A high-resolution optically addressed spatial light modulator based on ZnO nanoparticles

Pawan Kumar Shrestha; Young Tea Chun; Daping Chu

doi:10.1038/lsa.2015.32

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A high-resolution optically addressed spatial light modulator based on ZnO nanoparticles

Original Articles

- A high-resolution optically addressed spatial light modulator based on ZnO nanoparticles
- Light: Science & Applications Vol. 4, Issue 2, (2015)
- Affiliations：
  
  University of Cambridge, Cambridge CB3 0FA, UK
- Author bio：
  
  DP Chu, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK E-mail: dpc31@cam.ac.uk
- Funds：
- DOI：10.1038/lsa.2015.32
  CLC：
- Published：2015-06，
  
  Published Online：19 December 2014，
  
  Received：01 October 2014，
  
  Revised：16 December 2014，
  
  Accepted：18 December 2014
- Accepted：
Scan QR Code
Shrestha, P. K., Chun, Y. T. & Chu, D. P. A high-resolution optically addressed spatial light modulator based on ZnO nanoparticles. Light: Science & Applications, 4, e259 (2015).
DOI：

Shrestha, P. K., Chun, Y. T. & Chu, D. P. A high-resolution optically addressed spatial light modulator based on ZnO nanoparticles. Light: Science & Applications, 4, e259 (2015). DOI： 10.1038/lsa.2015.32.

摘要

Abstract

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 µm down to 0.72 µm were demonstrated using a 405 nm wavelength write laser and a 635 nm wavelength read laser.

关键词

Keywords

holographynanoparticlesOASLMZnO

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