A narrowband infrared source based on orientation-patterned GaAs for standoff detection of chemicals.

Authors :: Armougom, J.
Melkonian, J.-M.
Dherbecourt, J.-B.
Raybaut, M.
Grisard, A.
Lallier, E.
Gérard, B.
Faure, B.
Souhaité, G.
Boulanger, B.
Godard, A.
Source :: Applied Physics B: Lasers & Optics. Jul2018, Vol. 124 Issue 7, p1-1. 1p. 1 Color Photograph, 5 Diagrams, 2 Charts, 14 Graphs.
Publication Year :: 2018
Abstract: This paper presents our work on a pulsed single-frequency tunable optical parametric oscillator based on orientation-patterned gallium arsenide. Owing to crystal temperature tuning, this source covers the 10.2-11.2 and 7.6-8.6 μm<inline-graphic></inline-graphic> ranges in single-longitudinal mode operation with a linewidth below 30 MHz. Standoff detection of ammonia around 10.35 and 10.5 μm<inline-graphic></inline-graphic> is performed by implementing this source in an Integrated Path Differential Absorption Lidar (IP-DIAL) setup. [ABSTRACT FROM AUTHOR]

Subjects :: *INFRARED sources
*ORIENTATION (Chemistry)
*GALLIUM arsenide
*CHEMICAL detectors
*OPTICAL parametric oscillators
*CRYSTAL structure

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