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Center Innovation Fund: GSFC CIF

A Range Resolved CO2 Backscattering Profile Measurement Technique for Ground Calibration

Completed Technology Project

Project Introduction

This innovative technique employs a 'return to zero pseudo noise' random modulation to extract several orders of magnitude more energy from a CW fiber laser than is possible via a conventional DIAL measurement thereby enabling commercial off-the-shelf technology to be used in place of expenses custom built laser systems.  The challenge being investigated by this particular effort is to maximize how rapidly measurements can be made and thereby extract as many photons as possible from the laser..

This project involves modulating a commercial, distributed feedback, laser with a pseudo random code. It involves the optimization of laser pulse width versus the pumping of the fiber laser to extract the maximum amount of energy before encountering damaging nonlinear effects in the fiber amplifier.  It also explores the impact of nonlinearities in the noise on measurement precision.

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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.

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