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Updated: Jun 20, 2026

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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Tapered lasers emitting at 650 nm with 1 W output power with nearly diffraction-limited beam quality
Pawel Adamiec1, Bernd Sumpf, Ingo Rüdiger
1Ferdinand-Braun-Institute für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, D-12489 Berlin, Germany. pawel.adamiec@fbh-berlin.de
Optics Letters
|August 18, 2009
Abstract:
High-brightness tapered lasers emitting around 650 nm were developed. Devices 2 mm long with a200-microm-long straight section, 1800-microm-long tapered section, and 4 degrees taper angle reached 1 W output power in CW operation with a nearly diffraction-limited beam quality.

