Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers

Christoph M. Eigenwillig, Wolfgang Wieser, Sebastian Todor, Benjamin R. Biedermann, Thomas Klein, Christian Jirauschek, Robert Huber*

*Corresponding author for this work
38 Citations (Scopus)


Ultrafast lasers have a crucial function in many fields of science; however, up to now, high-energy pulses directly from compact, efficient and low-power semiconductor lasers are not available. Therefore, we introduce a new approach based on temporal compression of the continuous-wave, wavelength-swept output of Fourier domain mode-locked lasers, where a narrowband optical filter is tuned synchronously to the round-trip time of light in a kilometre-long laser cavity. So far, these rapidly swept lasers enabled orders-of-magnitude speed increase in optical coherence tomography. Here we report on the generation of ∼60-70 ps pulses at 390 kHz repetition rate. As energy is stored optically in the long-fibre delay line and not as population inversion in the laser-gain medium, high-energy pulses can now be generated directly from a low-power, compact semiconductor-based oscillator. Our theory predicts subpicosecond pulses with this new technique in the future .

Original languageEnglish
Article number1848
JournalNature Communications
Publication statusPublished - 10.06.2013


Dive into the research topics of 'Picosecond pulses from wavelength-swept continuous-wave Fourier domain mode-locked lasers'. Together they form a unique fingerprint.

Cite this