Vector-apodizing phase plate coronagraph: design, current performance, and future development [Invited].
Vector-apodizing phase plate coronagraph: design, current performance, and future development [Invited].
复制标题
矢量变迹相位板日冕仪：设计、当前性能和未来发展[邀请]。
作者：
D. Doelman;F. Snik;E. Por;S. Bos;Gilles Otten;M. Kenworthy;S. Haffert;M. Wilby;Alexander J. Bohn;Ben J. Sutlieff;K. Miller;Mireille Ouellet;Jos de Boer;C. Keller;M. Escuti;Shuojia Shi;N. Warriner;Kathryn J. Hornburg;J. Birkby;J. Males;K. Morzinski;L. Close;J. Codona;Joseph Long;L. Schatz;J. Lumbres;A. Rodack;A. Hedglen;K. V. Gorkom;O. Guyon;J. Lozi;T. Groff;J. Chilcote;N. Jovanovic;Simon Thibault;C. D. Jonge;Guillaume Allain;Cédric Vallée;D. Patel;Olivier Cote;C. Marois;Phil Hinz;Jordan M. Stone;Andy Skemer;Zackery W. Briesemeister;A. Boehle;A. Glauser;William H. Taylor;P. Baudoz;E. Huby;O. Absil;B. Carlomagno;C. Delacroix
在过去的十年中，矢量变迹相位板 (vAPP) 日冕仪已从概念发展到在 8 m 级望远镜上的许多高对比度成像系统中的实际应用。 vAPP 是一种几何相位图案日冕仪，本质上是宽带的，其制造只能通过液晶图案的直写技术来实现。 vAPP 生成两个冠状点扩散函数 (PSF)，抵消 PSF 相对两侧的星光并具有相反的圆偏振态。效率，即这些PSF中的光量，取决于液晶延迟器半波的延迟偏移。使用不同的液晶配方来调节延迟，不同的 vAPP 在可见光和热红外（0.55 µm 至 5 µm）范围内以高效率 (${gt}96\%$) 运行。自2015年以来，七个vAPP已安装在总共六种不同的仪器中，包括Magellan/MagAO、Magellan/MagAO-X、Subaru/SCExAO和LBT/LMIRcam。使用安装在后两台仪器上的两台积分场摄谱仪，这些 vAPP 可以提供低分辨率光谱（${
m{R}} sim 30$) 介于 1 µm 和 5 µm 之间。我们审查所有委托 vAPP 的设计过程、开发、调试、上空性能和第一个科学成果。我们报告所吸取的经验教训，并展望未来的发展和应用。
Over the last decade, the vector-apodizing phase plate (vAPP) coronagraph has been developed from concept to on-sky application in many high-contrast imaging systems on 8 m class telescopes. The vAPP is a geometric-phase patterned coronagraph that is inherently broadband, and its manufacturing is enabled only by direct-write technology for liquid-crystal patterns. The vAPP generates two coronagraphic point spread functions (PSFs) that cancel starlight on opposite sides of the PSF and have opposite circular polarization states. The efficiency, that is, the amount of light in these PSFs, depends on the retardance offset from a half-wave of the liquid-crystal retarder. Using different liquid-crystal recipes to tune the retardance, different vAPPs operate with high efficiencies (${gt}96\%$) in the visible and thermal infrared (0.55 µm to 5 µm). Since 2015, seven vAPPs have been installed in a total of six different instruments, including Magellan/MagAO, Magellan/MagAO-X, Subaru/SCExAO, and LBT/LMIRcam. Using two integral field spectrographs installed on the latter two instruments, these vAPPs can provide low-resolution spectra (${
m{R}} sim 30$) between 1 µm and 5 µm. We review the design process, development, commissioning, on-sky performance, and first scientific results of all commissioned vAPPs. We report on the lessons learned and conclude with perspectives for future developments and applications.
影响因子：
1.9
作者：
Shihao Dong;T. Haist;W. Osten
通讯作者：
Shihao Dong;T. Haist;W. Osten