Dr. Qiang Sun Profile

Dr. Qiang Sun

at CIOMP

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Author

Publications (7)

SPIE Journal Paper | 23 August 2016

Diffraction analysis for digital micromirror device scene projectors in the long-wave infrared

Qing Han, Jian Wang, Jianzhong Zhang, Qiang Sun

OE, Vol. 55, Issue 08, 085105, (August 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.8.085105

KEYWORDS: Digital micromirror devices, Diffraction, Projection systems, Long wavelength infrared, Diffraction gratings, Micromirrors, Polarization, Infrared imaging, Infrared radiation, Magnetism

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SPIE Journal Paper | 30 November 2015

Topology optimization of support structure of multiwaveband imaging system

Xiaohu Li, Ming Xuan, Junlin Ma, Liming Zheng, Qiang Sun, He Wang

OE, Vol. 54, Issue 11, 115113, (November 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.11.115113

KEYWORDS: Ultraviolet radiation, Imaging systems, Optimization (mathematics), Reflectors, Near infrared, Visible radiation, Optical alignment, Prototyping, Optical engineering, UV optics

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Proceedings Article | 23 August 2013 Paper

Broadband infrared absorber based on plasmonic hybrid resonator

Qiuqun Liang, Dongliang Hao, Taisheng Wang, Zhenwu Lu, Qiang Sun, Weixing Yu

Proceedings Volume 8911, 89110L (2013) https://doi.org/10.1117/12.2034529

KEYWORDS: Plasmonics, Surface plasmons, Absorption, Metals, Dielectrics, Interfaces, Infrared radiation, Fabry–Perot interferometers, Resonators, Dielectric polarization

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Plasmonic resonances in metallic subwavelength structures have been widely exploited for a broad range of applications including nanoantennas, surface-enhanced Raman spectroscopy, chiral metamaterials, metamagnetism and absorbers. The phenomenon of extraordinary optical transmission (EOT) through subwavelength holes or slits based on the surface plasmon resonance is also extensively studied and has been applied for light harvesting. However, most of work about light harvesting devices suffer from many disadvantages such as narrow operating waveband, sensitive to the polarization state of the incident light, narrow accepting angles at a fixed azimuthal angle, which greatly limit their potential applications to spectroscopic detection and phase imaging. In this work, we present a broadband plasmonic resonant absorber in infrared regime. The plasmonic resonant absorber consists of a three-layer structure, i.e. two-dimensional metallic subwavelength hole arrays/dielectric-spacer/ thick metallic film from top to bottom. The designed plasmonic resonator is found to be polarization insensitive and omnidirectional due to the symmetry of the subwavelength hole array structure. The absorption efficiency of such absorber can be optimized by tuning the geometry of the metallic subwavelength structure and the thickness of the dielectric layer in between the two metallic films. The broadband efficient light absorbing property of the plasmonic resonant absorber can be explained by the synergetic effect of plasmonic resonance and Fabry-Perot (FP) resonance. It is shown that the periodic subwavelength metallic holes interact with the incident light to excite the surface plasmons so that the transmitted light intensity is significantly enhanced. The enhancement of the electric field near the metallic surface leads to an improved absorption. Moreover, FP cavity provides a resonant environment for the excited surface plasmons as well as the diffracted waves. As a result, the efficient light absorbing is achieved over a broad waveband. It should be noted that the proposed absorber can be applied to other working wavebands by carefully tuning the geometry of the metallic subwavelength structure and the thickness of the dielectric layer in between two metallic layers. The designed absorber may find important applications in solar cells, photodetectors, thermo-photovoltaic, and thermal emitters.

Proceedings Article | 5 September 2006 Paper

Compound telescope

Zhenwu Lu, Nan Zhang, Hua Liu, Fengyou Li, Qiang Sun

Proceedings Volume 6289, 628910 (2006) https://doi.org/10.1117/12.679255

KEYWORDS: Space telescopes, Telescopes, Objectives, Tolerancing, Image quality, Modulation transfer functions, Eye models, Optical instrument design, Astronomical imaging, Temperature metrology

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Proceedings Article | 20 January 2006 Paper

The information acquirement of hyperspectral detection system with harmonic diffractive element in infrared dual band

Qiang Sun, Hu Xu, Yuncui Zhang, Yingying Gao

Proceedings Volume 6027, 602740 (2006) https://doi.org/10.1117/12.668390

KEYWORDS: Infrared radiation, Zoom lenses, Infrared imaging, Imaging systems, Infrared detectors, Diffraction, Hyperspectral imaging, Infrared zoom, Modulation transfer functions, Beam splitters

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Proceedings Article | 20 January 2006 Paper

Study of Mie extinction efficiency

Guang-hui Dai, Zhi-bin Ren, Qiang Sun, Jian Liu

Proceedings Volume 6027, 602723 (2006) https://doi.org/10.1117/12.668195

KEYWORDS: Refractive index, Mie scattering, Optical spheres, Light scattering, Optical components, Sun, Computer science, Information science, Physics, Optoelectronics

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Proceedings Article | 10 January 2005 Paper

The geometric distortions correction of uncooled large-sized relative aperture infrared imaging system

Xintian Fan, Qiang Sun, Zhenwu Lu

Proceedings Volume 5640, (2005) https://doi.org/10.1117/12.576238

KEYWORDS: Infrared imaging, Imaging systems, Thermography, Infrared radiation, Image interpolation, Digital image processing, Geometrical optics, Mathematical modeling, Data acquisition boards, Fluctuations and noise

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Showing 5 of 7 publications

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