大功率量子阱半导体激光器输出为线偏振光，而格兰-泰勒棱镜具有双折射性质，能将两种偏振方向相互垂直的光区分开。如果将格兰-泰勒棱镜反方向使用，则能将两个偏振方向的光耦合输出。使用两个中心波长808 nm，输出功率600 W的半导体激光堆栈，一个堆栈的输出光经过1/2波片后偏振方向旋转90°，另一个堆栈偏振方向保持不变，经过格兰-泰勒棱镜做偏振耦合后合成一束。分别经过快慢轴准直、聚焦和慢轴消球差后输出，其中聚焦镜f=100 mm。在工作电流130 A时，电光转换效率约为43%。使用UFF100激光光束质量诊断仪测量，焦斑呈矩形分布，焦斑面积为0.547 mm×5.0 mm，快轴光参积Kf=26.1 mm·mrad，最大输出功率1 kW，激光器系统工作稳定。

Output laser beam of high power quantum well diode laser is linearly polarized, and Gran-Tayor prism can distinguish two laser beams in vertical polarizing direction by its characteristic of birefringence. If the input beams are in the opposite direction of the Gran-Tayor prism, they will be coupled into one beam. The experiment takes two 600 W diode laser stacks with 808 nm centre wavelength. The polarizing direction of one beam is changed by a 1/2 wave plate, the other is unchanged, and they are polarization coupled by the Gran-Tylor prism. The laser beam propagates through fast-axis or slow-axis collimating lens, focusing lens (f=100 mm) and slow-axis spherical aberration correcting lens. When the working current is 130 A, the electro optic efficiency is about 43%. Measured with the UFF100 laser beam diagnostics meter, the focal spot is rectangular, the area is 0.547 mm×5.0 mm, the fast-axis beam parameter product is 26.1 mm·mrad, and the highest output power is 1 kW. The laser system works stably.