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

Yoshikazu Shinohara; Katsuto Kisara; Hiroaki Suzuki

doi:10.4028/www.scientific.net/MSF.631-632.9

Paper Titles

Overview of Studies on Space Solar Power Systems and Elemental Technology Development
p.3

Prospect of YAG Laser Medium for Laser Space Solar Power System and Possible Application of Graded Structure for Efficient Cooling System
p.9

Dynamic, Modal and Wave Propagation Analyses of 3D Functionally Graded Continua
p.17

Thermal Stress Analysis of an FGM Cylinder under the Effect of Convection and Radially Varying Temperature Distribution
p.23

Approach to Optimum Layer Structure of Functionally Graded Materials
p.29

Computational Evaluation of Effective Conductivity of Particulate Composites with Imperfect Interfaces
p.35

Hypersonic Flutter Analysis of Functionally Graded Panels under Thermal and Aerodynamic Loads
p.41

HomeMaterials Science ForumMaterials Science Forum Vols. 631-632Prospect of YAG Laser Medium for Laser Space Solar...

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

Abstract:

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 (Y3Al5O12) 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.