Lidar Reference System Based on a High-Power-Laser; Diode pumped high brigthness solid state rod laser with ns-pulsses in the joule-range

Description: Das Projekt "Lidar Reference System Based on a High-Power-Laser; Diode pumped high brigthness solid state rod laser with ns-pulsses in the joule-range" wird vom Umweltbundesamt gefördert und von Universität Potsdam, Institut für Physik durchgeführt. An efficient diode pumped, pulsed high power laser System based on a rod geometry will be developed as a pump source for a lidar system. The lidar System will be a next generation lidar System to characterize the water vapour distribution in the atmosphere. The laser will be power-scalable and provide average Output powers in excess of 400 W at relatively low repetition rates ranging from 100-1000 Hz and pulse durations in the range of 10-100 ns. It should embody a diffraction limited beam quality (M2 smaller than 1.5). Small bandwidth and high frequency stability are achieved via injection seeding technique. The thermally induced birefringence in the laser rods is compensated utilizing polarization rotation and in addition imaging the laser rods onto each other. To maintain the beam quality while power scaling the laser System optical phase conjugate mirrors are considered to be used. Potential laser materials are Nd: YAG, Yb:YAG. They will be compared to other materials with longer fluorescence lifetimes of the upper laser level. An important accomplishment will be the frequency doubling of the laser light around l um wavelength to the green with an efficiency greater than 50 Percent. Diode pumped pulsed laser Systems with these specifications are not available yet but they are essential as a fundamental pump source for operational lidar Systems of the next generation.

Types:

SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Potsdam ? Fluoreszenz ? Messgerät ? Brüden ? Laser ? Lidar ? Wasserdampf ? Messtechnik ? Energie ? Luftanalyse ? Luftprobe ? Pumpe ? Atmosphäre ? Laseranwendung ? Haltbarkeit ?

Region: Brandenburg

Bounding box: 13.01582° .. 13.01582° x 52.45905° .. 52.45905°

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

• Deutsche Forschungsgemeinschaft (Bereitsteller*in)
• Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Physik der Atmosphäre, Abteilung Lidar (Mitwirkende)
• Leibniz-Institut für Troposphärenforschung e.V. (Mitwirkende)
• Umweltbundesamt (Bereitsteller*in)
• Universität Hohenheim, Institut für Physik und Meteorologie (Mitwirkende)
• Universität Potsdam, Institut für Physik (Betreiber*in)

Time ranges: 2004-03-01 - 2007-02-28

Alternatives

• Language: Englisch/English https://ufordat.uba.de/

Status

Aktiv

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