Progress on High Energy Optical Parametric Transmitter for Multiple Greenhouse Gases DIAL
Abstract
We report on a DIAL emitter for remote sensing of greenhouse gases, capable of addressing the three species of interest (CO 2 , CH 4 and H 2 O) for space applications with a single optical source. It is based on an amplified Nested Cavities Optical Parametric Oscillator (NesCOPO) around 2 µm. The source is single frequency over a wide range of tuneability between 2.05 – 2.3 µm, and shows a typical energy conversion efficiency of 20 % toward the signal wave. Spectral analysis shows a linewidth better than 100 MHz. These performances are measured in the vicinity of absorption lines of interest for space remote sensing of the three gases.
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