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Prospect of YAG Laser Medium for Laser Space Solar Power System and Possible Application of Graded Structure for Efficient Cooling System

机译:YAG激光介质在激光空间太阳能系统中的应用前景及高效冷却系统的梯度结构应用

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摘要

Laser medium for solar-pumped solid laser of 10MW-1GW power is a key to realize Laser Space Solar Power System (L-SSPS). Since it is an ultrahigh power system operated in space, the laser medium must satisfy the conditions such as high efficiency, high power per weight or volume, excellent durability and maintainability, thermal equilibrium operation, and excellent long-range propagation of oscillated laser. YAG (Y_3Al_5O_(12)) ceramics doped doubly with Nd and Cr is considered to be a suitable laser medium for L-SSPS at present. There are the following important points for L-SSPS application: 1) Optimization of the doping amount, 2) Process, 3) Temperature control. Feasibility of YAG ceramics is discussed from a view point of material science and proposed a YAG ceramics structure with graded distribution of dopants.
机译:10MW-1GW功率太阳能泵浦固体激光器的激光介质是实现激光空间太阳能系统(L-SSPS)的关键。由于它是在太空中运行的超高功率系统,因此激光介质必须满足以下条件:高效率,每重量或体积的高功率,出色的耐久性和可维护性,热平衡运行以及振荡激光的出色远距离传播。目前,掺有Nd和Cr的YAG(Y_3Al_5O_(12))陶瓷被认为是适合L-SSPS的激光介质。 L-SSPS应用有以下重要要点:1)掺杂量的优化,2)工艺,3)温度控制。从材料科学的角度讨论了YAG陶瓷的可行性,并提出了一种YAG陶瓷结构,其中掺杂剂的分布呈梯度。

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