In electronic holography, a light source that can control coherence steplessly is desired to adjust the balance between speckle noise and the resolution of reconstructed images. We propose a high-brightness light source that can control speckle by adjusting the bandwidth. In general, narrowing the bandwidth of the light source results in a decrease in brightness. To compensate for this, the proposed system contains a yellow phosphor light source in the projector as a high-intensity light source. The results of experiments show that bandwidth of the proposed device can be adjusted as intended, and it is brighter than high brightness light emitting diode. Therefore, it is confirmed that the proposed device is useful as a reconstruction light source for electro-holography with evaluating the quality of reconstructed images.

中文翻译：

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投影仪中使用高亮度黄色荧光粉光源的电全息显示散斑控制

在电子全息术中，需要一种能够无级控制相干性的光源来调节散斑噪声和重建图像的分辨率之间的平衡。我们提出了一种高亮度光源，可以通过调整带宽来控制散斑。一般来说，缩小光源的带宽会导致亮度降低。为了弥补这一点，所提出的系统在投影仪中包含黄色磷光体光源作为高强度光源。实验结果表明，该器件的带宽可以按预期调节，并且比高亮度发光二极管更亮。因此，证实所提出的装置可用作电子全息术的重建光源并评估重建图像的质量。