1579 NM Fiber Laser Source for Spaceborne Monitoring of Carbon Dioxide

Nicolas Cézard,Julien Le Gouët,Laurent Lombard,Guillaume Canat,Agnès Dolfi-Bouteyre,Alexandre Bresson,Didier Goular

doi:10.1051/epjconf/201611917010

Nicolas Cézard, Julien Le Gouët + Show 5 more

Open Access

https://doi.org/10.1051/epjconf/201611917010

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Abstract

We report on the development of a 1579 nm pulsed fiber laser source with high peak-power, intended to be used as a lidar source for CO 2 monitoring from space. We first discuss water-vapor sensitivity of spaceborne CO 2 measurements by lidar and point the interest of the 1579 nm wavelength with that respect. Then we detail the current development status of the pulsed fiber laser source.

Highlights

Integrated-Path Differential Absorption Lidar (IPDA) has been proposed for next-generation spaceborne CO2 monitoring systems [1]
An OPObased pulsed transmitter has been developed through A-SCOPE project [2], while fiber-based pulsed lasers are developed for ASCENDS[3,4]
For CO2 monitoring by a spaceborne IPDA Lidar, working around 1579 nm could offer a very low sensitivity to water-vapor profile errors, with an appropriate choice of ON-line and OFF-line wavelengths. It can be seen as an interesting alternative to the initially selected 1572 nm wavelength

Summary

INTRODUCTION

Integrated-Path Differential Absorption Lidar (IPDA) has been proposed for next-generation spaceborne CO2 monitoring systems [1]. A detailed multi-criteria wavelength selection was conducted in early studies that led to identify the 1572 nm CO2 absorption transition as a good candidate [1]. An OPObased pulsed transmitter has been developed through A-SCOPE project [2], while fiber-based pulsed lasers are developed for ASCENDS[3,4]. ONERA was contracted in 2011 by ESA to develop a high energy pulsed fiber laser emitting around 1579 nm, through HEPILAS project. We first recall how water-vapor sensitivity can be evaluated for a spaceborne CO2 IPDA system, and we confirm, with detailed conditions, that this sensitivity can be minimized by an appropriate choice of ON and OFF wavelengths around the 1579 nm transition. We report on the current status of the 1579 nm pulsed fiber laser source under development in HEPILAS project

WATER-VAPOR SENSITIVITY OF A CO2 IPDA LIDAR AT 1579 NM

IWFassumed

HIGH ENERGY PULSED FIBER LASER SOURCE AT 1579 NM

Findings

CONCLUSIONS