A LIDAR-compatible, multichannel raman spectrometer for remote sensing of water temperature

Andréa de Lima Ribeiro, Christopher Artlett, Helen Pask

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The design and operation of a custom-built LIDAR-compatible, four-channel Raman spectrometer integrated to a 532 nm pulsed laser is presented. The multichannel design allowed for simultaneous collection of Raman photons at two spectral regions identified as highly sensitive to changes in water temperature. For each of these spectral bands, the signals having polarization parallel to (‖) and perpendicular to (⊥), the excitation polarization were collected. Four independent temperature markers were calculated from the Raman signals: two-colour(‖), two-colour(⊥), depolarization(A) and depolarization(B). A total of sixteen datasets were analysed for one ultrapure (Milli-Q) and three samples of natural water. Temperature accuracies of ±0.4 C–±0.8 C were achieved using the two-colour(||) marker. When multiple linear regression models were constructed (linear combination) utilizing all simultaneously acquired temperature markers, improved accuracies of ±0.3 C–±0.7 C were achieved.

LanguageEnglish
Article number2933
Pages1-12
Number of pages12
JournalSensors (Switzerland)
Volume19
Issue number13
DOIs
Publication statusPublished - 3 Jul 2019

Fingerprint

water temperature
markers
Spectrometers
remote sensing
Remote sensing
spectrometers
color
depolarization
Temperature
Water
Color
Depolarization
Linear Models
polarization
spectral bands
Polarization
temperature
regression analysis
pulsed lasers
Pulsed lasers

Bibliographical note

Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • LIDAR
  • Natural waters
  • Raman spectroscopy
  • Remote sensing
  • Temperature
  • Water

Cite this

de Lima Ribeiro, Andréa ; Artlett, Christopher ; Pask, Helen. / A LIDAR-compatible, multichannel raman spectrometer for remote sensing of water temperature. In: Sensors (Switzerland). 2019 ; Vol. 19, No. 13. pp. 1-12.
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abstract = "The design and operation of a custom-built LIDAR-compatible, four-channel Raman spectrometer integrated to a 532 nm pulsed laser is presented. The multichannel design allowed for simultaneous collection of Raman photons at two spectral regions identified as highly sensitive to changes in water temperature. For each of these spectral bands, the signals having polarization parallel to (‖) and perpendicular to (⊥), the excitation polarization were collected. Four independent temperature markers were calculated from the Raman signals: two-colour(‖), two-colour(⊥), depolarization(A) and depolarization(B). A total of sixteen datasets were analysed for one ultrapure (Milli-Q) and three samples of natural water. Temperature accuracies of ±0.4◦ C–±0.8◦ C were achieved using the two-colour(||) marker. When multiple linear regression models were constructed (linear combination) utilizing all simultaneously acquired temperature markers, improved accuracies of ±0.3◦ C–±0.7◦ C were achieved.",
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A LIDAR-compatible, multichannel raman spectrometer for remote sensing of water temperature. / de Lima Ribeiro, Andréa; Artlett, Christopher; Pask, Helen.

In: Sensors (Switzerland), Vol. 19, No. 13, 2933, 03.07.2019, p. 1-12.

Research output: Contribution to journalArticleResearchpeer-review

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