计算全息中增加调制级数的相对限制
Relative limitations of increasing the number of modulation levels in computer generated holography
摘要：
相位和振幅空间光调制器（SLM）能够二进制和多级调制广泛可用，并提供了广泛的技术选择全息应用。虽然重放领域产生的多层次的相位只有SLM是一个显着更高的质量比那些产生的等效的二进制相位只有SLM，证据是在这封信中，这种改善是不是为幅度SLM，其中多层次的设备提供了一个小的好处，他们的二进制同行。启发式和数值的理由，这是讨论和得出的结论。
英文摘要：
Phase and amplitude spatial light modulators (SLMs) capable of both binary and multi-level modulation are widely available and offer a wide range of technologies to choose from for holographic applications. While the replay fields generated with multi-level phase-only SLMs are of a significantly higher quality than those generated by equivalent binary phase-only SLMs, evidence is presented in this letter that this improvement is not as marked for amplitude SLMs, where multi-level devices offer only a small benefit over their binary counterparts. Heuristic and numerical justifications for this are discussed and conclusions drawn.
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