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In this letter, we propose a method for measuring the pulsewidths at different spatial positions of ultrashort laser pulses. By measuring the pulsewidths varying with spatial positions of chirped and chirped-free femtosecond laser pulses, it is found that pulsewidths at edge positions are longer than that of central positions due to the effect of residual spatial chirp. Then, we measure the temporal...
In this paper we describe how to improve the workflow in forestry management using the increased capability of today's scanner-systems. We developed a new approach for single-tree delineation based on a volumetric analysis in laser-scanner data. The algorithm detects positions and dimensions of individual trees in a forest for use in a 3D-GIS. The measured data can be combined with other measured...
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