Projects per year
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 .
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- 2 Finished
Optical coherence tomography for controlled laser ablation at border layers of the skull base (OCT-LABS)
Huber, R., Klenzner, T., Wörn, H., Raczkowsky, J. & Schipper, J.
01.01.10 → 31.12.14
Project: DFG Projects › DFG Individual Projects
01.01.06 → 31.12.13
Project: DFG Projects › DFG Scholarships: Emmy Noether Programme