Jianlin Zhao

Independent Amplitude‐Phase Control in Liquid Crystal for Near‐Field Anti‐Counterfeiting and Far‐Field Holographic Encryption

ABSTRACT Liquid crystal (LC) optical devices provide a promising platform for optical encryption and anti‐counterfeiting applications. However, conventional design paradigms for LC light‐field modulation often involve coupled amplitude and phase responses, limiting design flexibi...

Upconversion edge imaging using single-beam second-harmonic generation

Near-infrared (NIR) imaging is essential for biological and materials sensing, yet high-performance NIR detectors are often cost-prohibitive and plagued by high dark current. Nonlinear frequency upconversion offers a compelling solution by shifting NIR signals into the visible sp...