Relative limitations of increasing the number of modulation levels in computer generated holography
Relative limitations of increasing the number of modulation levels in computer generated holography
复制标题
增加计算机生成全息术中调制级别数量的相对局限性
DOI：
10.1016/j.optcom.2020.125353
复制
发表时间：
2020
影响因子：
2.4
通讯作者：
Christopher P
中科院分区：
文献类型：
--
作者：
Christopher P
能够进行二进制和多级调制的相位和幅度空间光调制器（SLM）广泛使用，并为全息应用提供了多种技术可供选择。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。
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.