Journal Article

PUBDB-2025-00903

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spectral dynamics in broadband frequency combs with overlapping harmonics

Fan, W.CFEL*DESY* ; Ayhan, F. ; Wildi, T.CFEL*DESY* ; Volkov, M. ; Seer, A. ; Ludwig, M.Extern* ; Voumard, T.CFEL*Extern* ; Brodschelm, A. ; Brasch, V. ; Villanueva, G. L. ; Herr, T. (Corresponding author)CFEL*DESY*

2025
APS College Park, Md.

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Please use a persistent id in citations: doi:10.1103/kgd7-52hy  doi:10.3204/PUBDB-2025-00903

Abstract: Optical frequency combs and their spectra of evenly spaced discrete laser lines are essential to modern time and frequency metrology. Recent advances in integrated photonic waveguides enable efficient nonlinear broadening of an initially narrowband frequency comb to multi-octave bandwidth. Here, we study the nonlinear dynamics in the generation of such ultra-broadband spectra where different harmonics of the comb can overlap. We show that a set of interleaved combs with different offset frequencies extending across the entire spectrum can emerge, which transform into a single evenly spaced ultra-broadband frequency comb when the initial comb is offset-free.

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Contributing Institute(s):

1. FS-CFEL-2-UMP (FS-CFEL-2-UMP)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. iSenseDNA - Computation driven development of novel vivo-like-DNA-nanotransducers for biomolecules structure identification (101046920) (101046920)
3. STARCHIP - Microphotonics-based frequency combs for habitable exoplanet detection (853564) (853564)
4. VH-NG-1404 - Ultra-fast nonlinear microphotonics (2019_VH-NG-1404) (2019_VH-NG-1404)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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