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Atmospheric propagation of high power laser radiation at different weather conditions

Pargmann, Carsten and Hall, Thomas and Duschek, Frank and Handke, Jürgen (2016) Atmospheric propagation of high power laser radiation at different weather conditions. In: Proceedings of SPIE - The International Society for Optical Engineering. SPIE Defense + Commercial Sensing, 17.-21. April 2016, Baltimore, USA.

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Abstract

Applications based on the propagation of high power laser radiation through the atmosphere are limited in range and effect, due to weather dependent beam wandering, beam deterioration, and scattering processes. Security and defense related application examples are countermeasures against hostile projectiles and the powering of satellites and aircrafts. For an examination of the correlations between weather condition and laser beam characteristics DLR operates at Lampoldshausen a 130 m long free transmission laser test range. Sensors around this test range continuously monitor turbulence strength, visibility, precipitation, temperature, and wind speed. High power laser radiation is obtained by a TruDisk 6001 disk laser (Trumpf company) yielding a maximum output power of 6 kW at a wavelength of 1030 nm. The laser beam is expanded to 180 mm and focused along the beam path. Power and intensity distribution are measured before and after propagation, providing information about the atmospheric transmission and alterations of diameter and position of the laser beam. Backscattered laser light is acquired by a photo receiver. As a result, measurements performed at different weather conditions show a couple of correlations to the characteristics of the laser beam. The experimental results are compared to a numerical analysis. The calculations are based on the Maxwell wave equation in Fresnel approximation. The turbulence is considered by the introduction of phase screens and the “von Karman” spectrum.

Item URL in elib:https://elib.dlr.de/104676/
Document Type:Conference or Workshop Item (Speech)
Title:Atmospheric propagation of high power laser radiation at different weather conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pargmann, CarstenCarsten.Pargmann (at) dlr.dehttps://orcid.org/0000-0003-3688-6360
Hall, ThomasThomas.Hall (at) dlr.deUNSPECIFIED
Duschek, FrankFrank.Duschek (at) dlr.deUNSPECIFIED
Handke, JürgenJuergen.Handke (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:Proceedings of SPIE - The International Society for Optical Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:Hochleistungslaser, atmosphärische Propagation, Scheibenlaser, Strahlcharakterisierung
Event Title:SPIE Defense + Commercial Sensing
Event Location:Baltimore, USA
Event Type:international Conference
Event Dates:17.-21. April 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Lampoldshausen
Institutes and Institutions:Institute of Technical Physics > Atmospheric Propagation and Effect
Deposited By: Pargmann, Dr. Carsten
Deposited On:21 Jun 2016 13:36
Last Modified:31 Jul 2019 20:01

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