Work

Complex field modulation of incoherent white light with a spatial light modulator

Year: 2025

Type: article

Abstract: Holographic display and imaging are usually implemented with coherent lasers, which usually suffer from speckles. Incoherent light sources have long been highly desired for holographic applications, but the corresponding spatial modulation scheme is still lacking. Here we demonstrate a hyperspectral complex field modulation based on a single spatial light modulator (SLM) for an incoherent white light-emitting diode (LED) with a 200 nm bandwidth. The technique encodes the complex fields of multiple wavelengths into a phase hologram. The hologram has an analytical expression and is the superposition of multiple fringe patterns with different frequencies. By tuning the local fringe frequency on the hologram, one can modulate the local output spectrum. The method is applied for sweeping wavelength and projecting color images, where tens of spectral channels are modulated independently. Moreover, the method can achieve complex modulation and is applied in multi-plane holographic projections.

Source: Optics Express

DOI: 10.1364/oe.567158

Authors: Hengzhe Yan, Yijia Yu, Yuncong Sun, Ruixin Ma, Wenjie Wan

Institutions: Shanghai Jiao Tong University, University of Michigan

Language: English

Topic: Advanced Optical Imaging Technologies

Subfield: Media Technology

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Shanghai Technology Innovation Project, National Key Research and Development Program of China