Portable all-fiber dual-output widely tunable light source for coherent Raman imaging

Maximilian Brinkmann, Alexander Fast, Tim Hellwig, Isaac Pence, Conor L. Evans, Carsten Fallnich

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


We present a rapidly tunable dual-output all-fiber light source for coherent Raman imaging, based on a dispersively matched mode-locked laser pumping a parametric oscillator. Output pump and Stokes pulses with a maximal power of 170 and 400 mW, respectively, and equal durations of 7 ps could be generated. The tuning mechanism required no mechanical delay line, enabling all-electronic arbitrary wavelength switching across more than 2700 cm−1 in less than 5 ms. The compact setup showed a reliable operation despite mechanical shocks of more than 25 m/s2 and is, thus, well suited for operation in a mobile cart. Imaging mouse and human skin tissue with both the portable light source and a commercial laboratory-bound reference system yielded qualitatively equal results and verified the portable light source being well suited for coherent Raman microscopy.

Original languageEnglish (US)
Pages (from-to)4437-4449
Number of pages13
JournalBiomedical Optics Express
Issue number9
StatePublished - Sep 1 2019
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics


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