Abstract
We have developed a carbon dioxide () differential absorption lidar utilizing a quasi-phase-matching optical parametric oscillator (OPO) and a photon-counting detector. The operating wavelengths were chosen based on their low interference from water vapor and low temperature sensitivity. The online wavelength was in the () band of , which was insensitive to atmospheric temperature. The established OPO laser achieved a , repetition rate at the online and offline wavelengths. Our observations confirmed the statistical error of 2% with of accumulation for the density profile less than . Also, the statistical error of 1% at an altitude of was demonstrated. The results of the vertical concentrations acquired using a wavelength are presented.
© 2009 Optical Society of America
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