Ballüder K, Taghizadeh M R
Opt Lett. 1999 Dec 1;24(23):1756-8. doi: 10.1364/ol.24.001756.
Many applications of diffractive phase elements involve the calculation of a continuous phase profile that is subsequently quantized for fabrication. The quantization process maps the continuous range of phase values to a limited number of discrete steps. We report our observation of the influence of this quantization process on the performance of mode-selecting diffractive elements and show that the quantization process produces significantly better results by use of an optimized bias phase. In principle this process can be employed to a greater or lesser extent in any quantization process.
衍射相位元件的许多应用都涉及到连续相位分布的计算，该分布随后会被量化以便制造。量化过程将连续的相位值范围映射到有限数量的离散步长。我们报告了我们对这种量化过程对模式选择衍射元件性能影响的观察结果，并表明通过使用优化的偏置相位，量化过程能产生明显更好的结果。原则上，这个过程在任何量化过程中都可以或多或少地被采用。
