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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。
High-power quantum-well semiconductor lasers output linearly polarized light, whereas the Glan-Taylor prism has a birefringent property that separates two perpendicular light polarizations. If you use a Glan-Taylor prism in the opposite direction, you can couple light in both polarization directions. Using two semiconductor laser stacks with a center wavelength of 808 nm and an output power of 600 W, one stack of output light is rotated by 90 ° in the polarization direction after passing through the ½ wave plate, and the polarization direction of the other stack is maintained unchanged by a Glan-Taylor prism Polarization coupling after the synthesis of a beam. After the fast axis were aligned, focusing and slow axis eliminate the ball after the poor output, focusing lens f = 100 mm. At a current of 130 A The electro-optical conversion efficiency is about 43%. The focal spot was rectangular with 0.547 mm × 5.0 mm focal spot size, Kf = 26.1 mm · mrad in fast axis, and maximum output power of 1 kW with the UFF100 laser beam mass spectrometer. The laser system worked stably.