LITES: rotational Raman spectra of air molecules measured by high-resolution-spectroscopy lidar

We present the first, to the best of our knowledge, measurements from a new lidar facility that was designed and built at the University of Hertforshire since 2012. LITES (Lidar Innovations for Technologies and Environmental Sciences) allows testing, developing, and measuring of a multitude of clima...

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Bibliographic Details
Published in:Optics letters 2021-10, Vol.46 (20), p.5173-5176
Main Authors: Tatarov, Boyan, Müller, Detlef
Format: Article
Language:English
Subjects:
Environmental testing
High resolution
Lidar
Raman spectra
Rotational spectra
Spectral resolution
Spectrometry
Spectrum analysis
Temperature profiles
Trace gases
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Summary:We present the first, to the best of our knowledge, measurements from a new lidar facility that was designed and built at the University of Hertforshire since 2012. LITES (Lidar Innovations for Technologies and Environmental Sciences) allows testing, developing, and measuring of a multitude of climate-change relevant parameters of atmospheric particulate pollution and photochemically reactive trace gases. The core of LITES consists of a lidar spectroscopy instrument. In this first contribution, for example, we present the design and specifications of this instrument, its performance, and potential applications. First, we show examples of the measurements of range-resolved pure rotational Raman spectra and rotational-vibrational Raman spectra of air molecules with a spectral resolution better than 5 c m − 1 . We also present day-time temperature profiles obtained from pure rotational spectroscopic lidar signals. In future work, we aim to explore the potential of our multi-channel high-resolution spectrometric lidar to obtain vertically resolved chemical characterization of aerosols and trace gases.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.420070