Pseudorandom encoding of complex-valued functions onto amplitude-coupled phase modulators
Pseudorandom encoding of complex-valued functions onto amplitude-coupled phase modulators
复制标题
DOI：
10.1364/josaa.15.000868
复制
发表时间：
1998-04
影响因子：
--
通讯作者：
R. Cohn
中科院分区：
文献类型：
--
作者：
R. Cohn
伪随机编码是一种用给定空间光调制器可实现的那些值来统计地近似期望复值的方法。伪随机编码最初是为纯相位调制器开发的，现在扩展到幅度是相位函数的调制器。这是通过变换相位统计以补偿幅度耦合来实现的。示例编码公式推导，评估，并与非补偿伪随机编码算法进行比较。补偿算法对复平面的较小区域进行编码，并且可以产生比任意伪随机算法可能产生的噪声更多的噪声。然而，编码公式大大简化了数值实现。
Pseudorandom encoding is a method of statistically approximating desired complex values with those values that are achievable with a given spatial light modulator. Originally developed for phase-only modulators, pseudorandom encoding is extended to modulators for which amplitude is a function of phase. This is accomplished by transforming the phase statistics to compensate for the amplitude coupling. Example encoding formulas are derived, evaluated, and compared with a noncompensating pseudorandom-encoding algorithm. Compensating algorithms encode a smaller area of the complex plane and can produce more noise than is possible for arbitrary pseudorandom algorithms. However, the encoding formulas have greatly simplified numerical implementations.