A Monte Carlo simulation for predicting photon return from sodium laser guide star

A Monte Carlo simulation for predicting photon return from sodium laser guide star
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预测钠激光导星光子返回的蒙特卡罗模拟

DOI:
10.1117/12.2205119
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发表时间:
2015-10
期刊:
Proc. SPIE 9678, AOPC 2015: Telescope and Space Optical Instrumentation
影响因子:
--
通讯作者:
冯麓
冯麓
中科院分区:
其他
文献类型:
--
作者:
冯麓

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钠激光导引星星是天文自适应光学系统校正大气湍流引起的波前像差的理想光源。然而,由于钠原子在大气中的物理特性,制造功率高于20 W的紧凑型高质量钠激光器的成本和困难并不能保证激光器将提供足够明亮的激光引导星星。在设计实际激光器之前,如果预测工具可以提供任意激光输出格式的光子产生性能的估计,则将是有帮助的。基于速率方程,我们开发了一个蒙特卡罗模拟软件,可以用来预测任意激光格式的钠激光制导星星产生性能。在本文中,我们将描述我们的模拟模型,其实施和目前的比较结果与现场测试数据。
Sodium laser guide star is an ideal source for astronomical adaptive optics system correcting wave-front aberration caused by atmospheric turbulence. However, the cost and difficulties to manufacture a compact high quality sodium laser with power higher than 20W is not a guarantee that the laser will provide a bright enough laser guide star due to the physics of sodium atom in the atmosphere. It would be helpful if a prediction tool could provide the estimation of photon generating performance for arbitrary laser output formats, before an actual laser were designed. Based on rate equation, we developed a Monte Carlo simulation software that could be used to predict sodium laser guide star generating performance for arbitrary laser formats. In this paper, we will describe the model of our simulation, its implementation and present comparison results with field test data.
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