Masking and Demasking Agents
Phase Contrast and Differential Interference Contrast Microscopy
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Updated: Mar 31, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Xiaogang Wang1, Wen Chen2,3, Shengtao Mei3
1School of Sciences, Zhejiang A&F University, Linan 311300, China.
We developed a secure optical encryption method using two phase-only masks (POMs) and quick-response (QR) codes. This enables noise-free image retrieval and authentication without revealing sensitive information.
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