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Optical parametric oscillators and amplifiers for airborne and spaceborne active remote sensing of CO2 and CH4

Fix, Andreas and Büdenbender, Christian and Wirth, Martin and Quatrevalet, Mathieu and Amediek, Axel and Kiemle, Christoph and Ehret, Gerhard (2011) Optical parametric oscillators and amplifiers for airborne and spaceborne active remote sensing of CO2 and CH4. In: Proc. SPIE 8182, 818206 (2011); doi:10.1117/12.898412, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VII (8182), p. 818206. SPIE Remote Sensing 2012, 19.-22.09.2011, Prague, Czech Republic. ISBN 9780819488091.

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Official URL: http://dx.doi.org/10.1117/12.898412

Abstract

Carbon dioxide (CO2) and methane (CH4) are the most important of the greenhouse gases that are directly influenced by human activities. The Integrated Path Differential Absorption (IPDA) lidar technique using hard target reflection in the near IR (1.57μm and 1.64μm) to measure the column-averaged dry air mixing ratio of CO2 and CH4 with high precision and low bias has the potential to deliver measurements from space and air that are needed to understand the sources and sinks of these greenhouse gases. CO2 and CH4 IPDA require tunable laser sources at 1.57 μm and 1.64 μm that coincide with appropriate absorption lines of these species having high pulse energy and average power as well as excellent spectral and spatial properties. Within this study we have realized more than 50mJ of pulse energy in the near IR coincident with appropriate absorption lines using an injection-seeded optical parametric oscillator-amplifier system pumped at 100 Hz. At the same time this device showed excellent spectral and spatial properties. Bandwidths of less than 100 MHz with a high degree of spectral purity (> 99.9 %) have been achieved. The frequency stability was likewise excellent. The M2-factor was better than 2.3. Owing to these outstanding properties optical parametric devices are currently under investigation for the CH4 lidar instrument on the projected French-German climate satellite MERLIN. A similar device is under development at DLR for the lidar demonstrator CHARM-F which will enable the simultaneous measurement of CO2 and CH4 from an airborne platform.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Optical parametric oscillators and amplifiers for airborne and spaceborne active remote sensing of CO2 and CH4
Authors:
AuthorsInstitution or Email of Authors
Fix, Andreasandreas.fix@dlr.de
Büdenbender, Christianchristian.büdenbender@dlr.de
Wirth, Martinmartin.wirth@dlr.de
Quatrevalet, Mathieumathieu.quatravalet@dlr.de
Amediek, Axelaxel.amediek@dlr.de
Kiemle, Christophchristoph.Kiemle@dlr.de
Ehret, Gerhardgerhard.ehret@dlr.de
Date:30 September 2011
Journal or Publication Title:Proc. SPIE 8182, 818206 (2011); doi:10.1117/12.898412
Volume:Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VII
Page Range:p. 818206
Series Name:Proceedings of SPIE
ISBN:9780819488091
Status:Published
Keywords:Spaceborne lidar, airborne lidar, greenhouse gases, carbon dioxide, methane, optical parametric oscillators, optical parametric amplifiers
Event Title:SPIE Remote Sensing 2012
Event Location:Prague, Czech Republic
Event Type:international Conference
Event Dates:19.-22.09.2011
Organizer:SPIE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben LIDAR-Forschung und -Entwicklung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Dr.rer.nat. Andreas Fix
Deposited On:29 Nov 2011 10:07
Last Modified:29 Nov 2011 10:17

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