

N2 - Dissipative solitons generated in normal-dispersion mode-locked lasers are stable localized coherent structures with a mostly linear frequency modulation (chirp). The soliton energy in fiber lasers is limited by the Raman effect, but implementation of the intracavity feedback at the Stokes-shifted wavelength enables synchronous generation of a coherent Raman dissipative soliton. Here we demonstrate a new approach for generating chirped pulses at new wavelengths by mixing in a highly-nonlinear fiber of these two frequency-shifted dissipative solitons, as well as cascaded generation of their clones forming in the spectral domain a comb of highly chirped pulses. We observed up to eight equidistant components in the interval of more than 300 nm, which demonstrate compressibility from ∼10 ps to ∼300 fs. This approach, being different from traditional frequency combs, can inspire new developments in fundamental science and applications such as few-cycle/arbitrary-waveform pulse synthesis, comb spectroscopy, coherent communications and bio-imaging.

AB - Dissipative solitons generated in normal-dispersion mode-locked lasers are stable localized coherent structures with a mostly linear frequency modulation (chirp). The soliton energy in fiber lasers is limited by the Raman effect, but implementation of the intracavity feedback at the Stokes-shifted wavelength enables synchronous generation of a coherent Raman dissipative soliton. Here we demonstrate a new approach for generating chirped pulses at new wavelengths by mixing in a highly-nonlinear fiber of these two frequency-shifted dissipative solitons, as well as cascaded generation of their clones forming in the spectral domain a comb of highly chirped pulses. We observed up to eight equidistant components in the interval of more than 300 nm, which demonstrate compressibility from ∼10 ps to ∼300 fs. This approach, being different from traditional frequency combs, can inspire new developments in fundamental science and applications such as few-cycle/arbitrary-waveform pulse synthesis, comb spectroscopy, coherent communications and bio-imaging.

KW - FEEDBACK

KW - MICRORESONATOR

KW - MODE-LOCKED LASERS

KW - NONLINEAR OPTICS

KW - PHOTONIC CRYSTAL FIBER

KW - POWER

KW - RAMAN

KW - SUPERCONTINUUM GENERATION

UR - http://www.scopus.com/inward/record.url?scp=85020676859&partnerID=8YFLogxK

U2 - 10.1038/s41598-017-03092-2

DO - 10.1038/s41598-017-03092-2

M3 - Article

C2 - 28588302

AN - SCOPUS:85020676859

VL - 7

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 2905

ER -