Dr. Xi Zhang Profile

Dr. Xi Zhang

at NIAOT

SPIE Involvement:

Author

Publications (15)

SPIE Journal Paper | 20 September 2016

Pupil-transformation multiconjugate adaptive optics for solar high-resolution imaging

Deqing Ren, Xi Zhang, Jiangpei Dou, Yongtian Zhu, Robert Broadfoot, Julius Chapman

OE, Vol. 55, Issue 09, 094103, (September 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.9.094103

KEYWORDS: Adaptive optics, Wavefronts, Telescopes, Imaging systems, Turbulence, Tomography, Wavefront sensors, Atmospheric turbulence, Wavefront reconstruction, Solar telescopes

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Proceedings Article | 6 August 2014 Paper

A coronagraph based on two spatial light modulators for active amplitude apodizing and phase corrections

Jiangpei Dou, Deqing Ren, Xi Zhang, Yongtian Zhu, Gang Zhao, Zhen Wu, Rui Chen, Chengchao Liu, Feng Yang, Chao Yang

Proceedings Volume 9147, 91478O (2014) https://doi.org/10.1117/12.2055327

KEYWORDS: Spatial light modulators, Coronagraphy, Point spread functions, Exoplanets, Imaging systems, Telescopes, Phase shift keying, Apodization, Calibration, Modulation

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Proceedings Article | 21 July 2014 Paper

The first portable solar and stellar adaptive optics

Deqing Ren, Rong Li, Xi Zhang, Jiangpei Dou, Yiangtian Zhu, Gang Zhao, Zhen Wu, Rui Chen, Chengchao Liu, Feng Yang, Chao Yang

Proceedings Volume 9148, 91482W (2014) https://doi.org/10.1117/12.2055349

KEYWORDS: Adaptive optics, Telescopes, Cameras, Point spread functions, Calibration, Exoplanets, Actuators, Near infrared, LabVIEW, Stars

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Proceedings Article | 24 September 2012 Paper

A demonstration test of the dual-beam polarimetry differential imaging system for the high-contrast observation

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xue Wang, Xi Zhang, Rong Li

Proceedings Volume 8446, 84461X (2012) https://doi.org/10.1117/12.924246

KEYWORDS: Imaging systems, Exoplanets, Polarimetry, Point spread functions, Coronagraphy, Polarization, Image processing, Liquid crystals, Wave plates, Speckle

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Proceedings Article | 24 September 2012 Paper

Laboratory test of a polarimetry imaging subtraction system for the high-contrast imaging

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xi Zhang, Rong Li

Proceedings Volume 8446, 84468D (2012) https://doi.org/10.1117/12.924245

KEYWORDS: Imaging systems, Distortion, Point spread functions, Exoplanets, Polarimetry, Speckle, Prisms, Coronagraphy, Image processing, Astronomy

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Proceedings Article | 21 September 2012 Paper

A dark-hole correction test for the step-transmission filter based coronagraphic system

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xi Zhang, Rong Li

Proceedings Volume 8442, 84420D (2012) https://doi.org/10.1117/12.924248

KEYWORDS: Coronagraphy, Point spread functions, Exoplanets, Optimization (mathematics), Actuators, Detection and tracking algorithms, Imaging systems, Distortion, Astronomy, Image filtering

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Proceedings Article | 13 September 2012 Paper

Recent progress on the portable solar adaptive optics

Deqing Ren, Xi Zhang, Matt Penn, Haimin Wang, Jiangpei Dou, Yongtian Zhu, Li Rong, Xue Wang

Proceedings Volume 8447, 84473K (2012) https://doi.org/10.1117/12.924447

KEYWORDS: Adaptive optics, Computing systems, Cameras, Solar telescopes, LabVIEW, Computer programming, Telescopes, Digital signal processing, Astronomy, Observatories

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Proceedings Article | 6 December 2011 Paper

A dual-channel imaging polarimetry system

Xue Wang, Deqing Ren, Jiangpei Dou, Yongtian Zhu, Xi Zhang

Proceedings Volume 8197, 81971I (2011) https://doi.org/10.1117/12.916664

KEYWORDS: Distortion, Imaging systems, Point spread functions, Polarimetry, Coronagraphy, Planets, Exoplanets, Prisms, Stars, Image segmentation

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Proceedings Article | 5 December 2011 Paper

Testing of a high-contrast imaging coronagraph based on an active liquid crystal array

Xi Zhang, Deqing Ren, Yongtian Zhu, Jiangpei Dou, Xue Wang

Proceedings Volume 8197, 81970M (2011) https://doi.org/10.1117/12.916666

KEYWORDS: Coronagraphy, Liquid crystals, Reflectivity, Optical components, Calibration, Planets, Point spread functions, Modulation, Phase shift keying, Polarizers

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Proceedings Article | 5 December 2011 Paper

Design and test of a high-contrast imaging coronagraph based on two 50-step transmission filters

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xi Zhang, Xue Wang

Proceedings Volume 8197, 81970F (2011) https://doi.org/10.1117/12.916663

KEYWORDS: Coronagraphy, Point spread functions, Image filtering, Exoplanets, Manufacturing, Optical filters, Calibration, Astronomy, Coating, Image transmission

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Proceedings Article | 29 July 2010 Paper

A portable solar adaptive optics system: software and laboratory developments

Deqing Ren, Matt Penn, Claude Plymate, Haimin Wang, Xi Zhang, Bing Dong, Nathan Brown, Andrew Denio

Proceedings Volume 7736, 77363P (2010) https://doi.org/10.1117/12.856224

KEYWORDS: Adaptive optics, LabVIEW, Telescopes, Computer programming, Digital signal processing, Cameras, Software development, Solar telescopes, Computing systems, Image processing

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Proceedings Article | 21 July 2010 Paper

Testing of a transmission-filter coronagraph for ground-based imaging of exoplanets

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xi Zhang, Xue Wang

Proceedings Volume 7735, 77358E (2010) https://doi.org/10.1117/12.855775

KEYWORDS: Coronagraphy, Exoplanets, Telescopes, Point spread functions, Manufacturing, Optical filters, Image filtering, Diffraction, Coating, Astronomy

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Proceedings Article | 18 September 2009 Paper

Wave-front sensing and correction for 4-meter LAMOST

Xi Zhang, Deqing Ren, Yongtian Zhu, Jiangpei Dou

Proceedings Volume 7439, 74390V (2009) https://doi.org/10.1117/12.825417

KEYWORDS: Mirrors, Telescopes, Calibration, Sensing systems, Active optics, Sensors, Actuators, Segmented mirrors, Wavefront sensors, Algorithm development

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Proceedings Article | 20 August 2009 Paper

Laboratory experiment of a high-contrast imaging coronagraph with new step-transmission filters

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xi Zhang

Proceedings Volume 7440, 744019 (2009) https://doi.org/10.1117/12.825253

KEYWORDS: Coronagraphy, Point spread functions, Image filtering, Manufacturing, Coating, Planets, Optics manufacturing, Optical filters, Chromium, Light scattering

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Proceedings Article | 12 July 2008 Paper

Laboratory experiment of a coronagraph based on step-transmission filters

Jiangpei Dou, Yongtian Zhu, Deqing Ren, Xi Zhang

Proceedings Volume 7010, 70104J (2008) https://doi.org/10.1117/12.785491

KEYWORDS: Coronagraphy, Point spread functions, Manufacturing, Image filtering, Coating, Optical filters, Planets, CCD cameras, Optics manufacturing, Optical aberrations

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Showing 5 of 15 publications

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