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双相全息图和二进制振幅编码的比较:全息投影和波束生成

Tomoyoshi Shimobaba, Fan Wang, Joanna Starobrat

|October 19, 2023

概括

与传统技术相比,二进制振幅编码 (BAE) 为创建全息图提供了更快,更有效的方法. 这种新的方法实现了更高的光效率,具有可比的图像质量,用于全息投影和束生成.

科学领域:

光学和光子学在光学和光子学.
计算成像技术的成像

背景情况:

计算机生成全息图 (CGH) 为任意波生成提供高光效率.
将复杂的振幅编码到单相空间光调制器 (SLM) 是一个挑战,双相全息图 (DPH) 降低了效率.

研究的目的:

将二进制振幅编码 (BAE) 与复杂振幅全息编码的常规方法进行比较.
为了评估BAE在全息投影和束生成的真实性和光效率方面的表现.
为 BAE 全息图带有不同尺寸比率引入降噪技术.

主要方法:

将BAE与DPH,代算法和错误扩散方法进行比较.
评估指标包括光效和重现光波的真实性.
为BAE开发和测试一种降噪方法.

主要成果:

BAE实现了与DPH相似的图像质量,但光效率大约高出3倍.
BAE是非代的,使得全息图生成比代方法快2个数量级.
建议的降噪方法对不同尺寸比例的 BAE 全息图有效.

结论:

BAE在复杂的振幅编码中取得了重大进展,用于仅相位的SLMs.
BAE为全息应用提供了速度,光效和图像质量的卓越平衡.
降噪技术提高了BAE在各种各样的全息场景中的适用性.

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