Optimization of the static volumetric 3D display system based on two-step two-frequency upconversion of Er3+-doped tellurite glass

We demonstrate a high-brightness, high-contrast static volumetric three-dimensional (3D) display based on the two-step, two-frequency upconversion by optimizing the incidence angle and the number of two-dimensional graphical slices of the digital micromirror device (DMD). A homemade cubic volume of...

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Bibliographic Details
Published in:Applied optics (2004) 2024-11, Vol.63 (31), p.8054
Main Authors: Li, Wencai, Ji, Kang, Zhao, Qiang, Deng, Yan, Miao, Gang, Han, Dongcheng, Chen, Biao
Format: Article
Language:English
Subjects:
Brightness
Display devices
Erbium
Galvanometers
Image contrast
Incidence angle
Optimization
Tellurium dioxide
Upconversion
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Summary:We demonstrate a high-brightness, high-contrast static volumetric three-dimensional (3D) display based on the two-step, two-frequency upconversion by optimizing the incidence angle and the number of two-dimensional graphical slices of the digital micromirror device (DMD). A homemade cubic volume of tellurite glass (22mm×22mm×22mm ) doped with 0.7% erbium ions (Er3+ ) is used as the display medium. The volumetric pixels (voxels) of 546 nm luminescence are activated by two lasers of 850 nm and 1550 nm, which are meticulously scanned by a DMD of 1280×800 resolution and a galvanometer scanner, respectively. The brightness and contrast of the resulting 3D imagery are investigated by adjusting the incidence angle of the DMD and optimizing the number of two-dimensional graphical slices. Experimentally, the optimal incidence angle of 55.76° and slices of 25 with nearly 26 million voxels are obtained. The resultant image display is remarkably steady, devoid of any flicker, while delivering exceptional luminance and contrast.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.534050