Author

Liu-Rong Lin

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Review Open access Sep 2026

Active focal plane phase mask coronagraphy with a discrete pixelated device: I. Study of the theoretical performance trade space

Recent advances in high-contrast exoplanet imaging instrumentation have introduced the concept of adaptive coronagraphy. For example, liquid-crystal-on-silicon spatial light modulators (SLMs) can be used as programmable phase masks or digital micro-mirror devices as configurable pupil apodizers. Adaptive coronagraphy o...

Liu-Rong Lin, Axel Potier, Ruben Tandon et al. · Journal of Astronomical Tele... · 1 citation

Open access Aug 2026

The PLACID active coronagraphic imager instrument: commissioning status

The world’s first adaptive stellar coronagraph, the Programmable Liquid-crystal Active Coronagraphic Imager for the 4-m DAG telescope (PLACID) uses a spatial light modulator operating from H- to Ks-band to dynamically adjust the focal-plane phase mask entirely in software. Positioned between the TROIA XAO system and th...

Ruben Tandon, Lucas Marquis, Liu-Rong Lin et al. · Astronomical Telescopes + In... · 0 citations

Aug 2026

Sub-nanometer spatio-temporal phase metrology of LCOS SLMs: calibration efforts towards adaptive coronagraphy

Spatial Light Modulators (SLMs) are numerically programmable optical components that modulate the phase of light. We present digital holographic microscope (DHM) metrology results for the calibration of two classical liquid-crystal on-silicon (LCOS) VIS-633 nm SLMs: Meadowlark P1920 and Holoeye ERIS-NIR-153. For both d...

Lucas Marquis, Ruben Tandon, Liu-Rong Lin et al. · Astronomical Telescopes + In... · 0 citations