Time-resolved fluorescence of vegetation--Excitation intensity analysis

  • G. Schmuck
  • , C. Koechler
  • , J. Verdebout
  • , I. Moya

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Time-resolved measurements of the laser-induced chlorophyll fluorescence emission of vegetation are described. The influence of the exciting laser pulse intensity on the overall fluorescence decay was studied for remote detection of plant stress. All the intensity measurements performed using picosecond laser excitation and a streak-camera detection system. For calibration a single-photon counting apparatus was used. The fluorescence decay of plants in steady-state conditions of photosynthesis is characterized by a medium lifetime of about 0.35-0.40 ns at a low-intensity excitation pulse. With an excitation pulse intensity above 1014 photons per cm2, the lifetime in the above-mentioned conditions decreases significantly. This shortcoming is interpreted in terms of exciton annihilation.

Original languageEnglish
Title of host publicationDigest - International Geoscience and Remote Sensing Symposium (IGARSS)
Editors Anon
PublisherPubl by IEEE
Pages2277-2280
Number of pages4
ISBN (Print)0879426756
Publication statusPublished - 1 Dec 1991
Event1991 International Geoscience and Remote Sensing Symposium - IGARSS'91 - Espoo, Finl
Duration: 3 Jun 19916 Jun 1991

Publication series

NameDigest - International Geoscience and Remote Sensing Symposium (IGARSS)
Volume4

Conference

Conference1991 International Geoscience and Remote Sensing Symposium - IGARSS'91
CityEspoo, Finl
Period3/06/916/06/91

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