Journal
LIGHT-SCIENCE & APPLICATIONS
Volume 4, Issue -, Pages -Publisher
CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS
DOI: 10.1038/lsa.2015.32
Keywords
holography; nanoparticles; OASLM; ZnO
Categories
Funding
- EPSRC [EP/F00897X/1]
- Schiff Foundation
- Engineering and Physical Sciences Research Council [EP/F00897X/1] Funding Source: researchfish
- EPSRC [EP/F00897X/1] Funding Source: UKRI
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An optically addressed spatial light modulator (OASLM) can modulate the wavefront of a read light by displaying a phase pattern or a hologram configured by the intensity distribution of a write light. Using ZnO nanoparticles (NPs) as a novel photoconductor, a high-resolution OASLM was fabricated. A ZnO NP suspension was spin-coated on an indium tin oxide (ITO)-coated glass substrate and annealed to form a photosensitive layer. The device was characterized electrically and optically. The device was operated at low driving voltages in the transmission mode. Updatable recording of a diffraction grating up to 825 lp mm(-1) with a diffraction efficiency (DE) of 0.05% and binary holograms with pixel sizes from 2 mu m down to 0.72 mu m were demonstrated using a 405 nm wavelength write laser and a 635 nm wavelength read laser.
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