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

doi:10.1117/12.916663

5 December 2011 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, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 81970F (2011) https://doi.org/10.1117/12.916663
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

We propose a high-contrast coronagraph based on the step transmission filters for the direct imaging of an Earth-like exoplanets. To demonstrate the performance of the coronagraph, two 50-step transmission filters were manufactured and several experiments have been performed. At present, the coronagraph can reach a high contrast around 10^-7 at an inner angular distance of ~2λ/D in the visible wavelength. Such a coronagraph should be installed on an off-axis space telescope which will be promising for the direct imaging of an Earth-like exoplanet in the future.

Citation Download Citation

Jiangpei Dou, Deqing Ren, Yongtian Zhu, Xi Zhang, and Xue Wang "Design and test of a high-contrast imaging coronagraph based on two 50-step transmission filters", Proc. SPIE 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 81970F (5 December 2011); https://doi.org/10.1117/12.916663

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