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Development and Testing of a Risk Reduction High Energy Laser Transmitter for High Spectral Resolution Lidar and Doppler Winds Lidar

机译：用于高光谱分辨率激光雷达和多普勒风激光雷达的降低风险的高能激光发射器的开发和测试

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Spaceborne 3-dimensional winds lidar and spaceborne High Spectral Resolution Lidar (HSRL) for aerosol and clouds are among the high priority future space missions recommended by the recent National Research Council (NRC) Decadal Review. They are expected to provide the important three dimensional winds data and aerosol data critically needed to improve climate models and numerical weather forecasting. HSRL and winds lidar have a common requirement for high energy solid-state lasers with output wavelengths at 1064nm, 532nm and 355nm, which can be achieved with Nd:YAG lasers and 2nd and 3rd harmonic generations. For direct detection winds lidar, only the 355nm output is needed. One of the key development needs is the demonstration of laser transmitter subsystem. Top issues include power and thermal management, lifetime, high energy UV operations, damage and contamination. Raytheon and its partner, Fibertek, have designed and built a space-qualifiable high energy Nd:YAG laser transmitter with funding from Raytheon Internal Research and Development (IR&D). It is intended to serve as a risk-reduction engineering unit and a test bed for the spaceborne HRSL and direct-detection Doppler winds Lidar missions. Close to 900 mJ/pulse at1064nm and a wall-plug efficiency of 6.5% have been achieved with our risk reduction laser. It is currently being characterized and tested at Raytheon Space and Airborne Systems. In this paper, we will discuss the design, build and testing results of this risk reduction high energy laser transmitter.
机译：最近，美国国家研究委员会（NRC）十年评估报告建议将星际3维风激光雷达和气溶胶和云的星载高光谱激光雷达（HSRL）列为高度优先的未来太空任务。他们有望提供重要的三维风数据和气溶胶数据，这些数据是改善气候模型和数值天气预报所必需的。 HSRL和风激光雷达对输出波长分别为1064nm，532nm和355nm的高能固态激光器有一个共同的要求，这可以通过Nd：YAG激光器以及第二和第三谐波产生。对于直接检测风雷达，仅需要355nm输出。关键的开发需求之一是激光发射器子系统的演示。首要问题包括电源和热管理，寿命，高能紫外线操作，损坏和污染。雷神公司及其合作伙伴Fiber火科技，在雷神内部研究与开发（IR＆D）的资助下，设计并制造了一款符合空间要求的高能Nd：YAG激光发射器。它旨在用作降低风险的工程单位和星载HRSL和直接探测多普勒测风激光雷达任务的试验台。使用我们的降低风险激光器，在1064nm处接近900 mJ /脉冲，壁塞效率为6.5％。目前，它正在雷神太空公司和机载系统中进行表征和测试。在本文中，我们将讨论这种降低风险的高能激光发射器的设计，构建和测试结果。

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