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CO2 Monitoring with a Field Deployable NIR Standoff Environmental Sensor

机译:使用可现场部署的近红外对峙环境传感器进行二氧化碳监测

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摘要

We report standoff open path atmospheric CO2 monitoring with a field deployable, turn key system including a continuous wave (CW) distributed feedback (DFB) laser and an erbium doped fiber amplifier (EDFA) at 1.5-μm. A sensitivity of 28-ppm was achieved over 1.5-km of open air with 200-pW of received power, a 10s acquisition time, and a peak absorption cross section of 8x10~(-23). This sensitivity corresponds to an error in fractional absorbance of 8x10~(-3). Closed cell lab sensitivities are better than 3000ppm*m, an error in fractional absorbance of 5x10~(-4). These results have been achieved using space qualified laser components, un-cooled InGaAs detectors, and off the shelf electronics in a rugged all fiber architecture.
机译:我们报告了采用现场可部署的交钥匙系统对开路大气CO2进行监测,该系统包括连续波(CW)分布式反馈(DFB)激光器和1.5μm的掺ped光纤放大器(EDFA)。在1.5公里的露天环境下,接收功率为200pW,采集时间为10s,吸收峰的横截面为8x10〜(-23),灵敏度为28-ppm。此灵敏度对应于8x10〜(-3)的分数吸光度误差。闭孔实验室灵敏度高于3000ppm * m,吸光度分数误差为5x10〜(-4)。使用坚固耐用的全光纤架构的空间合格的激光组件,未冷却的InGaAs检测器以及现成的电子设备,可以实现这些结果。

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