School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
Opt Lett. 2011 Apr 15;36(8):1332-4. doi: 10.1364/OL.36.001332.
We describe the achromatization of Wollaston prisms to reduce the angular dispersion in the splitting angle. Analytical theory and ray-tracing modeling is presented. In an example application, a sixfold reduction in dispersion is achieved for wavelengths in the region 400 nm to 1.7 μm. Experimental proof of concept is demonstrated, and in an example application, the spectral dispersion of extended images recorded through cascaded Wollaston prisms is shown to be reduced by an order of magnitude.
我们描述了渥拉斯顿棱镜的消色差，以减少分光角中的角度色散。介绍了分析理论和光线追踪建模。在一个示例应用中，在 400nm 至 1.7μm 的波长范围内实现了六倍的色散减少。实验证明了概念的可行性，并且在一个示例应用中，通过级联渥拉斯顿棱镜记录的扩展图像的光谱色散被证明降低了一个数量级。
