CO2 laser for spaceborne Doppler wind lidar

David V. Willetts; Michael R. Harris; Errico Armandillo; Callum J. Norrie; Paul M. Schwarzenberger; Steven Wallace; Wolfgang Schaeper; Matthias Gollor; Enrico Galletti; Emanuele S.E. Stucchi

doi:10.1117/12.195863

9 December 1994 CO₂ laser for spaceborne Doppler wind lidar

David V. Willetts, Michael R. Harris, Errico Armandillo, Callum J. Norrie, Paul M. Schwarzenberger, Steven Wallace, Wolfgang Schaeper, Matthias Gollor, Enrico Galletti, Emanuele S.E. Stucchi

Author Affiliations +

Proceedings Volume 2310, Lidar Techniques for Remote Sensing; (1994) https://doi.org/10.1117/12.195863
Event: Satellite Remote Sensing, 1994, Rome, Italy

Abstract

The transmitter laser is recognised to be one of the most critical technologies for space-based Doppler windlidar [1]. We present initial evaluation of the performance of an e-beam sustained device in the 1OJ, 10 Hz class. Lifetime issues are addressed in a subsidiary paper. We describe the design of the device and the results of a number of characterisation studies: 1) General nonoptical tests of gas circulation and heat exchanger efficiency. 2) Performance optimisation to maximise multimode efficiency as a function of energy loading, main discharge E/N and gas composition, all tests allowed for optimisation of cavity extraction. 3) Characterisation of the novel plasma anode electron gun with respect to beam uniformity, secondary electron concentration, and current constancy. 4) Optical characterisation to examine operating wavelength, pulse shape, beam profile in the near and far-field, output energy and electrical to optical conversion efficiency, and frequency behaviour during the pulse.

Citation Download Citation

David V. Willetts, Michael R. Harris, Errico Armandillo, Callum J. Norrie, Paul M. Schwarzenberger, Steven Wallace, Wolfgang Schaeper, Matthias Gollor, Enrico Galletti, and Emanuele S.E. Stucchi "CO₂ laser for spaceborne Doppler wind lidar", Proc. SPIE 2310, Lidar Techniques for Remote Sensing, (9 December 1994); https://doi.org/10.1117/12.195863

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