论文标题
带有液体晶体空间光调节剂的主动焦点冠状动脉术：可见的宽带对比度性能
Active focal-plane coronagraphy with liquid-crystal spatial-light modulators: Broadband contrast performance in the visible
论文作者
论文摘要
空间照明调制器（SLM）技术的技术进步使使用这些设备作为可编程的主动平面相冠状膜面罩成为可能，为新颖的多功能性和适应性高对比度成像观察策略打开了大门。但是，在应用宽带光的方法时，SLM诱导的相响应的标量性质是一个潜在的障碍，就像天文成像中的典型情况一样。我们首次使用两个商业上可用的SLM设备作为可见的策略（640 nm）的两个商业上可用的SLM设备，以宽带光（最高〜12pc带宽）提出实验室结果。结果表明，在理想或逼真的望远镜孔径条件下，对比度性能在该带宽方向上会忽略不计，达到了足够的水平，用于地面高对比度成像，这通常由大气残差主导。
The technological progress in spatial-light modulators (SLM) technology has made it possible to use those devices as programmable active focal-plane phase coronagraphic masks, opening the door to novel versatile and adaptive high-contrast imaging observation strategies. However, the scalar nature of the SLM-induced phase response is a potential hurdle when applying the approach to wideband light, as is typical in astronomical imaging. For the first time, we present laboratory results with broadband light (up to ~12pc bandwidth) for two commercially-available SLM devices used as active focal-plane phase masks in the visible regime (640 nm). It is shown that under ideal or realistic telescope aperture conditions, the contrast performance is negligibly affected in this bandwidth regime, reaching sufficient level for ground-based high-contrast imaging, which is typically dominated by atmospheric residuals.
