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Updated: May 15, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Femtosecond SESAM-modelocked Cr:ZnS laser
Evgeni Sorokin1, Nikolai Tolstik, Kathleen I Schaffers
1Photonics Institute, TU Wien, Gusshausstrasse 27/387, A-1040 Vienna, Austria. sorokin@tuwien.ac.at
Abstract:
We report self-starting femtosecond operation of a 180-MHz SESAM-controlled prismless Cr:ZnS laser around 2400 nm at open air and room temperature. Dispersion compensation was achieved by a combination of bulk materials and chirped mirrors. Both soliton- and chirped-pulse operation regimes have been demonstrated with 130 fs (630 fs) pulse duration at 130 (205) mW average output power, respectively. The output power was about 30% higher than for a comparable Cr:ZnSe sample in the same cavity.
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