Ballüder K, Taghizadeh M R
Opt Lett. 2001 Apr 1;26(7):417-9. doi: 10.1364/ol.26.000417.
Many applications of diffractive phase elements involve the calculation of a continuous phase profile, which is subsequently quantized for fabrication. The quantization process maps the continuous range of phase values to a limited number of discrete steps. We present a new scheme with unevenly spaced levels for the design of diffractive elements and apply it to the design of intracavity mode-selecting elements. We show that this modified quantization can produce significantly better results than are possible with a regular or even the bias-phase-optimized quantization scheme that we reported here earlier. In principle this process can be employed to a greater or lesser extent in any quantization process, allowing the fabrication of diffractive elements with much improved performance.
衍射相位元件的许多应用都涉及连续相位轮廓的计算，该轮廓随后会被量化以进行制造。量化过程将连续的相位值范围映射到有限数量的离散步骤。我们提出了一种用于衍射元件设计的具有不均匀间隔电平的新方案，并将其应用于腔内模式选择元件的设计。我们表明，这种改进的量化能够产生比我们之前在此报告的常规或甚至偏置相位优化量化方案更好得多的结果。原则上，这个过程在任何量化过程中都可以或多或少地采用，从而能够制造出性能有很大提高的衍射元件。
