Mr. Jianqing Cai Profile

Jianqing Cai

at Shanghai Astronomical Observatory CAS

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 13 December 2024 Paper

Development progress of a microspectrograph based on waveguide spectral lens

Chaoyan Wang, Jian Ge, Ziyang Zhang, Xinhong Jiang, Zhenming Ding, Shijie Ke, Lingxiao Li, Dan Zhou, Pengjun Zhang, Jiapeng Zhu, Jianqing Cai, Congcong Zhang, Yuanyuan Ding, Junyan Li

Proceedings Volume 13505, 1350503 (2024) https://doi.org/10.1117/12.3046661

KEYWORDS: Spectrographs, Waveguides, Astronomy, Prototyping, Dispersion, Telescopes, Optical components, Astronomical imaging

Read Abstract +

Spectrograph is one of the most important tools in astronomical observation and can be used in research areas ranging from cosmology to exoplanet research. Conventional astronomical spectrograph using a diffraction grating is huge, posing great challenges to their thermal and mechanical stability, and they are also very expensive. This inevitably determines the need for new original innovations in future optical and near-infrared spectrograph technologies. The application of photonics in astronomical spectrograph in recent years has shown a great potential for miniaturizing the spectrograph which is mounted on the large telescopes. The new dispersion element named waveguide spectral lens (WSL)is proposed by Westlake University that different from the independent optical element in the conventional spectrograph, and it can realize the dual functions of both wavelength separation and focus. This kind of chip technology makes the structure more compact, and improves the design to expand the devices working in the communication band to the visible and near-infrared band, enabling the spectrograph based on this new technology to achieve astronomical observation in the visible band in the future. In order to fully understand the performance of this new dispersion element and its application potential in astronomy, we established two chip test platforms in the optical laboratory of Shanghai Astronomical Observatory, and analyzed the dispersion capability of the device by using the wavelength calibration method. In order to expand the range of the spectra, the two-dimensional cross-dispersion spectrum was realized by adding a cylindrical lens and a blazed grating in the laboratory. The solar spectrum is also observed using these two chips. The experimental results show that this new optical waveguide chip can be applied to the visible light band, and can be used as the dispersion element of astronomical spectrograph for astronomical applications. At present, the optical and mechanical design of the prototype of the spectrograph has been completed. In the future, the laboratory installation of the prototype will be completed to realize the on-sky observation as soon as possible.

Proceedings Article | 11 September 2024 Poster + Paper

Realization of a kind of interferometric imaging telescope with four apertures

Congcong Zhang, Xinyang Chen, Lixin Zheng, Dan Zhou, Yuanyuan Ding, Chaoyan Wang, Massinissa Hadjara, Lurun Shen, Zhendong Chen, Jianqing Cai, Qi Wang, Nenghong Zhu

Proceedings Volume 13094, 130944G (2024) https://doi.org/10.1117/12.3017936

KEYWORDS: Telescopes, Error control coding, Optical interferometry, Astronomical interferometry, Stellar interferometry, Signal detection, Point spread functions, Modulation transfer functions, Mirrors, Astronomical imaging

Read Abstract +

Proceedings Article | 11 September 2024 Poster + Paper

Design and performance of a double focus optical telescope

Lixin Zheng, Congcong Zhang, Song Yao, Lurun Shen, Dan Zhou, Zhendong Chen, Wei Wang, Jianjun Cao, Guoping Chen, Yong Yu, Jie Zhu, Qing Lin, Jianqing Cai, Yuanyuan Ding, Zhimao Du

Proceedings Volume 13094, 130944F (2024) https://doi.org/10.1117/12.3017720

KEYWORDS: Mirrors, Deformation, Optical surfaces, Telescopes, Image quality, Stars, Design, Lenses, Optical telescopes, Deformable mirrors

Read Abstract +

Proceedings Article | 28 August 2024 Poster + Paper

Piston error detection and closed-loop control based on fringe contrast measurement applied to a kind of interferometric imaging telescope with four apertures

Yuanyuan Ding, Xinyang Chen, Congcong Zhang, Lixin Zheng, Chaoyan Wang, Dan Zhou, Lurun Shen, Qi Wang, Jianqing Cai, Zhendong Chen

Proceedings Volume 13095, 1309530 (2024) https://doi.org/10.1117/12.3019540

KEYWORDS: Telescopes, Interferometry, Astronomical interferometry, Control systems, Error control coding, Optical interferometry, Calibration, Astronomical telescopes, Computing systems, Error analysis

Read Abstract +

Proceedings Article | 23 August 2024 Presentation + Paper

Progress in the Earth 2.0 (ET) space mission

Jian Ge, Hui Zhang, Yongshuai Zhang, Yan Li, Dan Zhou, Haijiao Jiang, Pengjun Zhang, Xinyu Yao, Jiapeng Zhu, Yong Yu, Congcong Zhang, Zhenghong Tang, Jianqing Cai, Chaoyan Wang, Hongping Deng, Wen Chen, Kun Chen, Yingquan Yang, Xuliang Duan, Haoyu Wang, Jiangjiang Huang, Yang Gao, Yifei Wang, Lei Huang, Genjian Qin, Xinyu Liu, Yonghe Chen, Feng Dong, Yutian Fu, Baoyu Yang, Chuanxin Wei, Xianyi Zhou, Yanwu Kang, Lingfeng Huang, Boneng Xiong, Junfei Li, Zongxi Song, Wei Gao, Wei Li, Fengtao Wang, Pengfei Cheng, Chao Shen, Yue Pan, Jian Wang, Hongfei Zhang, Hui Wang, Qi Feng, Zhiyi Liu, Zhe Geng, Jie Gao, Qinghui Wu, Dapeng Jiang, Liangbi Su, Longxiang Li, Lin Wen, Yudong Li, Jie Feng, Lianguo Wang, Meng Bai, Haitao Li, Weicheng Zang, Hongjing Yang, Shude Mao, Wei Zhu, Sharon Xuesong Wang, Jilin Zhou, Jiwei Xie, Huigen Liu, Kevin Willis

Proceedings Volume 13092, 1309218 (2024) https://doi.org/10.1117/12.3018669

KEYWORDS: Planets, Telescopes, Stars, Satellites, Exoplanets, CMOS sensors, Space operations, Photometry, Cameras, Design

Read Abstract +

Proceedings Article | 6 August 2024 Presentation + Paper

An ultra-compact optical spectrograph utilizing waveguide spectral lenses

Jian Ge, Ziyang Zhang, Chaoyan Wang, Shijie Ke, Zhenming Ding, Pengjun Zhang, Xinhong Jiang, Dan Zhou, Jiapeng Zhu, Lingxiao Li, Changhui Rao, Congcong Zhang, Jianqing Cai, Yixin Zhang

Proceedings Volume 13096, 130961K (2024) https://doi.org/10.1117/12.3019608

KEYWORDS: Spectrographs, Spectrometers, Astronomy, Waveguides, Arrayed waveguide gratings, Adaptive optics, Telescopes, Spectral resolution, Astronomical imaging, Stars

Read Abstract +

Proceedings Article | 30 April 2024 Paper

Optical simulation analysis of a Fizeau-type Y-4 prototype

Chaoyan Wang, Xinyang Chen, Congcong Zhang, Lixin Zheng, Yuanyuan Ding, Dan Zhou, Jianqing Cai, Lurun Shen, Qi Wang

Proceedings Volume 13155, 1315504 (2024) https://doi.org/10.1117/12.3013141

Read Abstract +

Proceedings Article | 5 November 2020 Paper

Measurement of human eye aberrations using an optical simulator based on pyramid wavefront sensor

Chaoyan Wang, Xinyang Chen, Zheng Zheng, Zhaohui Bu, Jianqing Cai, Yuanyuan Ding, Bei Wang

Proceedings Volume 11566, 1156615 (2020) https://doi.org/10.1117/12.2580684

KEYWORDS: Eye, Modulation, Wavefront sensors, Monochromatic aberrations, Optical simulations, Wavefronts, Sensors, Prisms, Deformable mirrors

Read Abstract +

Proceedings Article | 10 October 2020 Paper

Measurement of interactive matrix and flat-surface calibration of OKO 109-channel deformable mirror using ZYGO-GPI interferometer

Xinyang Chen, Chaoyan Wang, Lixin Zheng, Jianqing Cai, Yuanyuan Ding

Proceedings Volume 11552, 115521Y (2020) https://doi.org/10.1117/12.2575904

KEYWORDS: Calibration, Deformable mirrors, Interferometers, Adaptive optics, Mirrors, Wavefronts, Actuators, Optical aberrations, Zernike polynomials, Wavefront aberrations

Read Abstract +

Showing 5 of 9 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years