Yao Yanfeng, Wang Yonghong, Wang Zhuoyan, Li Junrui
Opt Lett. 2024 Sep 1;49(17):4907-4910. doi: 10.1364/OL.532319.
The possibility of utilizing a honeycomb-like modulation pattern in a spatial light modulator (SLM) for multi-directional synchronous digital shearography measurements has been investigated. Each modulation pixel in the honeycomb-like pattern modulates the shearing amount in different directions, thus avoiding the resolution loss associated with previous methods where a single pixel could only modulate a specific shearing direction. It was demonstrated that high-quality phase maps for different shearing directions can be simultaneously obtained with a single exposure.
研究了在空间光调制器（SLM）中利用蜂窝状调制图案进行多方向同步数字剪切散斑测量的可能性。蜂窝状图案中的每个调制像素在不同方向上调制剪切量，从而避免了与先前方法相关的分辨率损失，在先前方法中单个像素只能调制特定的剪切方向。结果表明，通过单次曝光可以同时获得不同剪切方向的高质量相位图。
