期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 24, 期 20, 页码 1830-1833出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2012.2215022
关键词
Infrared (IR) scene projector; optical data storage; optical devices; optical tuning; thermo-optical devices
资金
- National Science Foundation [ECCS-1139773]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1139773] Funding Source: National Science Foundation
This letter reports the use of programmed optical states in a vanadium dioxide (VO2) thin film for the projection of near infrared (NIR) images. The optical states are programmed by photothermal actuation from scanning a focused red laser on localized regions of the VO2 thin film. The abrupt change in transmissivity of NIR wavelengths across VO2's solid-to-solid phase change is used to reflect a diffused NIR beam in the regions scanned by the red laser. The transmitted NIR beam is projected on a laser beam profiler. The results of a single scan from the red laser show images with a high contrast between the two phases of the material.
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