Simple phase-only optical decryption with misalignment-free input
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Tien Viet Vu1, Nam Kim, Chang-Seup Nam
1Development of Information and Communication Engineering, Chungbuk National University, Cheongju 361-763, South Korea.
Optics Letters
|January 12, 2007
Abstract:
An improved optical decryption system based on kinogram encoding is proposed. The decrypted phase image is obtained by optically descrambling the encrypted image with the decrypting phase key. Only a single Fourier lens is needed to generate intensity patterns from the decrypted phase image. The design and simulation results have confirmed the proposed technique as a novel, simple, and robust decryption architecture.

