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Proceedings Paper

Fast, universal, and fully automatic pulse-picker unit for femtosecond laser systems
Author(s): Aleksander Głuszek; Grzegorz Soboń; Jarosław Sotor
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Paper Abstract

Effective, high energy ultrafast laser systems for practical applications requires laser sources with low and tunable repetition rate. Intrinsically, a mode-locked fiber laser operates at relatively high and fixed repetition rates (at the order of MHz). Such a high repetition rate limits the achievable pulse energy from an amplifier. To overcome this limitation, we demonstrate a fast, compact, and fully automatic custom made pulse picking system for operation with femtosecond lasers with repetition rates up to 50 MHz. It employs custom electronics with FPGA based signal processing unit and a fast 200 MHz acousto-optic modulator. Proposed solution is flexible and it can be used with various lasers, modulators and detectors. Therefore it is possible to operate e.g. at 1.55 Μm and 2 μm wavelengths. Moreover, the unit can automatically adopted to different repetition rates of seed lasers by adjustable time delay, to be in phase with optical signal. FPGA based signal processing unit can be reconfigured by a microcontroller to deliver several triggering options, digital delay line and frequency meter unit.

Paper Details

Date Published: 4 December 2018
PDF: 5 pages
Proc. SPIE 10974, Laser Technology 2018: Progress and Applications of Lasers, 1097407 (4 December 2018); doi: 10.1117/12.2518390
Show Author Affiliations
Aleksander Głuszek, Wroclaw Univ. of Science and Technology (Poland)
Grzegorz Soboń, Wroclaw Univ. of Science and Technology (Poland)
Jarosław Sotor, Wroclaw Univ. of Science and Technology (Poland)

Published in SPIE Proceedings Vol. 10974:
Laser Technology 2018: Progress and Applications of Lasers
Jan K. Jabczynski; Ryszard S. Romaniuk, Editor(s)

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