Development of a high spectral resolution lidar based on confocal Fabry-Perot spectral filters

David S. Hoffman, Kevin S. Repasky, John A Reagan, John L. Carlsten

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The high spectral resolution lidar (HSRL) instrument described in this paper utilizes the fundamental and second-harmonic output from an injection seeded Nd:YAG laser as the laser transmitter. The light scattered in the atmosphere is collected using a commercial Schmidt-Cassegrain telescope with the optical receiver train first splitting the fundamental and second-harmonic return signal with the fundament light monitored using an avalanche photodiode. The second-harmonic return signal is mode matched into a tunable confocal Fabry-Perot (CFP) interferometer with a free spectral range of 7.5 GHz and a finesse of 50.7 (312) at 532 nm (1064 nm) placed in the optical receiver for spectrally filtering the molecular and aerosol return signals. The light transmitted through the CFP is used to monitor the aerosol return signal while the light reflected from the CFP is used to monitor the molecular return signal. Data collected with the HSRL are presented and inversion results are comparedtoaco-located solar radiometer, demonstrating the successful operation of the instrument. The CFP-based filtering technique successfully employed by this HSRL instrument is easily portable to other arbitrary wavelengths, thus allowing for the future development of multiwavelength HSRL instruments.

Original languageEnglish (US)
Pages (from-to)6233-6244
Number of pages12
JournalApplied Optics
Volume51
Issue number25
DOIs
StatePublished - Sep 1 2012

Fingerprint

Spectral resolution
Optical radar
optical radar
spectral resolution
filters
Optical receivers
high resolution
Aerosols
harmonics
aerosols
Fabry-Perot interferometers
receivers
Avalanche photodiodes
Lasers
Radiometers
Telescopes
Transmitters
radiometers
avalanches
transmitters

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Development of a high spectral resolution lidar based on confocal Fabry-Perot spectral filters. / Hoffman, David S.; Repasky, Kevin S.; Reagan, John A; Carlsten, John L.

In: Applied Optics, Vol. 51, No. 25, 01.09.2012, p. 6233-6244.

Research output: Contribution to journalArticle

Hoffman, David S. ; Repasky, Kevin S. ; Reagan, John A ; Carlsten, John L. / Development of a high spectral resolution lidar based on confocal Fabry-Perot spectral filters. In: Applied Optics. 2012 ; Vol. 51, No. 25. pp. 6233-6244.
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